IMPORTED SEA-BASS AS A SOURCE OF MERCURY EXPOSURE - A WISCONSIN CASE-STUDY

被引:21
作者
KNOBELOCH, LM [1 ]
ZIARNIK, M [1 ]
ANDERSON, HA [1 ]
DODSON, VN [1 ]
机构
[1] UNIV WISCONSIN,HOSP & CLIN,MADISON,WI 53703
关键词
D O I
10.2307/3432438
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The Wisconsin Division of Health investigated mercury exposure in a 40-year-old man, his 42-year-old wife, and their 2.5-year-old son. At the time of our investigation, these individuals had blood mercury levels ranging from 37 to 58 mu g/L (normal <5 mu g/L) and hair samples from the adults contained 10-12 pg mercury/g dry weight. A personal interview and home inspection failed to identify any occupational or household sources of mercury exposure. The family's diet included three to four fish meals per week The fish was purchased from a local market and included Lake Superior whitefish, Lake Superior trout, farm-raised trout and salmon, and imported seabass. Analysis of these fish found that only one species, the imported seabass, contained significant mercury revels. Two samples of the seabass obtained from the vendor on different days contained mercury concentrations of 0.5 and 0.7 mg/kg. Based on consumption estimates, the average daily mercury intakes for these individuals ranged from 0.5 to 0.8 mu g/kg body weight. Six months after the family stopped consuming the seabass, blood mercury levers in this man and woman were 5 and 3 mu g/L, respectively. Analysis of sequential blood samples confirmed that mercury elimination followed first-order kinetics with a half-life of approximately 60 days.
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页码:604 / 606
页数:3
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