نتایج جستجو برای: methyl mercury

تعداد نتایج: 151191  

2005
RUPALI AVASARE

Thimerosal, a mercury-containing preservative used in vaccines, was implicated in 1997 to be linked to autism. Recent in vitro studies suggest that the concentration of thimerosal, and subsequently ethyl mercury, present in vaccines is not cytotoxic. A paucity of studies done specifically with thimerosal has led lawmakers to base regulations on the toxicological profile of methyl mercury. Howev...

Journal: :Journal of clinical hypertension 2011
Mark C Houston

Mercury has a high affinity for sulfhydryl groups, inactivating numerous enzymatic reactions, amino acids, and sulfur-containing antioxidants (N-acetyl-L-cysteine, alpha-lipoic acid, L-glutathione), with subsequent decreased oxidant defense and increased oxidative stress. Mercury binds to metallothionein and substitute for zinc, copper, and other trace metals, reducing the effectiveness of meta...

Journal: :Marine pollution bulletin 2002
A Covaci K Van de Vijver W DeCoen K Das J M Bouquegneau R Blust P Schepens

Urban, B.K. (Eds.), Horizonte 2000, 6. Wolfgang Ostwald Kolloqium der Kolloid-Gesellschaft Forschungszentrum Juelich, Band 9, 1998, p. 110. Kwokal, Z., Branica, M., 2000. Determination of dissolved monomethyl-mercury in saline, estuarine and freshwaters in Croatia. Croat. Chem. Acta 73, 97–109. Kwokal, Z., Branica, M., 2001. Occurrence of dimethylmercury in the polluted part of Ka stela Bay. Ra...

Journal: :British journal of industrial medicine 1964
J C GAGE

The distribution, metabolism, and excretion of phenyl mercury acetate (P.M.A.) and of methyl mercury dicyanidiamide (M.M.D.) has been studied in the rat during the repeated subcutaneous administration of small doses over a period of six weeks, and for several weeks after a single dose. The results indicate that P.M.A. is absorbed unchanged into the circulation from which it is mainly removed by...

Journal: :Journal of environmental monitoring : JEM 2010
Vathiswa Papu-Zamxaka Angela Mathee Trudy Harpham Brendon Barnes Halina Röllin Michal Lyons Wikus Jordaan Marthinus Cloete

Mercury is a persistent heavy metal that has been associated with damage to the central nervous system, including hearing and speech impairment, visual constriction and loss of muscle control. In aquatic environments mercury may be methylated to its most toxic form, methyl-mercury. In 1990 concerns were raised over mercury contamination in the vicinity of a mercury processing plant in KwaZulu-N...

2001
Jin Qian

Qian, J. 2001. Mercury Species in Environmental Samples Studied by Spectroscopic Methods. Doctor k dissertation. ISSN 1401-6230, ISBN 91-576-6085-9. In this thesis, attention is focused on the determination, stability, reaction, and chemical association of mercury species in various types of environmental samples. Capillary gas chromatography (GC) was coupled to a number of systems for mercury ...

2014
Samara Joy Nielsen Brian K Kit Yutaka Aoki Cynthia L Ogden

Background: Seafood is part of a healthy diet, but seafood can also contain methyl mercury—a neurotoxin. Objective: The objective was to describe seafood consumption in US adults and to explore the relation between seafood consumption

Journal: :Analytical and bioanalytical chemistry 2007
Yanmin Yin Jianhua Qiu Limin Yang Qiuquan Wang

A new vapor generation system for mercury (Hg) species based on the irradiation of mercaptoethanol (ME) with UV was developed to provide an effective sample introduction unit for atomic fluorescence spectrometry (AFS). Preliminary investigations of the mechanism of this novel vapor generation system were based on GC-MS and FT-IR studies. Under optimum conditions, the limits of determination for...

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