52,595 results match your criteria Mercury

Native Hyperaccumulator Plants with Differential Phytoremediation Potential in an Artisanal Gold Mine of the Ecuadorian Amazon.

Plants (Basel) 2022 Apr 28;11(9). Epub 2022 Apr 28.

Departamento de Física Aplicada, Escuela Superior de Ingeniería, Universidad de Cádiz, Campus de Puerto Real avenida, República Saharahui s/n, 11510 Puerto Real, Spain.

In tropical forests of southern Ecuador, artisanal gold mining releases heavy metals that become xenobiotic with indefinite circulation and eventual bioaccumulation. Restoration and rehabilitation of degraded mining sites represent a major ecological, technological and economic issue. In this study, we estimate the capacity of two native woody plants to accumulate cadmium (Cd), lead (Pb), zinc (Zn) and mercury (Hg), with the goal of developing effective strategies for phytoremediation of mining sites. Read More

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Temporal Associations between Tri-Ponderal Mass Index and Blood Pressure in Chinese Children: A Cross-Lag Analysis.

Nutrients 2022 Apr 24;14(9). Epub 2022 Apr 24.

Department of Epidemiology and Health Statistics, School of Public Health, Qingdao University, Qingdao 266071, China.

Background: No longitudinal studies have explored the relationship between tri-ponderal mass index (TMI) and blood pressure (BP) in children. This study is aimed to investigate the temporal associations between TMI and BP among children in China.

Methods: A longitudinal study was carried out with Chinese children from 2014 to 2019. Read More

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Analysis of Mercury Content in Various Types of Tea () and Yerba Mate ().

Int J Environ Res Public Health 2022 May 1;19(9). Epub 2022 May 1.

Department of Toxicology and Bioanalysis, Faculty of Pharmaceutical Science, Medical University of Silesia, 30 Ostrogórska Str., 41-200 Sosnowiec, Poland.

Due to the content of active ingredients, teas can be used prophylactically, but most of all they are consumed for taste reasons. As with food or water, these products can be contaminated with heavy metals, including mercury. Mercury (Hg) is a toxic element, it causes many side effects in the human body depending on the form of Hg, which can include respiratory failure, kidney damage, neurological disorders. Read More

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Transdisciplinary Communities of Practice to Resolve Health Problems in Southeast Asian Artisanal and Small-Scale Gold Mining Communities.

Int J Environ Res Public Health 2022 Apr 29;19(9). Epub 2022 Apr 29.

Research Institute for Humanity and Nature, Kyoto 603-8047, Japan.

Artisanal and small-scale gold mining (ASGM) has been a major part of people's livelihood in the rural areas of many developing countries, including those in Southeast Asia (SEA). Nevertheless, because of the use of mercury, ASGM activities have significant local and global adverse impacts on the environment and ASGM community health. Although there have been many monodisciplinary projects by academic researchers and governments to solve the environmental and health problems in SEA ASGM communities, they have not been sufficient to solve the complex socioeconomic problems. Read More

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Mercury and Arsenic Discharge from Circumneutral Waters Associated with the Former Mining Area of Abbadia San Salvatore (Tuscany, Central Italy).

Int J Environ Res Public Health 2022 Apr 23;19(9). Epub 2022 Apr 23.

Department of Earth Sciences, University of Florence, Via G. La Pira 4, 50121 Florence, Italy.

Dissolved and suspended toxic elements in water discharged from abandoned and active mining areas pose several critical issues, since they represent a threat to the environment. In this work, we investigated the water, suspended particulates, and stream sediments of a 2.1 km long creek (Fosso della Chiusa) that is fed by waters draining the galleries of the abandoned Hg mining area of Abbadia San Salvatore (Mt. Read More

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Dental amalgam: the history and legacy you perhaps never knew?

Br Dent J 2022 May 13;232(9):633-637. Epub 2022 May 13.

Convenor, ISO Technical Committee 106, Subcommittee 1, Working Group 7, Dental Amalgam, International Organisation for Standardisation, Switzerland; Formerly Reader in Dental Material Science, The Dental School, Dundee, UK.

Much has been written about dental amalgam. Over many years, it has served the profession well, yet on environmental grounds its use is being phased down. This article seeks to explore key milestones in the history and development of this versatile material, as well as highlighting how international standards have assisted in reducing environmental mercury contamination. Read More

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Temporal trends of mercury in Arctic biota: 10 more years of progress in Arctic monitoring.

Sci Total Environ 2022 May 10:155803. Epub 2022 May 10.

Aarhus University, Arctic Research Centre (ARC), Department of Ecoscience, P.O. Box 358, DK-4000 Roskilde, Denmark. Electronic address:

Temporal trend analysis of (total) mercury (THg) concentrations in Arctic biota were assessed as part of the 2021 Arctic Monitoring and Assessment Programme (AMAP) Mercury Assessment. A mixed model including an evaluation of non-linear trends was applied to 110 time series of THg concentrations from Arctic and Subarctic biota. Temporal trends were calculated for full time series (6-46 years) and evaluated with a particular focus on recent trends over the last 20 years. Read More

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Reusable Extractant and Direct Catalytic Mediation of Water/Oil/Chlorodifluoromethane Nano-Emulsion in Natural Gas Condensate for Efficient Conversion of Chloride Impurities Into the Dicopper Chloride Trihydroxide Nanoparticles.

Front Chem 2022 26;10:823357. Epub 2022 Apr 26.

Department of Chemistry, College of Sciences, Shiraz University, Shiraz, Iran.

This research introduces an oil-in-water (O/W) nano-emulsion (oil-water- ) as the reusable extractant phase using liquid-liquid extraction methodology for the removal efficiency of Cl and Hg(0) [between 90% and ∼100%, deepening on the nature of the natural gas condensate (NGC)] at a brief separation time (<3.0 min). The achieved safety of the NGC using this nano-emulsion results in efficient reduction in the corrosion rate during testing iron-based fragments (vs. Read More

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Photodegradation and In Silico Molecular Docking Study of a Diuretic Drug: Clopamide.

ACS Omega 2022 Apr 13;7(16):13870-13877. Epub 2022 Apr 13.

Department of Chemistry, College of Sciences and Humanities, Prince Sattam bin Abdulaziz University 11892 Al-Kharj, Saudi Arabia.

Clopamide (CPD, ) is a piperidine and sulfamoylbenzamide-based diuretic drug and a potential photosensitizing sulfonamide; its phototransformation was investigated using ,-dimethylaniline (DMA) as an electron donor and 1,4-dicyanonaphthalene (DCN) as an electron acceptor in an immersion-well-type photochemical reactor fitted with a medium-pressure mercury vapor lamp (450 W). Photodegradation of the drug Clopamide resulted in two significant products via photoinduced electron transfer. Structures of these products were deduced from their H NMR, C NMR, mass, and IR spectra. Read More

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Azo-Linked Porous Organic Polymers for Selective Carbon Dioxide Capture and Metal Ion Removal.

ACS Omega 2022 May 21;7(17):14535-14543. Epub 2022 Apr 21.

Mechanical Engineering Department, Faculty of Engineering, KFUPM, Dhahran 31261, Saudi Arabia.

The facile and environmentally friendly synthesis of porous organic polymers with designed polar functionalities decorating the interior frameworks as an excellent adsorbent for selective carbon dioxide capture and metal ion removal is a target worth pursuing for environmental applications. In this regard, two azo-linked porous organic polymers denoted man-Azo-P1 and man-Azo-P2 were synthesized in water by the azo-linking of 4,4'-diaminobiphenyl (benzidine) and 4,4'-methylenedianiline, respectively, with 1,3,5-trihydroxybenzene. The resulting polymers showed good BET surface areas of 290 and 78 m g for man-Azo-P1 and man-Azo-P2, respectively. Read More

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Mercury Removal from Water Using a Novel Composite of Polyacrylate-Modified Carbon.

ACS Omega 2022 May 18;7(17):14820-14831. Epub 2022 Apr 18.

Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.

The contamination of groundwater by mercury (Hg) is a serious global threat, and its removal is of great importance. Activated carbon (AC) is considered a very promising adsorbent to remove Hg from water systems. However, specific functional groups can be added to AC to enhance its adsorption efficiency. Read More

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Mercury bioremediation by engineered Pseudomonas putida KT2440 with adaptationally optimized biosecurity circuit.

Environ Microbiol 2022 May 12. Epub 2022 May 12.

CAS Key Laboratory of Microbial Physiological & Metabolic Engineering, State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.

Hazardous materials, such as heavy metals, are the major sources of health risk. Using genetically modified organisms (GMOs) to dispose heavy metals has the advantages of strong environmental compatibility and high efficiency. However, the biosecurity of GMOs used in the environment is a major concern. Read More

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NBMI Exerts Protection Against Copper Overload in HepG2 and SH-SY5Y Cell Lines.

FASEB J 2022 May;36 Suppl 1

Pharmaceutical Sciences, MCPHS University, School of Pharmacy, Boston, MA.

Copper (Cu) is a naturally occurring essential element required for many biological processes. At low concentrations, Cu plays a vital role by getting incorporated into various metalloenzymes and at higher concentrations can be harmful to hepatic, central, and renal systems. Chronic toxicity with high concentrations of Cu have been characterized in Wilsons's disease patients, and chelation has been the mainstay of therapy. Read More

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FTIR Spectroscopy Reveals Molecular Changes in BPC 157 Treated Blood Vessels.

FASEB J 2022 May;36 Suppl 1

pathology, School of Medicine University of Zagreb, Zagreb.

From the rats treated with stable gastric pentadecapeptide BPC 157 (10ng/kg ip) or saline (5ml/kg ip) at 5 min before sacrifice, the spectra of thoracic aorta tissue samples were compared. From each rat, 20 samples were cut and FTIR spectra were recorded. Vibrational spectra of the samples were recorded with a Perkin-Elmer Spectrum GX spectrometer equipped with liquid N refrigerated Mercury Cadmium Telluride (MCT) detector. Read More

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Modelling mercury sorption of a polysulfide coating made from sulfur and limonene.

Phys Chem Chem Phys 2022 May 13. Epub 2022 May 13.

Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia.

A polymer made from sulfur and limonene was used to coat silica gel and then evaluated as a mercury sorbent. A kinetic model of mercury uptake was established for a range of pH values and concentrations of sodium chloride. Mercury uptake was generally rapid from pH = 3 to pH = 11. Read More

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Updated trends for atmospheric mercury in the Arctic: 1995-2018.

Sci Total Environ 2022 May 9:155802. Epub 2022 May 9.

IVL Swedish Environmental Institute, Aschebergsgatan 44, 411 33 Gothenburg, Sweden.

The Arctic region forms a unique environment with specific physical, chemical, and biological processes affecting mercury (Hg) cycles and limited anthropogenic Hg sources. However, historic global emissions and long range atmospheric transport has led to elevated Hg in Arctic wildlife and waterways. Continuous atmospheric Hg measurements, spanning 20 years, and increased monitoring sites has allowed a more comprehensive understanding of how Arctic atmospheric mercury is changing over time. Read More

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Exposure to metal mixtures and hypertensive disorders of pregnancy: A nested case-control study in China.

Environ Pollut 2022 May 9:119439. Epub 2022 May 9.

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

Exposure to metals has been linked with the risk of hypertensive disorders of pregnancy (HDP), but little is known about the potential effects of exposure to metal mixtures. Thus, our study aimed to investigated the impact of a complex mixture of metals on HDP, especially the interactions among metal mixtures. We did a population-based nested case-control study from October 2013 to October 2016 in Wuhan, China, including 146 HDP cases and 292 controls. Read More

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[Study on the difference of curative effect of conventional mercury displacement treatment on mercury in brain and kidney].

Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022 Apr;40(4):255-259

Department of Occupational Disease and Poisoning Medicine, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing 100020, China.

To explore the expulsion effect of sodium dimercaptopropanesulfonate (DMPS) on mercury in different organs of mercury poisoning and the therapeutic effect of glutathione (GSH) combined with antioxidant therapy on mercury poisoning. In February 2019, 50 SPF male SD rats were randomly divided into 5 groups, 10 rats in each group: A (saline negative control group) , B (HgCL2 positive control group) , treatment group (C: intramuscular injection of DMPS 15 mg/kg treatment, D: intramuscular injection of DMPS30 mg/kg treatment, E: intramuscular injection of DMPS 15 mg/kg and intraperitoneal injection of GSH200 mg/kg treatment) . Rats in group B, C, D and E were subcutaneously injected with mercury chloride solution (1 mg/kg) to establish a rat model of subacute mercury poisoning kidney injury. Read More

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Ultrasensitive and selective determination of mercury in water, beverages and food samples by EDXRF and TXRF using graphene oxide modified with thiosemicarbazide.

Food Chem 2022 May 5;390:133136. Epub 2022 May 5.

University of Silesia, Institute of Chemistry, Szkolna 9, 40-006 Katowice, Poland. Electronic address:

The paper presents novel analytical methods for sensitive mercury determination in various samples, i.e., waters, beverages, seafood, plants, and biological samples. Read More

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Dedication of the STOTEN Special Issue AMAP Assessment 2021: Mercury in the Arctic to Robie W. Macdonald.

Sci Total Environ 2022 May 8;836:155581. Epub 2022 May 8.

Geological Survey of Canada, Natural Resources Canada, Ottawa, ON K1A 0E8, Canada.

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First atmospheric mercury measurements at a coastal site in the Apulia region: seasonal variability and source analysis.

Environ Sci Pollut Res Int 2022 May 11. Epub 2022 May 11.

CNR-Institute of Atmospheric Pollution Research, Rende, Italy.

In the framework of the Italian Special Network for Mercury (ISNM) "Reti Speciali", a sampling campaign to monitor atmospheric mercury (Hg) was carried out at Monte Sant'Angelo (MSA). This is a coastal monitoring station in the Apulia region, representative of the Southern Adriatic area, within the Mediterranean basin. This work presents continuous Gaseous Elemental Mercury (GEM) measurements over about three years at MSA, using the Lumex RA-915AM mercury analyzer. Read More

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Relationship between exposure to cadmium, lead, and mercury and the occurrence of urinary incontinence in women.

Environ Sci Pollut Res Int 2022 May 11. Epub 2022 May 11.

Shanghai Clinical College, Anhui Medical University, Shanghai, 200072, China.

Cadmium, lead, and mercury are nephrotoxic metals that are commonly found as hazardous pollutants in many areas of the USA. We examined the relationship between exposure to cadmium, lead, and mercury with the occurrence of urgency urinary incontinence (UUI) and stress urinary incontinence (SUI) in women. This study was conducted using data on women > 20 years of age, collected between 2005 and 2016, who reported experiencing urinary incontinence in the National Health and Nutrition Examination Survey (NHANES). Read More

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Molecular Fates of Organometallic Mercury in Human Brain.

ACS Chem Neurosci 2022 May 11. Epub 2022 May 11.

Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, Saskatchewan S7N 5B3, Canada.

Mercury is ubiquitous in the environment, with rising levels due to pollution and climate change being a current global concern. Many mercury compounds are notorious for their toxicity, with the potential of organometallic mercury compounds for devastating effects on the structures and functions of the central nervous system being of particular concern. Chronic exposure of human populations to low levels of methylmercury compounds occurs through consumption of fish and other seafood, although the health consequences, if any, from this exposure remain controversial. Read More

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Parental imprisonment as a risk factor for cardiovascular and metabolic disease in adolescent and adult offspring: A prospective Australian birth cohort study.

SSM Popul Health 2022 Jun 28;18:101107. Epub 2022 Apr 28.

School of Criminology and Criminal Justice, Griffith University, 176 Messines Ridge Road, Mount Gravatt, QLD, 4122, Australia.

Objectives: Parental imprisonment is linked with child health in later life. The present study provides the first prospective cohort analysis and non-U.S. Read More

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Black soldier fly (Hermetia illucens) larvae oil as an alternative fat ingredient to soybean oil in laying hen diets.

Anim Biosci 2022 May 7. Epub 2022 May 7.

Animal Nutrition & Physiology Division, National Institute of Animal Science, Rural Development Administration, Wanju-Gun, Korea.

Objective: The objective of this study was to determine whether dietary black soldier fly (Hermetia illucens, HI) larvae oil (HILO) could serve as an alternative fat source to soybean oil (SBO) in laying hen diets.

Methods: We randomly assigned 25-week-old Hy-line Brown laying hens (n = 144) to receive (n = 6 hens/group; eight replicates) a control or an experimental diet in which SBO was replaced with 50% (50HILO) or 100% HILO (100HILO).

Results: Dietary HILO did not negatively affect body weight or productive performance during the study. Read More

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The association between dietary polyphenol intake and cardiometabolic factors in overweight and obese women: a cross-sectional study.

BMC Endocr Disord 2022 May 10;22(1):120. Epub 2022 May 10.

Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), P.O. Box: 14155-6117, Tehran, Iran.

Objective: The previous evidence shows that there is an association between total dietary polyphenols intake (DPI) and its subclasses and lower risk of metabolic Syndrome (MetS). This cross-sectional study aims to evaluate associations between DPI and cardiometabolic factors in Iranian women.

Methods: A total of 404 Iranian women were included in this study. Read More

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Contamination of potentially toxic metals in children's toys marketed in Iran.

Environ Sci Pollut Res Int 2022 May 11. Epub 2022 May 11.

Department of Environmental Health, Food Safety Division, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.

Chemical exposure of heavy metals in children is of particular concern. However, using heavy metal-contaminated toys can threaten the life and well-being of children. Therefore, quality control of toys for avoiding children exposure to potentially toxic metals is important. Read More

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Seasonal trends of mercury bioaccumulation and assessment of toxic effects in Asian clams and microbial community from field study of estuarine sediment.

Environ Res 2022 May 7;212(Pt C):113439. Epub 2022 May 7.

Department of Environmental Engineering, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea. Electronic address:

This study investigated seasonal trends in bioaccumulation potential and toxic effects of mercury (Hg) in Asian clams (Corbicula fluminea) and microbial community. For this, a clam-exposure experiment was performed during summer, fall, and winter seasons in four different sites (HS1: control/clean site; HS2, HS3, and HS4: contaminated sites) of Hyeongsan River estuary, South Korea. Total mercury (THg) and methylmercury (MeHg) in whole sediments were highest at HS4 site during fall, sustained similar levels during winter, but decreased during summer. Read More

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Associations of exposure to metal and metal mixtures with thyroid hormones: Results from the NHANES 2007-2012.

Environ Res 2022 May 7;212(Pt C):113413. Epub 2022 May 7.

Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, Chicago, IL, 60612, USA; Chicago Center for Health and Environment (CACHET), University of Illinois at Chicago, 835 S. Wolcott, Chicago, IL, 60612, USA.

Background: Disrupted thyroid homeostasis plays a role in neurocognitive dysfunction and metabolic disorders. Since individuals are exposed to multiple metals simultaneously, it is important to assess the effects of metal mixtures on thyroid hormone status. This study aimed to investigate the associations of metal mixtures and individual metals with thyroid hormone levels. Read More

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Synthesis, structure and reactivity with phosphines of Hg(II) -cyano-aminothiophenolate complexes formed C-S bond cleavage and dehydrogenation of 2-aminobenzothiazoles.

Dalton Trans 2022 May 10. Epub 2022 May 10.

Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.

Addition of 2-aminobenzothiazole (abt) and substituted derivatives to Hg(OAc) leads to the high yield formation of -cyano-aminothiophenolate (ocap) complexes [Hg{SCHXN(CN)}] (X = H, Me, Cl, Br, NO) resulting from dehydrogenation and C-S bond cleavage. The reaction appears to be unique to Hg(OAc) and with HgCl the product [HgCl(abt)] contains an intact abt ligand, but reacts with acetate to afford the ocap complex [Hg{SCHN(CN)}]. Binding of abt to Hg(II) has previously been probed in molecular structures of [Hg(sac)(abt)L] (L = MeOH, DMSO) and these have been reexamined to understand the perturbation of abt upon coordination. Read More

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