Results 141 to 150 of about 6,526 (189)

Measurement of Complexation of Methylmercury(II) Compounds by Freshwater Humic Substances Using Equilibrium Dialysis

Environmental Science & Technology, 1997
Humic and fulvic acids from lakes in Ontario, Canada, have been isolated and been examined for their ability to bind methylmercury(II). Equilibrium dialysis has been applied to differentiate between bound and unbound fractions of MeHg(II). Losses of methylmercury(II) from solutions containing 0.5−100 ng/L MeHg(II) and 10 mg/L humic substances (HS) are ...
Holger Hintelmann, Pamela M. Welbourn, R. Douglas Evans   +2 more
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Estimating carbon—mercury bond ionisation constants from PMR spectra of methylmercury compounds

Journal of Organometallic Chemistry, 1974
Abstract Analysis of J ( 199 HgCH 3 ) spin coupling constants in PMR spectra of CH 3 HgX (where X is a carbanion) shows that the affinity of various X groups for the methylmercury cation is linearly dependent on the acidity of the respective CH-acids XH.
K. P. Butin, I. P. Beletskaya, O. A. Reutov   +2 more
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Antioxidant compounds and Ca²⁺ pathway blockers differentially protect against methylmercury and mercuric chloride neurotoxicity

Journal of Neuroscience Research, 2001
AbstractThe effects of the environmental contaminants methylmercury (MeHg) and inorganic mercury (HgCl2) on cell viability, intracellular calcium concentration ([Ca2+]i), and reactive oxygen species (ROS) generation were studied in rat cerebellar granule neuron cultures using fluorescent methods. MeHg exhibited an LC50 (2.47 μM) tenfold lower than that
Sergi Gassó, Rosa Cristòfol, Gema Selema, Roser Rosa, Eduard Rodrı́guez-Farré, Coral Sanfeliu   +5 more
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Interaction of methylmercury compounds with albumin

Archives of Toxicology, 1990
The nature of interaction between bovine serum albumin (BSA) and methylmercurial compounds has been investigated by ultrafiltration analysis. Four types of BSA samples, mercaptalbumin, its mixed disulfides with glutathione (GSH) and L-cysteine (CySH), and S-carbamidomethylated derivative, were used for binding assays with methylmercury (MM) chloride ...
A, Yasutake, K, Hirayama, M, Inoue
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Lipophilic compounds in garlic decrease the toxicity of methylmercury by forming sulfur adducts

Food and Chemical Toxicology, 2021
Garlic (Allium sativum L.) contains numerous sulfur compounds. We have previously found that reactive sulfur species such as glutathione persulfide, glutathione polysulfide, protein-bound persulfides, and hydrogen sulfide can bind to methylmercury to give bismethylmercury sulfide, which is less toxic than methylmercury.
Yumi Abiko, Yusuke Katayama, Masahiro Akiyama, Yoshito Kumagai   +3 more
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Molecular activation analysis for methylmercury compounds

Journal of the Chemical Society, Chemical Communications, 1974
The use of neutron activation analysis for the selective determination of mercury in various mercury compounds is described as well as the application of this technique to the determination of methylmercury in fish tissue.
I. G. deJong, T. Omori, D. R. Wiles
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Compound specific stable isotope determination of methylmercury in contaminated soil

Science of The Total Environment, 2018
Rice is one of the main sources of methylmercury (MeHg) to humans, and soil is the main source of MeHg to rice grains. Determining the Hg isotope composition in environmental samples is a good way of characterizing sources of Hg pollution and investigating environmental processes.
Chongyang Qin, Min Chen, Haiyu Yan, Lihai Shang, Heng Yao, Ping Li, Xinbin Feng   +6 more
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A REVIEW OF DOSE–RESPONSE RELATIONSHIPS RESULTING FROM HUMAN EXPOSURE TO METHYLMERCURY COMPOUNDS

, 1975
T. W. Clarkson, John C. Smith, D O Marsh, Michael D. Turner   +3 more
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Topics in environmental and marine chemistry. Trace mercury and methylmercury compounds in fish

Proceedings of the Analytical Division of the Chemical Society, 1978
H. Egan
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Biosynthesis of Methylmercury Compounds by the Intestinal Flora of the Rat

Archives of Environmental Health: An International Journal, 1977
The contents of the rat cecum and, to a lesser extent, those of the small intestine, synthesized methylmercury from mercuric chloride labeled with Hg 203 in vitro under aerobic or anaerobic conditions. The rate of formation was approximately 18 ng/g cecal contents/20 hr.
I, Rowland, M, Davies, P, Grasso
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