作者
Helena do Amaral Kehrig, Olaf Malm, Hirokatsu Akagi, Jean RD Guimarães, João Paulo M Torres
发表日期
1998/5/1
期刊
Environmental Research
卷号
77
期号
2
页码范围
84-90
出版商
Academic Press
简介
The present study aimed to evaluate methylmercury in fish and human hair samples from an important hydroelectrical reservoir, Balbina (Brazil, Amazon). It presents a quite intense fishing activity and there is no known goldmining activity in its watershed. Fish and human hair were analyzed with a new extraction technique and measured by GC-ECD. Analytical quality was checked through intercomparisons between two laboratories with local samples and certified standards from IAEA. Methylmercury in hair ranged from 2.0 to 21.6 μg · g−1with a mean of 8.76±5.20 μg · g−1(N=20), while the methylmercury percentages were above 90. Fish presented methylmercury levels ranging from 0.03 to 0.9 μg · g−1wet wt with a mean of 0.24±0.18 μg · g−1wet wt (N=32), which is below the limit established for food by Brazilian legislation (0.5 μg · g−1wet wt) and methylmercury mean percentages were above 95%. The total …
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