Results 171 to 180 of about 15,964 (226)

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
openaire   +2 more sources

Force constants of methylmercury(II) compounds

Journal of Organometallic Chemistry, 1978
The results of force constant calculations of systems Hg(CH3)X = CH3, Cl, Br, I, CN, SCH3 and {As(CH3)3}+) are briefly reviewed and the importance of data compatibility in comparative studies is stressed. Aspects of relationships between the force constants and other physical properties are discussed, but outside the limited series X = Cl, Br or I do ...
J. Mink, P.L. Goggin
openaire   +1 more source

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
openaire   +1 more source

Binding of Methylmercury Compounds by Humic and Fulvic Acids

Water, Air, & Soil Pollution, 1995
Humic and fulvic acids were isolated from Fawn Lake in Ontario and investigated by membrane dialysis for their ability to bind CH3Hg+. By measuring the distribution of methylmercury compounds in and outside of the dialysis membrane, for the first time, binding capacities and conditional stability constants for CH3Hg+ and humic acids could be calculated.
H. Hintelmann, P. M. Welbourn, R. D. Evans   +2 more
openaire   +1 more source

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
openaire   +2 more sources

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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Simultaneous determination of inorganic mercury and methylmercury compounds in natural waters

Analytical and Bioanalytical Chemistry, 2002
The purpose of the present work was to develop a simple, rapid, sensitive and accurate method for the simultaneous determination of inorganic mercury (Hg(2+)) and monomethylmercury compounds (MeHg) in natural water samples at the pg L(-1) level. The method is based on the simultaneous extraction of MeHg and Hg(2+)dithizonates into an organic solvent ...
Martina, Logar, Milena, Horvat, Hirokatsu, Akagi, Boris, Pihlar   +3 more
openaire   +2 more sources

Structure and Dynamics in a Bis(perfluoroalkyl)triazapentadiene Methylmercury Compound

Organometallics, 2004
The compound [Ph2N3C2(C3F7)2]HgCH3 was synthesized from Na[Ph2N3C2(C3F7)2] and CH3HgCl. In solution, it exists as a mixture of two isomers that interconvert slowly on the NMR time scale. Both isomers feature a η1-Ph2N3C2(C3F7)2 ligand. In the asymmetrical one, the CH3Hg group is bonded to one of the two terminal nitrogen atoms.
A. R. Siedle, Robert J. Webb, Myles Brostrom, Richard A. Newmark, Fred E. Behr, Victor G. Young   +5 more
openaire   +1 more source

Mercury-proton spin-spin coupling constants of some methylmercury compounds

Journal of Organometallic Chemistry, 1973
Abstract The 199 Hg 1 H spin-spin coupling constants for methylmercury salts of 36 organic acids, CH 3 HgX (where X = OR − , SR − or OOCR − , were determined. A linear relationship between the coupling constants and the p K 's of the monobasic parent acids was found. The magnitudes of the coupling constants are dependent on the type of basic site,
Louis F. Sytsma, Robert J. Kline
openaire   +1 more source

Volatilization of mercury compounds by methylmercury-volatilizing bacteria in Minamata Bay sediment

Bulletin of Environmental Contamination and Toxicology, 1988
Minamata Bay has been heavily polluted by high mercury concentrations which gave rise for a long time to methylmercury poisoning, Minamata disease (Kutsuna 1968; Irukayama 1977). The mercury still exists in the sediments of the Bay. The population of mercury-resistant bacteria in the sediments of Minamata Bay is larger than that in the sediments of ...
K, Nakamura, T, Sakata, H, Nakahara
openaire   +2 more sources