103 results match your criteria Toxicity Organic Phosphorous Compounds & Carbamates


Life cycle cost and environmental assessment for resource-oriented toilet systems.

J Clean Prod 2018 Sep;196:1188-1197

School of Environment, Tsinghua University, Beijing, 100084, PR China.

The rich content of nutrients in human waste provides an outlook for turning it from pollutants to potential resources. The pilot-scale resource-oriented toilet with forward osmosis technology was demonstrated to have advantages to recover clean water, nitrogen, phosphorus, potassium, biogas, and heat from urine and feces. For the possibility of further full-scale implementation in different scenarios, six resource-oriented toilet systems and one conventional toilet system were designed in this study. Read More

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http://dx.doi.org/10.1016/j.jclepro.2018.06.129DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6106690PMC
September 2018
1 Read

The influence of natural dissolved organic matter on herbicide toxicity to marine microalgae is species-dependent.

Aquat Toxicol 2018 May 27;198:103-117. Epub 2018 Feb 27.

Ifremer, Laboratoire d'Écotoxicologie, rue de l'île d'Yeu, BP 21105, F-44311 Nantes Cedex 03, France.

Microalgae, which are the foundation of aquatic food webs, may be the indirect target of herbicides used for agricultural and urban applications. Microalgae also interact with other compounds from their environment, such as natural dissolved organic matter (DOM), which can itself interact with herbicides. This study aimed to evaluate the influence of natural DOM on the toxicity of three herbicides (diuron, irgarol and S-metolachlor), singly and in ternary mixtures, to two marine microalgae, Chaetoceros calcitrans and Tetraselmis suecica, in monospecific, non-axenic cultures. Read More

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http://dx.doi.org/10.1016/j.aquatox.2018.02.019DOI Listing
May 2018
7 Reads

Inhibition of Cyanobacterial Growth on a Municipal Wastewater Sidestream Is Impacted by Temperature.

mSphere 2018 Jan-Feb;3(1). Epub 2018 Feb 28.

Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA.

Sidestreams in wastewater treatment plants can serve as concentrated sources of nutrients (i.e., nitrogen and phosphorus) to support the growth of photosynthetic organisms that ultimately serve as feedstock for production of fuels and chemicals. Read More

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http://dx.doi.org/10.1128/mSphere.00538-17DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5830474PMC
February 2018
1 Read

Phosphorus application reduces aluminum toxicity in two Eucalyptus clones by increasing its accumulation in roots and decreasing its content in leaves.

PLoS One 2018 11;13(1):e0190900. Epub 2018 Jan 11.

Forestry College, Guangxi University, Nanning, Guangxi, China.

Under acidic conditions, aluminum (Al) toxicity is an important factor limiting plant productivity; however, the application of phosphorus (P) might alleviate the toxic effects of Al. In this study, seedlings of two vegetatively propagated Eucalyptus clones, E. grandis × E. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0190900PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5764327PMC
February 2018
5 Reads

Modulation of hexavalent chromium toxicity on Οriganum vulgare in an acidic soil amended with peat, lime, and zeolite.

Chemosphere 2018 Mar 19;195:291-300. Epub 2017 Dec 19.

University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea. Electronic address:

Dynamics of chromate (Cr(VI)) in contaminated soils may be modulated by decreasing its phytoavailability via the addition of organic matter-rich amendments, which might accelerate Cr(VI) reduction to inert chromite (Cr(III)) or high-cation exchange capacity amendments. We studied Cr(VI) phytoavailability of oregano in a Cr(VI)-spiked acidic soil non-treated (S) and treated with peat (SP), lime (SL), and zeolite (SZ). The addition of Cr(VI) increased the concentrations of Cr(VI) and Cr(III) in soils and plants, especially in the lime-amended soil. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2017.12.069DOI Listing
March 2018
6 Reads
3.340 Impact Factor

Mercury in rice (Oryza sativa L.) and rice-paddy soils under long-term fertilizer and organic amendment.

Ecotoxicol Environ Saf 2018 Apr 19;150:116-122. Epub 2017 Dec 19.

College of Resources and Environment, Southwest University, China; Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing, China. Electronic address:

High levels of mercury (Hg), especially methylmercury (MeHg), in rice is of concern due to its potential of entering food chain and the high toxicity to human. The level and form of Hg in rice could be influenced by fertilizers and other soil amendments. Studies were conducted to evaluate the effect of 24 years application of chemical fertilizers and organic amendments on total Hg (THg) and MeHg and their translocation in soil, plants, and rice grain. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2017.12.021DOI Listing
April 2018
6 Reads

Effects of phosphorus sources on volatile organic compound emissions from Microcystis flos-aquae and their toxic effects on Chlamydomonas reinhardtii.

Environ Geochem Health 2018 Aug 20;40(4):1283-1298. Epub 2017 Dec 20.

School of Forestry and Biotechnology, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China.

There is diverse phosphorus (P) in eutrophicated waters, but it is considered as a crucial nutrient for cyanobacteria growth due to its easy precipitation as insoluble salts. To uncover the effects of complex P nutrients on the emission of volatile organic compounds (VOCs) from cyanobacteria and their toxic effects on other algae, the VOCs from Microcystis flos-aquae supplied with different types and amount of P nutrients were analyzed, and the effects of VOCs and their two main compounds on Chlamydomonas reinhardtii growth were investigated. When M. Read More

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http://link.springer.com/10.1007/s10653-017-0055-y
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http://dx.doi.org/10.1007/s10653-017-0055-yDOI Listing
August 2018
5 Reads

Effect of Microbial inoculation in combating the aluminium toxicity effect on growth of Zea mays.

Cell Mol Biol (Noisy-le-grand) 2017 Jul 31;63(6):79-82. Epub 2017 Jul 31.

School of Sciences, Noida International University, G.B Nagar, Uttar Pradesh, India.

The present study is aimed at improving the aluminium tolerance in maize crop employing the potential of microbial inoculants in conferring resistance to these toxicities via production of certain chelating compounds like siderophores, exopolysachharides and organic acids. Acid soils have now-a-days become one of the key factors for limiting growth of many agriculturally important crops. Aluminium  is one of the major elements present in acid soils and is mainly responsible for toxicity in the soil. Read More

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http://dx.doi.org/10.14715/cmb/2017.63.6.16DOI Listing
July 2017
1 Read

Responses of Periphyton to FeO Nanoparticles: A Physiological and Ecological Basis for Defending Nanotoxicity.

Environ Sci Technol 2017 Sep 30;51(18):10797-10805. Epub 2017 Aug 30.

State Key Laboratory of Marine Pollution, City University of Hong Kong , Hong Kong SAR, China.

The toxic effects of nanoparticles on individual organisms have been widely investigated, while few studies have investigated the effects of nanoparticles on ubiquitous multicommunity microbial aggregates. Here, periphyton as a model of microbial aggregates, was employed to investigate the responses of microbial aggregates exposed continuously to FeO nanoparticles (5.0 mg L) for 30 days. Read More

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http://dx.doi.org/10.1021/acs.est.7b02012DOI Listing
September 2017
11 Reads

Toxicity identification and evaluation for the effluent from a nonmetallic mineral mining facility in Korea using D. magna.

Toxicol Ind Health 2017 Sep 16;33(9):681-686. Epub 2017 Aug 16.

Department of Environmental Science, Hankuk University of Foreign Studies, Yongin, Gyeonggi-do, Korea.

Industrial wastewater has attracted increasing attention in recent years because of its impact on ecosystems and human health. Whole-effluent tests are generally used to monitor toxicities of unknown chemicals and conventional pollutants from industrial effluent discharges. This study described identification evaluation (TIE) procedures to determine the acute toxicity of a nonmetallic mineral mining facility effluent that was toxic to Daphnia magna. Read More

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http://journals.sagepub.com/doi/10.1177/0748233717714192
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http://dx.doi.org/10.1177/0748233717714192DOI Listing
September 2017
9 Reads

Effects of polyphosphates and orthophosphate on the dissolution and transformation of ZnO nanoparticles.

Chemosphere 2017 Jun 27;176:255-265. Epub 2017 Feb 27.

Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China. Electronic address:

The fate and toxicity of zinc oxide nanoparticles (ZnO NPs) in nature are affected by solution chemistry such as pH, anions, and natural organic matter (NOM). Inorganic polyphosphates are environmentally ubiquitous phosphorus (P) species that may change the speciation and environmental fate of ZnO NPs. In this study, the interactions of polyphosphates with ZnO NPs and the impacts on ZnO NP dissolution and transformation were investigated and compared with orthophosphate (P). Read More

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http://dx.doi.org/10.1016/j.chemosphere.2017.02.134DOI Listing
June 2017
30 Reads

Release of volatile and semi-volatile toxicants during house fires.

Chemosphere 2017 Apr 27;173:580-593. Epub 2016 Dec 27.

Centre for Fire Chemistry and Fire Toxicity, University of Central Lancashire, Preston, PR1 2HE, UK. Electronic address:

Qualitative results are presented from analysis of volatile and semi-volatile organic compounds (VOCs/SVOCs) obtained through sampling of gaseous effluent and condensed particulates during a series of experimental house fires conducted in a real house. Particular emphasis is given to the 16 polycyclic aromatic hydrocarbons (PAHs) listed by the Environmental Protection Agency due to their potentially carcinogenic effects. The initial fuel packages were either cooking oil or a single sofa; these were burned both alone, and in furnished surroundings. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2016.12.079DOI Listing
April 2017
9 Reads

Effects of harbor activities on sediment quality in a semi-arid region in Brazil.

Ecotoxicol Environ Saf 2017 Jan 7;135:137-151. Epub 2016 Oct 7.

Núcleo de Estudos em Poluição e Ecotoxicologia Aquática, UNESP - São Vicente, Brazil.

Tropical marine environments are rich in biodiversity and the presence of harbor activities in these areas can harm the coastal ecosystems. In this study, we assessed sediment quality of two harbors from a tropical region in Brazil by applying multiple lines-of-evidence approach. This approach included the integration of results on: (1) grain size, organic matter, organic carbon, nitrogen, phosphorus, trace metals, polycyclic aromatic hydrocarbons, linear alkylbenzenes, and tributyltin; (2) acute toxicity of whole sediments and chronic toxicity of liquid phases; and (3) benthic community descriptors. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2016.09.020DOI Listing
January 2017
4 Reads

Characterization of wood mulch and leachate/runoff from three wood recycling facilities.

J Environ Manage 2016 Nov 6;182:421-428. Epub 2016 Aug 6.

Department of Environmental Sciences, Rutgers, The State University of New Jersey, 14 College Farm Road, New Brunswick, NJ 08901-8551, USA.

Large-scale open storage of wood mulch is common practice at wood recycling facilities. During rain and snow melt, leachate with soluble compounds and suspended particles is released from mulch stockpiles. The objective of this study was to determine the quality of leachate/runoff from wood recycling facilities to evaluate its potential to contaminate receiving waterbodies. Read More

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http://dx.doi.org/10.1016/j.jenvman.2016.07.093DOI Listing
November 2016
11 Reads

[ORGANOPHOSPHORUS FLAME RETARDANTS - TOXICITY AND INFLUENCE ON HUMAN HEALTH].

Med Pr 2015 ;66(2):235-64

Organophosphorus flame retardants (flame retardants, FRs) have been used for several decades in many industries, including the production of dyes, varnishes, adhesives, synthetic resins, polyvinyl chloride, hydraulic fluids, plastics and textiles. Their importance in recent times has increased due to i.a. Read More

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http://dx.doi.org/10.13075/mp.5893.00120DOI Listing
September 2015
14 Reads

Phosphorus Availability Alters the Effects of Silver Nanoparticles on Periphyton Growth and Stoichiometry.

PLoS One 2015 15;10(6):e0129328. Epub 2015 Jun 15.

Department of Biology, Trent University, Peterborough, Ontario, Canada.

Exposure to silver nanoparticles (AgNPs) may alter the structure and function of freshwater ecosystems. However, there remains a paucity of studies investigating the effects of AgNP exposure on freshwater communities in the natural environment where interactions with the ambient environment may modify AgNP toxicity. We used nutrient diffusing substrates to determine the interactive effects of AgNP exposure and phosphorus (P) enrichment on natural assemblages of periphyton in three Canadian Shield lakes. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0129328PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4468089PMC
March 2016
3 Reads

Effect of Pre-emergence Herbicides on Microbial Biomass and Biochemical Processes in a Typic Fluvaquent Soil Amended with Farm Yard Manure.

Bull Environ Contam Toxicol 2015 Sep 6;95(3):395-400. Epub 2015 Jun 6.

Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, 741252, West Bengal, India,

Application of thiobencarb, pendimethalin and pretilachlor at rates of 7.5, 10.0 and 2. Read More

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http://link.springer.com/10.1007/s00128-015-1571-z
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http://dx.doi.org/10.1007/s00128-015-1571-zDOI Listing
September 2015
13 Reads

Nitrogenous nutrients promote the growth and toxicity of Dinophysis acuminata during estuarine bloom events.

PLoS One 2015 20;10(4):e0124148. Epub 2015 Apr 20.

Stony Brook University, School of Marine and Atmospheric Sciences, Southampton, New York, United States of America.

Diarrhetic Shellfish Poisoning (DSP) is a globally significant human health syndrome most commonly caused by dinoflagellates within the genus Dinophysis. While blooms of harmful algae have frequently been linked to excessive nutrient loading, Dinophysis is a mixotrophic alga whose growth is typically associated with prey availability. Consequently, field studies of Dinophysis and nutrients have been rare. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0124148PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4403995PMC
April 2016
4 Reads

Antidiarrheal mechanism and ionic profile of Carpolobia lutea ethanolic stem-bark extract in rats.

Afr J Tradit Complement Altern Med 2014 28;11(2):257-63. Epub 2014 Jan 28.

Department of Organic Chemistry, Chemistry Institute, São Paulo State University, UNESP-CP 355, CEP 14801-970, Araraquara, SP, Brazil.

Background: The stem-bark extract of Carpolobia lutea (Polygalaceae), used in ethno-medicine as anti-diarrhea was pharmacologically evaluated. This was the first report of assessment of the ethanolic stem extract (ESE), of C. lutea as anti-diarrhoeal agent in rats. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4202629PMC
July 2015
6 Reads

De novo assembly of Aureococcus anophagefferens transcriptomes reveals diverse responses to the low nutrient and low light conditions present during blooms.

Front Microbiol 2014 24;5:375. Epub 2014 Jul 24.

Department of Earth and Environmental Sciences and the Lamont-Doherty Earth Observatory, Columbia University Palisades, NY, USA.

Transcriptome profiling was performed on the harmful algal bloom-forming pelagophyte Aureococcus anophagefferens strain CCMP 1850 to assess responses to common stressors for dense phytoplankton blooms: low inorganic nitrogen concentrations, low inorganic phosphorus concentrations, low light levels, and a replete control. The de novo assemblies of pooled reads from all treatments reconstructed ~54,000 transcripts using Trinity, and ~31,000 transcripts using ABySS. Comparison to the strain CCMP 1984 genome showed that the majority of the gene models were present in both de novo assemblies and that roughly 95% of contigs from both assemblies mapped to the genome, with Trinity capturing slightly more genome content. Read More

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http://dx.doi.org/10.3389/fmicb.2014.00375DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4109616PMC
August 2014
3 Reads

Extracellular polymeric substances of bacteria and their potential environmental applications.

J Environ Manage 2014 Nov 6;144:1-25. Epub 2014 Jun 6.

U. S. Environmental Protection Agency, P.O. Box 17-2141, Kansas City, KS 66117, USA.

Biopolymers are considered a potential alternative to conventional chemical polymers because of their ease of biodegradability, high efficiency, non-toxicity and non-secondary pollution. Recently, extracellular polymeric substances (EPS, biopolymers produced by the microorganisms) have been recognised by many researchers as a potential flocculent for their applications in various water, wastewater and sludge treatment processes. In this context, literature information on EPS is widely dispersed and is very scarce. Read More

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http://mediatum.ub.tum.de/doc/613150/613150.pdf
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http://www.iosrphr.org/papers/v2i2/ZC022276281.pdf
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http://www.pjoes.com/pdf/16.6/799-806.pdf
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http://linkinghub.elsevier.com/retrieve/pii/S030147971400250
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http://dx.doi.org/10.1016/j.jenvman.2014.05.010DOI Listing
November 2014
4 Reads

Aluminium-phosphate interactions in the rhizosphere of two bean species: Phaseolus lunatus L. and Phaseolus vulgaris L.

J Sci Food Agric 2013 Dec 16;93(15):3891-6. Epub 2013 Oct 16.

Faculty of Science and Technology, Free University of Bolzano, Piazza Università 5, I-39100, Bolzano, Italy.

Background: Plants differ in their response to high aluminium (Al) concentrations, which typically cause toxicity in plants grown on acidic soils. The response depends on plant species and environmental conditions such as substrate and cultivation system. The present study aimed to assess Al-phosphate (P) dynamics in the rhizosphere of two bean species, Phaseolus vulgaris L. Read More

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http://dx.doi.org/10.1002/jsfa.6392DOI Listing
December 2013
4 Reads

Global transcriptional responses of the toxic cyanobacterium, Microcystis aeruginosa, to nitrogen stress, phosphorus stress, and growth on organic matter.

PLoS One 2013 23;8(7):e69834. Epub 2013 Jul 23.

School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, USA.

Whole transcriptome shotgun sequencing (RNA-seq) was used to assess the transcriptomic response of the toxic cyanobacterium Microcystis aeruginosa during growth with low levels of dissolved inorganic nitrogen (low N), low levels of dissolved inorganic phosphorus (low P), and in the presence of high levels of high molecular weight dissolved organic matter (HMWDOM). Under low N, one third of the genome was differentially expressed, with significant increases in transcripts observed among genes within the nir operon, urea transport genes (urtBCDE), and amino acid transporters while significant decreases in transcripts were observed in genes related to photosynthesis. There was also a significant decrease in the transcription of the microcystin synthetase gene set under low N and a significant decrease in microcystin content per Microcystis cell demonstrating that N supply influences cellular toxicity. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0069834PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3720943PMC
March 2014
4 Reads

Excessive ethanol consumption under exposure to lead intensifies disorders in bone metabolism: a study in a rat model.

Chem Biol Interact 2013 Apr 30;203(2):486-501. Epub 2013 Jan 30.

Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C street, 15-222 Bialystok, Poland.

It was investigated whether ethanol (Et) modifies the damaging impact of lead (Pb) on bone metabolism in a rat model reflecting excessive alcohol consumption by humans exposed to relatively high levels of this metal. For this purpose, markers of bone formation (osteocalcin, procollagen I, osteoprotegerin, alkaline phosphatase) and resorption (telopeptides of collagen I, soluble receptor activator of nuclear factor-κB ligand), calciotropic hormones (parathormone, calcitonin, 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D) in the serum, and the femur content of mineral (including calcium - Ca and inorganic phosphorus - P(i)) and organic components were estimated in the rats exposed to 500 mg Pb/l (in drinking water) or/and Et (5 g/kg b.wt. Read More

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http://linkinghub.elsevier.com/retrieve/pii/S000927971300004
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http://dx.doi.org/10.1016/j.cbi.2013.01.002DOI Listing
April 2013
3 Reads

Presence and hazards of nutrients and emerging organic micropollutants from sewage lagoon discharges into Dead Horse Creek, Manitoba, Canada.

Sci Total Environ 2013 Feb 11;445-446:64-78. Epub 2013 Jan 11.

Richardson College for the Environment, Department of Environmental Studies and Sciences and Department of Chemistry, The University of Winnipeg, Winnipeg, MB, Canada R3B 2E9.

Nutrient enrichment and loadings of pharmaceuticals and agrochemicals into freshwater systems are common concerns, especially for water bodies receiving wastewater inputs. In the rural communities of Morden and Winkler of Manitoba, Canada, sewage lagoons discharge their wastewater directly into Dead Horse Creek, a small tributary of the Red River that empties into Lake Winnipeg. This lagoon approach to managing rural wastewaters is common across the North American Prairies. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2012.11.100DOI Listing
February 2013
9 Reads

Chemical and biological characterization of wastewater generated from hydrothermal liquefaction of Spirulina.

Environ Sci Technol 2013 Feb 11;47(4):2131-8. Epub 2013 Feb 11.

University of Illinois at Urbana-Champaign, College of Agricultural, Consumer and Environmental Sciences, Urbana, IL, USA.

Hydrothermal liquefaction (HTL) is an attractive method for converting wet biomass into petroleum-like biocrude oil that can be refined to make petroleum products. This approach is advantageous for conversion of low-lipid algae, which are promising feedstocks for sustainable large-scale biofuel production. As with natural petroleum formation, the water in contact with the produced oil contains toxic compounds. Read More

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http://dx.doi.org/10.1021/es304532cDOI Listing
February 2013
8 Reads
5.330 Impact Factor

Treatment of phosphogypsum waste produced from phosphate ore processing.

J Hazard Mater 2013 Jan 2;244-245:596-602. Epub 2012 Nov 2.

Chemistry Department, Faculty of Science, Zagazig University, El Sharqia, Egypt.

Phosphogypsum (PG), primary byproduct from phosphoric acid production, is accumulated in large stockpiles and occupies vast areas of land. Phosphogypsum is a technologically enhanced naturally occurring radioactive material (TE-NORM) that contains radionuclides from (238)U and (232)Th decay series which are of most radio-toxicity. The reduction in concentration of radionuclides content from PG was based on leaching of (226)Ra, (210)Pb, (238)U and (40)K using tri-butyl phosphate (TBP) and tri-octyl phosphine oxide (TOPO) in kerosene. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S03043894120107
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http://dx.doi.org/10.1016/j.jhazmat.2012.10.053DOI Listing
January 2013
2 Reads

Phosphorus flame retardants: properties, production, environmental occurrence, toxicity and analysis.

Chemosphere 2012 Aug 25;88(10):1119-53. Epub 2012 Apr 25.

VU University, Institute for Environmental Studies (IVM), De Boelelaan 1087, 1081 HV, Amsterdam, The Netherlands.

Since the ban on some brominated flame retardants (BFRs), phosphorus flame retardants (PFRs), which were responsible for 20% of the flame retardant (FR) consumption in 2006 in Europe, are often proposed as alternatives for BFRs. PFRs can be divided in three main groups, inorganic, organic and halogen containing PFRs. Most of the PFRs have a mechanism of action in the solid phase of burning materials (char formation), but some may also be active in the gas phase. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2012.03.067DOI Listing
August 2012
18 Reads

Soil application of dinitroaniline and arylphenoxy propionic herbicides influences the activities of phosphate-solubilizing microorganisms in soil.

Environ Monit Assess 2012 Dec 15;184(12):7453-9. Epub 2012 Feb 15.

Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal 741 252, India.

An experiment was conducted under laboratory conditions to investigate the effect of two systemic herbicides, viz. pendimethalin (a dinitroaniline) and quizalofop (an arylphenoxy propionic acid) at their recommended field application rates (1.0 kg and 50 g active ingredient per hectare, respectively), either separately or in a combination, on growth and activities of phosphate-solubilizing microorganisms in relation to their effects on biochemical transformations and availability of organic carbon, total and available phosphorus in a Typic Haplustept soil of West Bengal, India. Read More

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http://link.springer.com/10.1007/s10661-011-2512-x
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http://dx.doi.org/10.1007/s10661-011-2512-xDOI Listing
December 2012
3 Reads

Homeostatic regulation of elemental stoichiometry by Lemna gibba L. G3 when nutrient interact with toxic metals.

Ecotoxicology 2012 Mar 29;21(2):456-64. Epub 2011 Oct 29.

Institute of Materials Science and Max Bergmann Centre for Biomaterials, Technische Universität Dresden, Dresden, Germany.

We investigated responses of Lemna gibba L. to exposure to UO(2)(2+) and AsO(4)(3-) under variable PO(4)(3-) concentration. Total plant phosphorus (P(tot)) in L. Read More

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http://dx.doi.org/10.1007/s10646-011-0805-zDOI Listing
March 2012
1 Read

Sources and behaviour of polybrominated diphenyl ethers (PBDEs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in Spanish sewage sludge.

Waste Manag 2011 Jun 17;31(6):1277-84. Epub 2011 Feb 17.

Persistent Organic Pollutants Group, Environmental Department, CIEMAT, Avd. Complutense 22, Madrid 28040, Spain.

Presence, sources and behaviour of polybrominated diphenyl ethers (PBDEs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were evaluated in Spanish sewage sludge. A total of 120 samples were seasonally collected from October 2005 to September 2006 at 31 urban wastewater treatment plants (WWTPs). Concentrations of PBDEs (ranging between 57. Read More

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http://linkinghub.elsevier.com/retrieve/pii/S0956053X1100053
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http://dx.doi.org/10.1016/j.wasman.2011.01.021DOI Listing
June 2011
1 Read

Nutrient value of alum-treated poultry litter for land application.

Authors:
M Guo W Song

Poult Sci 2009 Sep;88(9):1782-92

Department of Agriculture and Natural Resources, Delaware State University, Dover, DE 19901, USA.

Alum-treated poultry litter has different chemical composition and biological properties than conventional poultry litter. To develop agronomic application rates for this particular organic fertilizer to cropland, the nutrient value (nutrient plant availability) of alum-treated poultry litter needs to be determined. Typical alum-treated poultry litter was collected from a broiler farm and examined for nutrient content, nutrient release kinetics, and nutrient value by leaching the material for 190 d under simulated weathering conditions. Read More

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http://dx.doi.org/10.3382/ps.2008-00404DOI Listing
September 2009

Alum application to improve water quality in a municipal wastewater treatment wetland.

J Environ Qual 2009 Mar-Apr;38(2):814-21. Epub 2009 Feb 25.

Soil and Water Science, Univ. of Florida, Gainesville, FL 32611, USA.

Nutrient removal in treatment wetlands declines during winter months due to temperature. A 3-mo (wintertime) mesocosm study was conducted to determine the effectiveness of alum in immobilizing P as well as other nutrients during this period of reduced treatment efficiency. Eighteen mesocosms, triplicate alum, and three controls or no alum were established with either Typha spp. Read More

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https://www.agronomy.org/publications/jeq/abstracts/38/2/814
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http://dx.doi.org/10.2134/jeq2008.0033DOI Listing
April 2009
3 Reads

Bioremediation of leachate from a green waste composting facility using waste-derived filter media.

Bioresour Technol 2008 Nov 17;99(16):7657-64. Epub 2008 Mar 17.

School of Applied Sciences, Cranfield University, Bedford MK43 OAL, UK.

The evaluation of two waste-derived materials used to treat compost leachate by biofiltration is described in this paper. Nine biofilters were constructed using 240 l, high density polyethylene containers. Three containers were filled without compaction with 200l of each of three types of filter media. Read More

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http://linkinghub.elsevier.com/retrieve/pii/S096085240800115
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http://dx.doi.org/10.1016/j.biortech.2008.01.079DOI Listing
November 2008
1 Read

Effects of a sewage treatment plant outlet pipe extension on the distribution of contaminants in the sediments of the Bay of Vidy, Lake Geneva, Switzerland.

Bioresour Technol 2008 Oct 13;99(15):7122-31. Epub 2008 Feb 13.

University of Geneva, Institute F.-A. Forel, 10 Route de Suisse, CP 416, 1290 Versoix, Switzerland.

In 2001, the municipality of Lausanne extended the outlet pipe of the sewage treatment plant into the Bay of Vidy (Lake Geneva, Switzerland) as a measure to reduce bacterial water pollution and sediment contamination close to the lake beaches. The aim of the present study was to assess the impact of this measure. Lake bottom sediments were collected and analyzed for grain size, organic matter, organic carbon, nitrogen, phosphorus, heavy metals and hydrophobic organic compounds to evaluate their concentration and spatial distribution. Read More

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http://dx.doi.org/10.1016/j.biortech.2007.12.075DOI Listing
October 2008
2 Reads

Enhanced biological phosphorus removal driven by short-chain fatty acids produced from waste activated sludge alkaline fermentation.

Environ Sci Technol 2007 Oct;41(20):7126-30

State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.

This paper examines the feasibility of using alkaline fermentative short-chain fatty acids (SCFAs) as the carbon sources of enhanced biological phosphorus removal (EBPR) microorganisms. First, the released phosphorus was recovered from the SCFA-containing alkaline fermentation liquid by the formation of struvite precipitation, and 92.8% of the soluble ortho-phosphorus (SOP) could be recovered under conditions of Mg/P = 1. Read More

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October 2007
3 Reads

Phosphorus treatment of secondary municipal effluent using oven-dried alum residual.

J Environ Sci Health A Tox Hazard Subst Environ Eng 2007 Sep;42(11):1685-91

Centre for Sustainable Infrastructure Research, National Research Council Canada, Regina, Canada.

This study aims to investigate the effectiveness of alum residuals generated during drinking water treatment for adsorption of phosphorus from secondary municipal effluent. Bench-scale experiments (batch and fixed bed column tests) were conducted using oven-dried alum residuals. Experimental results observed maximum phosphorus removal of 91%-98% using alum residual concentrations of 4 g/L to 16 g/L. Read More

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http://dx.doi.org/10.1080/10934520701518265DOI Listing
September 2007
2 Reads

Ecosystem consequences of cyanobacteria in the northern Baltic Sea.

Ambio 2007 Apr;36(2-3):195-202

Finnish Institute of Marine Research, Helsinki, Finland.

Cyanobacteria of the Baltic Sea have multiple effects on organisms that influence the food chain dynamics on several trophic levels. Cyanobacteria contain several bioactive compounds, such as alkaloids, peptides, and lipopolysaccharides. A group of nonribosomally produced oligopeptides, namely microcystins and nodularin, are tumor promoters and cause oxidative stress in the affected cells. Read More

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April 2007
6 Reads

[Organophosphorus compounds: classification and enzyme reactions].

Authors:
Anita Bosak

Arh Hig Rada Toksikol 2006 Dec;57(4):445-57

Institut za medicinska istrazivanja i medicinu rada, Zagreb, Hrvatska.

Organophosphorus compounds are derivatives of phosphoric, phosphonic or phosphinic acids whose oxygen atoms bound directly to the phosphorus atom can be substituted by sulphur or nitrogen atoms. These compounds represent a large group of organic compounds used primarily as pesticides. Some are used as drugs and the most toxic compounds as nerve agents. Read More

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December 2006
3 Reads

Trichomes of tobacco excrete zinc as zinc-substituted calcium carbonate and other zinc-containing compounds.

Plant Physiol 2006 Jul 26;141(3):1021-34. Epub 2006 May 26.

Environmental Geochemistry Group, Laboratoire de Géophysique Interne et Tectonophysique, University of Grenoble and Centre National de la Recherche Scientifique, 38041 Grenoble cedex 9, France.

Tobacco (Nicotiana tabacum L. cv Xanthi) plants were exposed to toxic levels of zinc (Zn). Zn exposure resulted in toxicity signs in plants, and these damages were partly reduced by a calcium (Ca) supplement. Read More

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http://dx.doi.org/10.1104/pp.106.082743DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1489912PMC
July 2006
5 Reads

31P MAS NMR: a useful tool for the evaluation of VX natural weathering in various urban matrixes.

Environ Sci Technol 2005 Nov;39(22):8931-5

Department of Organic Chemistry, Israel Institute for Biological Research, P.O. Box 19, Ness Ziona 74100, Israel.

The fate of chemical warfare agent VX (O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioate) in various urban matrixes was monitored utilizing 31P MAS NMR. Chosen matrixes represent buildings, roads, pavement, and earth found in urban environments. In view of the high toxicity of VX, solid state NMR afforded a fairly safe experimental mode, omitting any chance for evaporation. Read More

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November 2005
3 Reads

Assessment of a natural wetland for use in wastewater remediation.

Environ Monit Assess 2005 Dec;111(1-3):113-31

Department of Community and Environmental Health, College of Health Sciences, Old Dominion University, Virginia, U.S.A.

An environmental study was conducted to assess various aspects of the water and sediment quality of a natural wetland to determine its feasibility for advanced wastewater treatment in Louisiana. Nitrate (NO(3)), nitrite (NO(2)), ammonia (NH(4)), total Kjeldahl nitrogen (TKN), total phosphorus, chloride, total organic carbon, pH, trace metals, fecal coliform, dissolved oxygen (DO), and biochemical oxygen demand (BOD) were monitored. Productivity of a dominant shrub, Iva frutescens, in the wetland was also assessed. Read More

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http://dx.doi.org/10.1007/s10661-005-8217-2DOI Listing
December 2005

Organic phosphorus compounds--nerve agents.

Crit Care Clin 2005 Oct;21(4):673-89, v-vi

Georgia Poison Center, Hughes Spalding Children's Hospital, Grady Health System, 80 Jesse Hill Jr. Drive SE, Atlanta, GA 30303-3801, USA.

The organic phosphorous compounds (OPC) include both the military grade nerve agents and the organic phosphorous pesticides. The major mechanism of OPC toxicity is through inhibition of acetylcholinesterase in neuronal synapses leading to excess acetylcholine and overstimulation of target organs. Signs and symptoms depend on the affinity of the OPC for muscarinic versus nicotinic receptors, and are likely to include both. Read More

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http://dx.doi.org/10.1016/j.ccc.2005.05.010DOI Listing
October 2005
1 Read

Selective extraction of naturally occurring radioactive Ra2+.

Chem Soc Rev 2005 Sep 19;34(9):753-61. Epub 2005 Jul 19.

Laboratory of Supramolecular Chemistry and Technology, MESA+ Institute for Nano-technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.

Organic extractants play a significant role in the selective removal of radioactive cations from waste streams. Although, literature on the selective removal of man-made radioactive material such as Americium (Am) is widespread, the selective removal of naturally occurring radioactive material such as Ra2+ is only mentioned sporadically. This tutorial review deals with the selective extraction of the highly radiotoxic Ra2+. Read More

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http://dx.doi.org/10.1039/b506073gDOI Listing
September 2005
1 Read

Metal concentrations and mycorrhizal status of plants colonizing copper mine tailings: potential for revegetation.

Sci China C Life Sci 2005 May;48 Suppl 1:156-64

Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

A field survey of metal concentrations and mycorrhizal status of plants growing on copper mine tailings was conducted in Anhui Province, China. Available phosphorus and organic matter in the tailings were very low. High concentrations of Pb, Zn, As and Cd as well as Cu were observed on some sites. Read More

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May 2005
4 Reads

Aluminium resistance requires resistance to acid stress: a case study with spinach that exudes oxalate rapidly when exposed to Al stress.

J Exp Bot 2005 Apr 28;56(414):1197-203. Epub 2005 Feb 28.

MOE Key Lab of Environment Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou 310029, PR China.

Spinach is a vegetable with a high oxalate concentration in its tissues. Oxalate efflux from spinach (Spinacia oleracea L. cv. Read More

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http://dx.doi.org/10.1093/jxb/eri113DOI Listing
April 2005
11 Reads

5-Substituted-2,4-diamino-6-[2-(phosphonomethoxy)ethoxy]pyrimidines-acyclic nucleoside phosphonate analogues with antiviral activity.

J Med Chem 2003 Nov;46(23):5064-73

Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, CZ-166 10, Prague 6, Czech Republic.

2,4-Diamino-6-hydroxypyrimidines substituted in position 5 by an allyl, benzyl, cyanomethyl, ethoxycarbonylmethyl, phenyl, cyclopropyl, or methyl group were prepared either by C5-alkylation or by formation of the pyrimidine ring by cyclization. Their alkylation with 2-[(diisopropoxyphosphoryl)methoxy]ethyl tosylate afforded N1- and O6-regioisomers that were separated and converted to the free phosphonic acids by treatment with bromotrimethylsilane followed by hydrolysis. Reaction of 2,4-diamino-6-[[(diisopropoxyphosphoryl)methoxy]ethoxy]pyrimidine with elemental bromine, N-chloro-, or N-iodosuccinimide gave the corresponding phosphorus-protected 5-bromo-, 5-chloro-, and 5-iodo derivatives, respectively. Read More

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http://dx.doi.org/10.1021/jm030932oDOI Listing
November 2003
5 Reads

The carcinogenic potential of extractable organic matter from urban airborne particles in Shanghai, China.

Mutat Res 2003 Sep;540(1):107-17

Department of Preventive Medicine, School of Basic Medicine, Tongji University, Shanghai, China.

The genotoxicity of extractable organic matter (EOM) from airborne particles in Shanghai has been determined using short-term bioassays. EOM samples were investigated using cell morphological transformation and two-stage model of mouse skin tumorigenicity assays to detect their carcinogenic activity. DNA adducts were detected using the 32P-postlabeling technique. Read More

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September 2003
9 Reads

Comparison of mutagenicity and calf thymus DNA adducts formed by the particulate and semivolatile fractions of vehicle exhausts.

Environ Mol Mutagen 2003 ;42(1):26-36

Finnish Institute of Occupational Health, Helsinki, Finland.

In this study we compared the ability of extractable organic material from particulate and semivolatile fractions of gasoline emission to induce mutations in bacteria and form adducts with calf thymus (CT) DNA with corresponding data obtained from diesel exhaust. Exhaust particles from gasoline-powered passenger cars were collected on filters and semivolatile compounds were collected on polyurethane foam (PUF). The mutagenicity of the soluble organic fraction (SOF) was determined in Salmonella typhimurium strain TA98 and the DNA binding of aromatic compounds in the extracts was assessed by in vitro incubations with CT DNA and rat liver S9 (oxidative activation) or xanthine oxidase (reductive activation) followed by butanol-enhanced (32)P-postlabeling analysis. Read More

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http://doi.wiley.com/10.1002/em.10172
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http://dx.doi.org/10.1002/em.10172DOI Listing
September 2003
7 Reads

Harmful freshwater algal blooms, with an emphasis on cyanobacteria.

ScientificWorldJournal 2001 Apr 4;1:76-113. Epub 2001 Apr 4.

Institute of Marine Sciences, University of North Carolina at Chapel Hill, Morehead City, NC 28557, USA.

Suspended algae, or phytoplankton, are the prime source of organic matter supporting food webs in freshwater ecosystems. Phytoplankton productivity is reliant on adequate nutrient supplies; however, increasing rates of nutrient supply, much of it manmade, fuels accelerating primary production or eutrophication. An obvious and problematic symptom of eutrophication is rapid growth and accumulations of phytoplankton, leading to discoloration of affected waters. Read More

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http://downloads.hindawi.com/journals/tswj/2001/139109.pdf
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http://www.hindawi.com/journals/tswj/2001/139109/abs/
Publisher Site
http://dx.doi.org/10.1100/tsw.2001.16DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6083932PMC
April 2001
12 Reads