SPECIATION OF MERCURY IN DOLPHIN LIVER: A TWO-STAGE MECHANISM FOR THE DEMETHYLATION ACCUMULATION PROCESS AND ROLE OF SELENIUM
作者： F. Palmisano , N. Cardellicchio , P.G. Zambonin
DOI: 10.1016/0141-1136(94)00142-C
关键词:
摘要: Abstract Liver samples of Stenella coeruleoalba dolphins, beached along the Adriatic and Ionian coasts Apulia (southern Italy), have been analysed for their mercury, methyl mercury selenium contents. Clear experimental evidence is provided existence a two-stage mechanism demethylation/accumulation process in dolphin liver, as well threshold Hg level (ca 100 μg Hg/g) above which co-accumulation occurs. Only 1:1 molar ratio observed between fraction not released by an acid hydrolysis step at room temperature. The HCl soluble inorganic compounds such selenite or selenate could be excluded. Different binding sites can hypothesized based on that different amounts metal were recovered depending particular physico-chemical treatment liver sample. probably involves formation HgSe selenocompounds with Se containing residues specific proteins.
elsevier.com
sci-hub.se 参考文章(18)
David Edward Gaskin, The Ecology of Whales and Dolphins ,(1982)
R. Chvojka, R.J. Williams, S. Fredrickson, Methyl mercury, total mercury, and selenium in snapper from two areas of the New South Wales coast, Australia Marine Pollution Bulletin. ,vol. 21, pp. 570- 573 ,(1990) , 10.1016/0025-326X(90)90605-8
H. E. GANTHER, M. L. SUNDE, EFFECT OF TUNA FISH AND SELENIUM ON THE TOXICITY OF METHYLMERCURY: A PROGRESS REPORT Journal of Food Science. ,vol. 39, pp. 1- 5 ,(1974) , 10.1111/J.1365-2621.1974.TB00974.X
J. Andre, A. Boudou, F. Ribeyre, M. Bernhard, Comparative study of mercury accumulation in dolphins (Stenella coeruleoalba) from French Atlantic and Mediterranean coasts. Science of The Total Environment. ,vol. 104, pp. 191- 209 ,(1991) , 10.1016/0048-9697(91)90072-M
Louis W. Chang, Robert Suber, Protective effect of selenium on methylmercury toxicity: A possible mechanism Bulletin of Environmental Contamination and Toxicology. ,vol. 29, pp. 285- 289 ,(1982) , 10.1007/BF01706230
L. KOSTA, A. R. BYRNE, V. ZELENKO, Correlation between selenium and mercury in man following exposure to inorganic mercury Nature. ,vol. 254, pp. 238- 239 ,(1975) , 10.1038/254238A0
Kazuomi ITANO, Shin''iehiro KAWAI, Nobuyuki MIYAZAKI, Ryo TATSUKAWA, Toraya FUJIYAMA, Mercury and Selenium Levels in Striped Dolphins Caught off the Pacific Coast of Japan Agricultural and biological chemistry. ,vol. 48, pp. 1109- 1116 ,(1984) , 10.1271/BBB1961.48.1109
JM Lyle, Mercury and Selenium Concentrations in Sharks from Northern Australian Waters Marine and Freshwater Research. ,vol. 37, pp. 309- 321 ,(1986) , 10.1071/MF9860309
W Maher, S Baldwin, M Deaker, M Lrving, Characteristics of selenium in Australian marine biota Applied Organometallic Chemistry. ,vol. 6, pp. 103- 112 ,(1992) , 10.1002/AOC.590060203
F. Palmisano, P. G. Zambonin, N. Cardellicchio, Speciation and simultaneous determination of mercury species in dolphin liver by liquid chromatography with on-line cold vapor atomic absorption spectrometry Fresenius Journal of Analytical Chemistry. ,vol. 346, pp. 648- 652 ,(1993) , 10.1007/BF00321264