نتایج جستجو برای: methyl mercury

تعداد نتایج: 151191  

Due to hygienic risks of mercury residues in food and marine originated supplements, measuring total mercury and methyl mercury contents of canned tuna as a highly consumable marine food product is essential. In this study, 40 canned Tuna fish (from Persian Gulf) were collected in 2015 and then flame atomic absorption spectrometer (FAAS) and thermo gas chromatography mass spectrophotometry were...

Due to hygienic risks of mercury residues in food and marine originated supplements, measuring total mercury and methyl mercury contents of canned tuna as a highly consumable marine food product is essential. In this study, 40 canned Tuna fish (from Persian Gulf) were collected in 2015 and then flame atomic absorption spectrometer (FAAS) and thermo gas chromatography mass spectrophotometry were...

Journal: :Biochemical and biophysical research communications 1997
T Urano N Imura A Naganuma

The inhibitory effect of sodium selenite on biliary secretion of methyl mercury was examined in rats. The biliary secretion of methyl mercury in rat treated with 1 mumol/kg of methyl mercury was significantly decreased by administration of selenite at doses of 0.05 mumol/kg or higher. In rats given 10 mumol/kg of methyl mercury, marked depression of biliary secretion of mercury was observed whe...

Journal: :Archives of environmental contamination and toxicology 1998
K Kannan R G Smith R F Lee H L Windom P T Heitmuller J M Macauley J K Summers

Concentrations of total mercury and methyl mercury were determined in sediment and fish collected from estuarine waters of Florida to understand their distribution and partitioning. Total mercury concentrations in sediments ranged from 1 to 219 ng/g dry wt. Methyl mercury accounted for, on average, 0.77% of total mercury in sediment. Methyl mercury concentrations were not correlated with total ...

Journal: :Journal of applied toxicology : JAT 2007
Grazyna Zareba Elsa Cernichiari Rieko Hojo Scott Mc Nitt Bernard Weiss Moiz M Mumtaz Dennis E Jones Thomas W Clarkson

Thimerosal, which releases the ethyl mercury radical as the active species, has been used as a preservative in many currently marketed vaccines throughout the world. Because of concerns that its toxicity could be similar to that of methyl mercury, it is no longer incorporated in many vaccines in the United States. There are reasons to believe, however, that the disposition and toxicity of ethyl...

2013
J. Salaramoli N. Salamat Sh. Najafpour J. Hassan

The levels of total mercury and methyl mercury were measured in 40 tuna cans prepared from Persian Gulf tuna, in Tehran, Iran during 2010. The total mercury and methyl mercury concentrations were determined with a GBC 906 AA flame atomic absorption spectrometer (FAAS) and a Thermo gas chromatograph-mass spectrometer (GC-MS), respectively. The results showed that the means of total mercury and m...

Journal: :Environmental Health Perspectives 2004
Kathryn R Mahaffey Robert P Clickner Catherine C Bodurow

Blood organic mercury (i.e., methyl mercury) concentrations among 1,709 women who were participants in the National Health and Nutrition Examination Survey (NHANES) in 1999 and 2000 (1999-2000 NHANES) were 0.6 microg/L at the 50th percentile and ranged from concentrations that were nondetectable (5th percentile) to 6.7 microg/L (95th percentile). Blood organic/methyl mercury reflects methyl mer...

Journal: :Science 1970

Journal: :Bulletin of Environmental Contamination and Toxicology 2009
Zhong Sheng Zhang Dong Mei Zheng Qi Chao Wang Xian Guo Lv

We determined total and methyl mercury contents in soil, three earthworm species and their vomitus to study the species-specific differences of mercury bioconcentration in Huludao City, a heavily polluted region by chlor-alkali and nonferrous metal smelting industry in Liaoning Province, northeast China. Total and methyl mercury contents were 7.20 mg/kg and 6.94 ng/g in soil, 1.43 mg/kg and 43....

Journal: :Archives of environmental contamination and toxicology 2009
Alexander L Bond Antony W Diamond

Seabirds are used frequently as indicators of mercury contamination in marine ecosystems, but few studies have examined the forms of mercury found in seabird tissues. Here we compare concentrations of total and organic mercury in feathers (n=5) of six sympatric nesting seabirds and in egg components of Leach's storm-petrels from Machias Seal Island, New Brunswick, Canada, during the 2006 breedi...

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