21,501 results match your criteria Chemosphere[Journal]


Chlorinated paraffins (CPs) in salmon sold in southern Germany: Concentrations, homologue patterns and relation to other persistent organic pollutants.

Chemosphere 2019 Apr 8;227:630-637. Epub 2019 Apr 8.

University of Hohenheim, Institute of Food Chemistry (170b), 70599, Stuttgart, Germany.

Chlorinated paraffins (CPs) are complex mixtures of persistent contaminants present throughout the aquatic food web. In this study 122 farmed and 11 wild salmon samples were collected over the course of four years (2014-2017). The ratio of short-chain CP and medium-chain CP and the corresponding homologue patterns were determined by means of gas chromatography (GC) with high resolution, accurate mass Orbitrap mass spectrometry (MS) technology. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.016DOI Listing

Temporal trends and sediment-water partitioning of per- and polyfluoroalkyl substances (PFAS) in lake sediment.

Chemosphere 2019 Apr 11;227:624-629. Epub 2019 Apr 11.

Division of Water Resources Engineering, LTH Lund University, Lund, Sweden; Center for Middle Eastern Studies (CMES), Lund University, Lund, Sweden.

The use of per- and polyfluoroalkyl substances (PFAS) containing aqueous film forming foams (AFFF) at fire training facilities can have an adverse impact on the surrounding environment. The aim of the present study was to study the distribution and temporal trend of 26 PFAS in water and sediment cores for a lake and a pond affected by AFFF release from a fire training facility in Luleå, northern Sweden. In the aqueous phase, maximum ΣPFAS concentration was 1. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.074DOI Listing
April 2019
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Fractions and colloidal distribution of arsenic associated with iron oxide minerals in lead-zinc mine-contaminated soils: Comparison of tailings and smelter pollution.

Chemosphere 2019 Apr 6;227:614-623. Epub 2019 Apr 6.

Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, PR China.

The mining and smelting of lead-zinc (Pb-Zn) ores cause widespread As contamination. The fractions and colloidal distribution of As associated with Fe oxide minerals in Pb-Zn mine-contaminated soils have not been well understood. In this study, As fractions associated with Fe oxide minerals in Pb-Zn tailings- and smelter-contaminated soils were compared using sequential extraction techniques. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.030DOI Listing

Opportunities of electrokinetics for the remediation of mining sites in Biga peninsula, Turkey.

Chemosphere 2019 Apr 15;227:606-613. Epub 2019 Apr 15.

Department of Geological Engineering, Canakkale Onsekiz Mart University, Canakkale, Turkey.

This study investigated the geological conditions of Biga Peninsula. There are metamorphic rocks, ophiolitic melange, plutonic rocks, subvolcanics, volcanic rocks and volcanoclastics along with marine and terrestrial sediments in the region. This variety of rocks and the associated minerals resulted in many interesting metallic ores and coal for commercial exploitation. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.059DOI Listing

Carbonic anhydrase activity as a potential biomarker for acute exposure to copper in corals.

Chemosphere 2019 Apr 15;227:598-605. Epub 2019 Apr 15.

Instituto Coral Vivo, Rua dos Coqueiros, Parque Yaya, Santa Cruz Cabrália, BA, 45807-000, Brazil; Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Av. Itália, Km 8, Rio Grande, RS, 96203-900, Brazil. Electronic address:

Coral reefs are subjected to climate change and are severely impacted by human activities, with copper (Cu) being a relevant physiological stressor for corals at local scale. The ecological relevance of parameters measured at biochemical or cellular level is now considered an extremely important feature in environmental studies, and can be used as early warning signs of environmental degradation. In this context, the effects of acute exposure (96 h) to Cu were assessed on the maximum photochemical efficiency of zooxanthellae (Fv/Fm) and on the activity of key enzymes [carbonic anhydrase (CA) and Ca-ATPase] involved in coral physiology using the scleractinian coral Mussismilia harttii as a biological model. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.089DOI Listing
April 2019
1 Read

Degradation of bisphenol a using peroxymonosulfate activated by WO@MoS/Ag hollow nanotubes photocatalyst.

Chemosphere 2019 Apr 16;227:589-597. Epub 2019 Apr 16.

Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Rd, Changchun, 130102, China. Electronic address:

WO@MoS/Ag (HW@MA) hollow tubes were successfully engineered to photodegrade bisphenol A (BPA) combined with peroxymonosulfate (PMS) for the first time. XRD, XPS, TEM and SEM were conducted. The HW@MA tubes present excellent photocatalytic performance on the removal of BPA. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.067DOI Listing
April 2019
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Life-time exposure to waterborne copper III: Effects on the energy metabolism of the killifish Poecilia vivipara.

Chemosphere 2019 Apr 12;227:580-588. Epub 2019 Apr 12.

Programa de Pós-graduação Em Ciências Fisiológicas, Universidade Federal Do Rio Grande, Avenida Itália Km 8, Campus Carreiros, 96203-900, Rio Grande, RS, Brazil; Instituto de Ciências Biológicas, Universidade Federal Do Rio Grande, Avenida Itália Km 8, Campus Carreiros, 96203-900, Rio Grande, RS, Brazil. Electronic address:

Copper ions (Cu) are essential to life maintenance, nonetheless, elevated concentrations can be hazardous. Acute and sub-chronic toxic effects of this metal are well known and are usually related to enzymatic inhibition, elevated ROS production and dysfunction of energy metabolism. Despite that, chronic studies are extremely rare. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.080DOI Listing

Metal tolerant bacteria enhanced phytoextraction of lead by two accumulator ornamental species.

Chemosphere 2019 Apr 13;227:561-569. Epub 2019 Apr 13.

Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology, Islamabad, Pakistan. Electronic address:

Microbially enhanced availability and phytoextraction is a promising technique for phytoremediation of lead (Pb). In this study, Pb resistant strains were isolated and investigated for potential effects on plant growth and Pb phytoextraction. Incubation experiments were carried for inoculated and un-inoculated soil containing different levels of Pb. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.093DOI Listing

Joint toxic effects of cadmium and four pesticides on the earthworm (Eisenia fetida).

Chemosphere 2019 Apr 13;227:489-495. Epub 2019 Apr 13.

State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control / Key Laboratory for Pesticide Residue Detection of Ministry of Agriculture / Laboratory (Hangzhou) for Risk Assessment of Agricultural Products of Ministry of Agriculture, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, Zhejiang, China.

The contaminants, instead of single contaminants, are usually found as chemical mixtures in terrestrial environment. However, little information is now available about the joint effects of heavy metals and farm chemicals on the soil organism. Our current study aimed to assess the combined toxicity of cadmium (Cd) and four pesticides (atrazine, chlorpyrifos, lambda-cyhalothrin and abamectin) to the earthworm (Eisenia fetida) with binary, ternary, quaternary and quinquenary mixtures. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.064DOI Listing
April 2019
2 Reads

Combining bulk characterization and benzene polycarboxylic acid molecular markers to describe biochar properties.

Chemosphere 2019 Apr 10;227:381-388. Epub 2019 Apr 10.

Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, 650500, China; Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China.

The physicochemical properties of biochar determined its sorption of organic contaminations, and the environmental aging process changed the biochar properties. However, the correlation between biochar heterogeneous properties and their sorption characteristics is unclear. In this study, peanut shell biochars were produced at 200-700 °C, and HNO/HSO was used to oxidize 400 °C biochar for 2-10 h to simulate the enhanced aging process of biochar in the environment. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.03.164DOI Listing

Oxidative stress and genotoxic effects in earthworms induced by five imidazolium bromide ionic liquids with different alkyl chains.

Chemosphere 2019 Apr 13;227:570-579. Epub 2019 Apr 13.

College of Resources and Environment, Shandong Agricultural University, Key Laboratory of Agricultural Environment in Universities of Shandong, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, 61 Daizong Road, Taian, 271018, China. Electronic address:

In this study, the acute and subchronic toxicity of 1-alkyl-3-methyl imidazole bromide ionic liquids (ILs) [Cmim]Br (n = 2, 4, 6, 10, 12) was evaluated utilizing earthworms (Eisenia fetida) as a basis for their impact on terrestrial ecosystems. The filter paper tests and artificial soil tests were conducted as acute toxicity tests to investigate the LC of ILs, while in subchronic toxicity tests, earthworms were exposed to ILs in artificial soil (5, 10, 20 and 40 mg kg) for 28 d. Reactive oxygen species (ROS), antioxidant enzymes, detoxifying enzymes and oxidative damage were measured to determine subchronic effects of ILs on E. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.091DOI Listing
April 2019
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3D light-sheet assay assessing novel valproate-associated cardiotoxicity and folic acid relief in zebrafish embryogenesis.

Chemosphere 2019 Apr 11;227:551-560. Epub 2019 Apr 11.

Division of Biomedical Convergence, College of Biomedical Science, Kangwon National University, Chuncheon, South Korea. Electronic address:

Precise in vivo toxicological assays to determine the cardiotoxicity of pharmaceuticals and their waste products are essential in order to evaluate their risks to humans and the environment following industrial release. In the present study, we aimed to develop the sensitive imaging-based cardiotoxicity assay and combined 3D light-sheet microscopy with a zebrafish model to identify hidden cardiovascular anomalies induced by valproic acid (VPA) exposure. The zebrafish model is advantageous for this assessment because its embryos remain transparent. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.061DOI Listing
April 2019
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Mechanism of isoniazid-induced hepatotoxicity in zebrafish larvae: Activation of ROS-mediated ERS, apoptosis and the Nrf2 pathway.

Chemosphere 2019 Apr 6;227:541-550. Epub 2019 Apr 6.

Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, Key Laboratory for Biosensor of Shandong Province, Jinan, Shandong Province, PR China. Electronic address:

Isoniazid (INH) is a first-line anti-tuberculosis drug. INH has been detected in surface waters which may create a risk to aquatic organisms. In this study, the hepatotoxicity of INH was elucidated using zebrafish. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535193067
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http://dx.doi.org/10.1016/j.chemosphere.2019.04.026DOI Listing
April 2019
5 Reads

Statistical optimization of glyphosate adsorption by biochar and activated carbon with response surface methodology.

Chemosphere 2019 Apr 11;227:533-540. Epub 2019 Apr 11.

Environmental Bio-innovations Group (EBiG), School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore. Electronic address:

The introduction of glyphosate, found in herbicides, to waterbodies is of concern due to its toxicity and hence potential threat to public health and ecological systems. The present study has compared glyphosate removal from aqueous solution with activated carbon and biochar. Box-Behnken design, and percent contribution with Pareto analysis techniques were used in surface response and efficiency calculations modelled the process conditions and their effects. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.078DOI Listing

Rare earth elements regulate the endocytosis and DNA methylation in root cells of Arabidopsis thaliana.

Chemosphere 2019 Apr 11;227:522-532. Epub 2019 Apr 11.

National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China. Electronic address:

With increasing application of rare earth elements (REEs), the resulting environmental safety has attracted extensive attention. When REEs act on plant leaves, REEs can initiate endocytosis in leaf cells, causing more REEs enter plant cells and then severe damage to plants. But when REEs directly act on plant roots, whether and how REEs affect the endocytosis in root cells remain unknown. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.076DOI Listing
April 2019
2 Reads

Bioelectrochemical assisted dechlorination of tetrachloroethylene and 1,2-dichloroethane by acclimation of anaerobic sludge.

Chemosphere 2019 Apr 12;227:514-521. Epub 2019 Apr 12.

State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China; Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.

Volatile chlorinated hydrocarbons (VCHs) are often found as a type of persistent and ubiquitous contaminant in groundwater. The feasibility, characteristics and microbial mechanism of acclimation of biodiversity-rich inoculation source for bioelectrochemical stimulated VCH dechlorination remain poorly understood. Here, the superior bioelectrochemical catalytic activities were observed for tetrachloroethylene (0. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.066DOI Listing

Effect of reduced graphene oxide doping on photocatalytic reduction of Cr(VI) and photocatalytic oxidation of tetracycline by ZnAlTi layered double oxides under visible light.

Chemosphere 2019 Apr 13;227:505-513. Epub 2019 Apr 13.

College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China.

The existence of Cr(VI) and antibiotics in the environment can form the joint contaminant which can be hazardous to the ecosystem. To deal with this, we have explored a plausible method to remove the Cr(VI) and tetracycline (TC) from water by visible light photocatalysis. In this study, a series of reduced graphene oxide@ZnAlTi layered double oxides (rGO@LDO) composites with different doping ratio of rGO were successfully synthesized, which were applied in photocatalytic reduction of Cr(VI) and oxidation of TC. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.086DOI Listing

Specific metabolism related to sulfonamide tolerance and uptake in wetland plants.

Chemosphere 2019 Apr 10;227:496-504. Epub 2019 Apr 10.

Research Center of Hydrobiology, Jinan University, Guangzhou, 510632, PR China; Research Centre of Tropic and Subtropic Aquatic Ecological Engineering, Ministry of Education, Guangzhou, 510632, PR China.

Wetland plants are proven to perform well in water treatment. However, the phytoremediation capability of wetland plants for antibiotics, especially the uptake and metabolism involved in vivo, is poorly understood. In this study, we investigated the removal, uptake, and specific metabolism by Canna indica and Iris pseudacorus of five sulfonamides (SAs) using hydroponic experiments for seven days. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.069DOI Listing

QSAR modelling for predicting the toxic effects of traditional and derived biomass solvents on a Danio rerio biomodel.

Chemosphere 2019 Apr 10;227:480-488. Epub 2019 Apr 10.

Universidad San Jorge, Campus Universitario, Autov A23 Km 299, 50830, Villanueva de Gállego, Zaragoza, Spain. Electronic address:

The increasing interest in the development of ecofriendly solvents has led to the synthesis of benign alternative chemicals with minimized environmental impacts. These kinds of chemicals are known as Green solvents. In this work, we selected three families of solvents (furfural, lactate and levulinate families) derived from biomass that are structurally related. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.054DOI Listing

Determination of 20 perfluoroalkyl substances in greenhouse vegetables with a modified one-step pretreatment approach coupled with ultra performance liquid chromatography tandem mass spectrometry(UPLC-MS-MS).

Chemosphere 2019 Apr 9;227:470-479. Epub 2019 Apr 9.

College of Food Science and Engineering, Shandong Agricultural University, Tai'an, 271001, PR China. Electronic address:

A new rapid modified one-step QuEChERS (quick, easy, cheap, effective, rugged, and safe) approach was developed for the simultaneous determination of 20 perfluoroalkyl substances (PFASs) from samples of cucumber, lettuce, eggplant, tomato, and leek. Several parameters were optimized. Similar pretreatment approaches were employed for comparison; the results verified the satisfactory performance of this new method. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.034DOI Listing

The variation of metal fractions and potential environmental risk in phytoremediating multiple metal polluted soils using Noccaea caerulescens assisted by LED lights.

Chemosphere 2019 Apr 12;227:462-469. Epub 2019 Apr 12.

The University of Melbourne, VIC 3010, Victoria, Australia.

Different light combinations can improve phytoremediation efficiency by increasing the biomass yield and metal concentrations of plants. However, there has been rare research of using hyperaccumulators to change metal fractions and its possible leaching risk during phytoremediation. It was investigated in this study the impacts of different intensities of blue and red light mixed on the biomass production and metal uptake of Noccaea caerulescens and the changes of water soluble and exchangeable metal fractions in soil. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.083DOI Listing

Facile synthesis of manganese oxide-embedded mesoporous carbons and their adsorbability towards methylene blue.

Chemosphere 2019 Apr 11;227:455-461. Epub 2019 Apr 11.

NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, Ward 13, District 4, Ho Chi Minh City, 700000, Viet Nam. Electronic address:

Herein, a facile strategy to fabricate the novel manganese oxide-imprinted mesoporous carbons (MOPCx, x presents for pyrolysis temperature) was described via the direct pyrolysis of Mn(BDC)(DMF) (BDC = 1,4-benzenedicarboxylate, DMF = N,N-dimethylformamide) as a self-sacrificed template at various temperatures (x = 550, 750, and 950 C). The characterization results demonstrated the existence of MnO embedded in carbon structures with different morphologies, and enhancing surface areas (249.86-294. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.079DOI Listing
April 2019
2 Reads

The forgotten role of toxicodynamics: How habitat quality alters the mite, Oppia nitens, susceptibility to zinc, independent of toxicokinetics.

Chemosphere 2019 Apr 13;227:444-454. Epub 2019 Apr 13.

Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada, S7N 5B3; Department of Soil Science, University of Saskatchewan, Saskatoon, SK, Canada, S7N 5A8.

Soil habitat quality is thought to influence metal toxicity via changes in speciation and thereby toxicokinetics. Here, we assessed the toxicokinetic and toxicodynamic effects of habitat quality on mite, Oppia nitens when exposed to zinc (Zn) contaminated soils. Forty-seven soils were ranked into three habitat qualities; high, medium, and low based on biological reproduction of Folsomia candida, Enchytraeus crypticus, and Elymus lanceolatus. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.090DOI Listing
April 2019
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Calibration of polydimethylsiloxane and polyurethane foam passive air samplers for measuring semi volatile organic compounds using a novel exposure chamber design.

Chemosphere 2019 Apr 8;227:435-443. Epub 2019 Apr 8.

Department of Physical and Environmental Science, University of Toronto Scarborough, 1265 Military Trail Toronto, Ontario, M1C 1A4, Canada; Department of Earth Sciences, 22 Russell Street, University of Toronto, Toronto, Ontario, M5S 3B1, Canada.

Passive air sampling is increasingly used for air quality monitoring and for personal sampling. In a novel experimental exposure chamber study, 3 types of polydimethylsiloxane (PDMS, including sheet and wristband) and 1 type of polyurethane foam (PUF) passive air samplers were tested for gas-phase uptake of 200 semi volatile organic compounds (SVOCs) during six months. For 155 SVOCs including PAH, PCB, phthalates, organophosphate esters, musk compounds, organochlorine- and other pesticides, a normalized generic uptake rate (Rs) of 7. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535193069
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http://dx.doi.org/10.1016/j.chemosphere.2019.04.043DOI Listing
April 2019
2 Reads

Gut microbiota: An underestimated and unintended recipient for pesticide-induced toxicity.

Chemosphere 2019 Apr 13;227:425-434. Epub 2019 Apr 13.

College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China. Electronic address:

Pesticide pollution residues have become increasingly common health hazards over the last several decades because of the wide use of pesticides. The gastrointestinal tract is the first physical and biological barrier to contaminated food and is therefore the first exposure site. Interestingly, a number of studies have shown that the gut microbiota plays a key role in the toxicity of pesticides and has a profound relationship with environmental animal and human health. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.088DOI Listing
April 2019
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Metabolic mechanisms and acetylcholinesterase sensitivity involved in tolerance to chlorpyrifos-ethyl in the earwig Forficula auricularia.

Chemosphere 2019 Apr 11;227:416-424. Epub 2019 Apr 11.

Avignon University, Aix Marseille Univ, CNRS, IRD, IMBE, Pôle Agrosciences, 301 rue Baruch de Spinoza, BP 21239, 84916, Avignon, France.

Apple orchards are highly treated crops, in which organophosphorus (OP) are among the most heavily sprayed insecticides. These pesticides are toxic to non-target arthropods and their repeated use increases the risk of resistance. We studied mechanisms involved in tolerance and resistance to OP insecticides in the earwig Forficula auricularia, an effective generalist predator in pomefruit orchards. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.065DOI Listing

Polyurethane heat preservation materials: The significant sources of organophosphorus flame retardants.

Chemosphere 2019 Apr 12;227:409-415. Epub 2019 Apr 12.

Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.

The concentrations and compositions of organophosphorus flame retardants (OPFRs) in various heat preservation materials from different brands and types in China were investigated, as well as their OPFR burdens and emission amounts. The average concentrations of ΣOPFRs were 41.4 ± 10. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.085DOI Listing
April 2019
3 Reads

Wet scrubber coupled with heterogeneous UV/Fenton for enhanced VOCs oxidation over Fe/ZSM-5 catalyst.

Chemosphere 2019 Mar 29;227:401-408. Epub 2019 Mar 29.

Department of Mechanical Engineering, The University of Hong Kong, Hong Kong.

The traditional treatment processes for volatile organic compounds (VOCs) removal generally suffered several disadvantages, such as secondary air-pollutants. To overcome these issues, wet scrubber coupled with heterogeneous UV/Fenton was developed for gaseous VOCs (i.e. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.03.160DOI Listing
March 2019
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PCB52 induces hepatotoxicity in male offspring through aggravating loss of clearance capacity and activating the apoptosis: Sex-biased effects on rats.

Chemosphere 2019 Apr 12;227:389-400. Epub 2019 Apr 12.

Department of Forensic Pathology, School of Forensic Medicine, Southern Medical University, No. 1838 North Guangzhou Road, 510515, Guangzhou, China. Electronic address:

Polychlorinated biphenyls (PCBs), a kind of persistent organic pollutant, can induce hepatotoxicity in mammals. However, PCB-induced hepatotoxicity in offspring and the underlying mechanisms have been rarely studied. In the present study, Wistar rats were administered with corn oil or PCB52 (1 mg/kg body weight/day, by gavage) from gestational day 7 to postnatal day 21. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.077DOI Listing
April 2019
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Evaluation of the genotoxicity of neurotoxic insecticides using the micronucleus test in Tradescantia pallida.

Chemosphere 2019 Apr 12;227:371-380. Epub 2019 Apr 12.

Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil.

Neonicotinoids and phenylpyrazoles are classes of neurotoxic insecticides which are able to bind at different ligand sites of neural receptors, leading to the deregulation of insect neural activity and hence resulting in death. The misuse or indiscriminate use of these chemicals is directly associated with several toxicological effects in biota and at different trophic levels. Based on this premise, the aim of the present study was to evaluate and compare the genotoxic capacity of different concentrations of thiamethoxam (TMX), acetamiprid (ACP), imidacloprid (IMI) and fipronil (FP) through the Micronucleus Test in Tradescantia pallida (Trad-MCN). Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.073DOI Listing
April 2019
1 Read

The choreography of chemicals in nature; beyond ecotoxicological limits.

Authors:
Martina G Vijver

Chemosphere 2019 Apr 10;227:366-370. Epub 2019 Apr 10.

Leiden Universiteit, Institute for Environmental Sciences, PO Box 9518, 2300, RA Leiden, the Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.068DOI Listing

A review on biochar modulated soil condition improvements and nutrient dynamics concerning crop yields: Pathways to climate change mitigation and global food security.

Chemosphere 2019 Mar 29;227:345-365. Epub 2019 Mar 29.

Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.

The beneficial role of biochar on improvement of soil quality, C sequestration, and enhancing crop yield is widely reported. As such there is not much consolidated information available linking biochar modulated soil condition improvement and soil nutrient availability on crop yields. The present review paper addresses the above issues by compilation of world literature on biochar and a new dimension is introduced in this review by performing a meta-analysis of published data by using multivariate statistical analysis. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.03.170DOI Listing
March 2019
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Combined effects of environmental xeno-estrogens within multi-component mixtures: Comparison of in vitro human- and zebrafish-based estrogenicity bioassays.

Chemosphere 2019 Apr 9;227:334-344. Epub 2019 Apr 9.

Institut National de l'Environnement Industriel et des risques (INERIS), Unité Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550, Verneuil-en-Halatte, France. Electronic address:

Some recent studies showed that in vitro bioassays based on fish or human estrogen receptor (ER) activation may have distinct responses to environmental samples, highlighting the need to better understand bioassay-specific ER response to environmental mixtures. For this purpose, we investigated a 12-compound mixture in two mixture ratios (M1 and M2) on zebrafish (zf) liver cells stably expressing zfERα (ZELHα cells) or zfERβ2 (ZELHβ2 cells) and on human ER-reporter gene (MELN) cells. The mixture included the well-known ER ligands bisphenol A (BPA) and genistein (GEN), and other compounds representatives of a freshwater background contamination. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.060DOI Listing

Degradation of brominated polymeric flame retardants and effects of generated decomposition products.

Chemosphere 2019 Apr 8;227:329-333. Epub 2019 Apr 8.

Aquatic Ecology and Centre for Water and Environmental Research (ZWU), University Duisburg-Essen, 45141, Essen, Germany.

Brominated flame retardants are often associated with adverse environmental effects. Nevertheless, these chemicals are required in order to comply with fire safety standards. Therefore, a better environmental profile is desirable. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.052DOI Listing
April 2019
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Association between methylation of DNA damage response-related genes and DNA damage in hepatocytes of rats following subchronic exposure to vinyl chloride.

Chemosphere 2019 Apr 9;227:323-328. Epub 2019 Apr 9.

Department of Statistics, School of Public Health, Shanxi Medical University, Taiyuan, China.

In the present study, we investigated the association between methylation of DNA damage response-related genes such as cyclin-dependent kinase inhibitor (CDKN)2A, Ras association (RalGDS/AF-6) domain family member (RASSF)1A, O6-methylguanine DNA methyltransferase (MGMT), Kirsten rat sarcoma viral oncogene homolog (KRAS), and spleen-associated tyrosine kinase (SYK) and DNA damage in hepatocytes of rats following subchronic exposure to vinyl chloride (VC). Sixty-four healthy rats were randomly divided into three VC exposure groups (5, 25, and 125 mg/kg) and an untreated negative control group (n = 16 each). VC was administered by intraperitoneal injection every other day for a total of three times a week. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.058DOI Listing

Use of Pistia stratiotes for phytoremediation of water resources contaminated by clomazone.

Chemosphere 2019 Apr 5;227:299-304. Epub 2019 Apr 5.

Laboratório de Estudos Físico-Químicos e de Produtos Naturais (LEFQPN), Campus Uruguaiana, Universidade Federal do Pampa, CEP 97508-000, Uruguaiana, RS, Brazil. Electronic address:

The Pistia stratiotes L. was tested for phytoremediation potential of the compound clomazone in water. Clomazone is a post-emergent herbicide marketed as Gamit. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.013DOI Listing

Elevated atmospheric CO might increase the health risk of long-term ingestion of leafy vegetables cultivated in residual DDT polluted soil.

Chemosphere 2019 Apr 6;227:289-298. Epub 2019 Apr 6.

Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou, 350002, China. Electronic address:

Residual dichlorodiphenyltrichloroethane (DDT) in the environment and a continuously increasing atmospheric carbon dioxide (CO) concentration are two issues that have received a lot of attention. This study was conducted using a pot experiment to investigate the interactive effects of elevated CO and DDT on the uptake of DDT, the physiological responses and the resulting health risks in three vegetables. These vegetables included Brassica juncea var. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.024DOI Listing

Polycyclic aromatic hydrocarbons (PAHs) formation during the fast pyrolysis of hazardous health-care waste.

Chemosphere 2019 Apr 5;227:277-288. Epub 2019 Apr 5.

Farayand Sabz Pakan Co., Tehran, Iran. Electronic address:

Health-care waste management is a challenge for the health sector. Currently, pyrolysis technologies are being used to treat medical waste that can convert it to a hydrocarbon fuel. In the present study, hazardous health-care waste was pyrolyzed using a continuous tubular fast pyrolysis reactor. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535193067
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http://dx.doi.org/10.1016/j.chemosphere.2019.04.028DOI Listing
April 2019
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Halogenated flame retardants in mangrove sediments from the Pearl River Estuary, South China: Comparison with historical data and correlation with microbial community.

Chemosphere 2019 Apr 11;227:315-322. Epub 2019 Apr 11.

State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.

Polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE), 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE), tetrabromobisphenol A (TBBPA), hexabromocyclododecane (HBCDD) and dechlorane plus (DP) were measured in sediments collected from three mangrove wetlands of the Pearl River Estuary (PRE) in South China. This study aims to investigate the distribution of these halogenated flame retardants (HFRs) and the correlations between HFRs and microbial community structure in mangrove sediments. Concentrations of PBDEs, DBDPE, BTBPE, TBBPA, HBCDD and DP in mangrove sediments ranged from 6. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.075DOI Listing

Levels, spatial distribution and isomer profiles of perfluoroalkyl acids in soil, groundwater and tap water around a manufactory in China.

Chemosphere 2019 Apr 9;227:305-314. Epub 2019 Apr 9.

Shenzhen Center for Disease Control and Prevention, Shenzhen, 518055, China.

In this study, 32 surface soil samples, 24 groundwater samples, and 6 tap water samples were collected around a perfluorosulfonates (PFSAs) manufactory in China to analyze the distributions of perfluoroalkyl acids (PFAAs) including linear and branched isomers. The total concentrations of PFAAs (∑PFAAs) ranged from 1.30 to 913 ng/g on a dry weight basis (dw), 31. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.027DOI Listing
April 2019
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Insights into the effects of acidification on sewage sludge dewaterability through pH repeated adjustment.

Chemosphere 2019 Apr 8;227:269-276. Epub 2019 Apr 8.

State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China. Electronic address:

Sludge acidification is a popular and efficient pretreatment method for improving sludge dewaterability. To explore the mechanisms of sludge acidification deeply and provide a theoretical basis for practical application, sewage sludge was repeatedly treated by acidification conditioning. The sludge pH was continuously adjusted from 7. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.020DOI Listing

Sequential treatment of paper and pulp industrial wastewater: Prediction of water quality parameters by Mamdani Fuzzy Logic model and phytotoxicity assessment.

Chemosphere 2019 Apr 5;227:256-268. Epub 2019 Apr 5.

Department of Earth Sciences, Faculty of Natural Sciences, University of Tabriz, 29 Bahman Boulevard, Tabriz, East Azerbaijan, Iran.

Recycling of industrial wastewater meeting quality standards for agricultural and industrial demands is a viable option. In this study, paper and pulp industrial wastewater were treated with three biological treatments viz. aerobic, anaerobic and sequential (i. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535193066
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http://dx.doi.org/10.1016/j.chemosphere.2019.04.022DOI Listing
April 2019
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3.340 Impact Factor

Mechanism analysis to improve sludge dewaterability during anaerobic digestion based on moisture distribution.

Chemosphere 2019 Mar 27;227:247-255. Epub 2019 Mar 27.

School of Environmental Science and Engineering. Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China. Electronic address:

Previous studies have demonstrated that anaerobic digestion (AD) enhances sludge dewaterability. However, the mechanism of AD influence on digested sludge dewaterability is still not well understood. In this study, moisture distribution and bond energy were used to evaluate the influence of AD on sludge dewaterability. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.03.150DOI Listing
March 2019
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Associations between polychlorinated dibenzo-dioxins and polychlorinated dibenzo-furans exposure and oxidatively generated damage to DNA and lipid.

Chemosphere 2019 Apr 9;227:237-246. Epub 2019 Apr 9.

Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. Electronic address:

Polychlorinated dibenzo-dioxins and polychlorinated dibenzo-furans (PCDD/Fs) have been reported to induce reactive oxygen species and oxidative stress, but the dose-response relationships have not been explored in molecular epidemiological studies. In this study, a total of 602 participants were recruited, comprising of 215 foundry workers, 171 incineration workers and 216 residents living more than 5 km away from the plants as the reference group. Individual PCDD/Fs exposures were estimated according to PCDD/Fs levels of working and living ambient air and daily foods. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.057DOI Listing
April 2019
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Anthropogenic and lithogenic fluxes of atmospheric lead deposition over the past 3600 years from a peat bog, Changbai Mountains, China.

Chemosphere 2019 Apr 8;227:225-236. Epub 2019 Apr 8.

State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing, 100875, China.

Ombrotrophic peatlands are widely used to reconstruct atmospheric metal deposition histories. Here, we estimated the long-term atmospheric Pb deposition flux using ombrotrophic peatland data from the Changbai Mountains, northeast China. A peat profile of 320-cm depth was sampled and cut into 164 slices for measurement of Pb and other elements by ICP-MS and ICP-AES and radiometric dating by Pb, Cs and C. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.047DOI Listing
April 2019
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Fabrication of novel magnetic MnFeO/bio-char composite and heterogeneous photo-Fenton degradation of tetracycline in near neutral pH.

Chemosphere 2019 Jun 2;224:910-921. Epub 2019 Mar 2.

Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan, 410004, China.

Iron-based magnetic materials are deemed to be promising catalysts for various catalytic reactions and can be recovered conveniently by an external magnetic field. MnFeO nanoparticle and MnFeO/bio-char composite with different bio-char contents were prepared to activate hydrogen peroxide for the degradation of tetracycline (TC). The catalysts were characterized by SEM, BET, XRD, FTIR, VSM and XPS. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.02.193DOI Listing
June 2019
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Occurrence and distribution of antibiotics and resistance genes in greenhouse and open-field agricultural soils in China.

Chemosphere 2019 Jun 27;224:900-909. Epub 2019 Feb 27.

Department of Environmental Science, Zhejiang University, Hangzhou, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, China. Electronic address:

This study conducted a national scale survey to assess the levels and distributions of 13 commonly used antibiotics and nine antibiotic resistance genes (ARGs) in the greenhouse and open-field agricultural soils in China. The concentrations of antibiotics in the greenhouse and open-field soils were 428 ng/g (n = 51) and 193 ng/g (n = 51), respectively. The abundances of ARGs ranged from 1. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.02.167DOI Listing

Diclofenac as an environmental threat: Impact on the photosynthetic processes of Lemna minor chloroplasts.

Chemosphere 2019 Jun 1;224:892-899. Epub 2019 Mar 1.

Department of Plant Physiology and Anatomy, Institute of Experimental Biology, Faculty of Science, Masaryk University Brno, Kotlářská 2, 611 37 Brno, Czech Republic. Electronic address:

Mechanisms of pharmaceuticals action on biochemical and physiological processes in plants that determine plant growth and development are still mostly unknown. This study deals with the effects of non-steroidal anti-inflammatory drug diclofenac (DCF) on photosynthesis as an essential anabolic process. Changes in primary and secondary photosynthetic processes were assessed in chloroplasts isolated from Lemna minor exposed to 1, 10, 100, and 1000 μM DCF. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.02.197DOI Listing
June 2019
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Dandelion is more tolerant to cadmium than to nickel excess.

Chemosphere 2019 Jun 27;224:884-891. Epub 2019 Feb 27.

Department of Pharmacognosy, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria.

Comparative accumulation of cadmium (Cd) and nickel (Ni) and the consequences for the metabolism of common weed dandelion (triploid ones of Taraxacum sect. Taraxacum) were studied here for the first time. Cd accumulated more in both shoots and roots (489 and 2486 μg/g DW) than Ni (165 and 858 μg/g DW) after 14 days of exposure and only root Ni content did not increase between 7 and 14 days of exposure. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535193040
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http://dx.doi.org/10.1016/j.chemosphere.2019.02.181DOI Listing
June 2019
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Changes in the activities of antioxidant enzymes and reduced glutathione level in human erythrocytes exposed to selected brominated flame retardants.

Chemosphere 2019 Apr 5;227:93-99. Epub 2019 Apr 5.

Department of Biophysics of Environmental Pollution, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143 St., 90-236, Lodz, Poland.

Currently, more and more concerns are related to oxidative stress appearing in cells as a result of xenobiotics action. It has been found that selected brominated flame retardants (BFRs) can cause reactive oxygen species (ROS) induction at environmental concentrations. Excessive ROS induction can contribute to the redox imbalance in the cell. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.008DOI Listing