Mercury contamination of the eel (Anguilla anguilla) and roach (Rutilus rutilus) in East Anglia, UK
Mercury contamination of the eel (Anguilla anguilla) and roach (Rutilus rutilus) in East Anglia, UK
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DOI：
10.1023/a:1005930931105
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发表时间：
1999-04-01
影响因子：
3
通讯作者：
Lester, JN
中科院分区：
文献类型：
--
作者：
Edwards, SC;MacLeod, CL;Lester, JN
将来自受汞污染的亚雷河和未受污染的奥姆斯比布罗德河的鳗鱼（Anguilla anguilla）和蟑螂（Rutilus rutilis）的肌肉组织总汞（THg）和有机汞（OrHg）浓度与其各自的河床沉积物 THg 和 OrHg 浓度进行比较，以确定亚雷河中的鱼类是否已开始接近“背景”水平。虽然来自 Yare 的鳗鱼的肉浓度 (260 mu g kg(-1)) 高于 Ormesby Broad 的鳗鱼 (102 mu g kg(-1))，但发现无论地点如何，蟑螂的浓度都相似（Yare 和 Ormesby 分别为 55 和 54 mu g kg(-1)）。然而，亚雷河中的蟑螂体内汞和有机汞的含量显着较高，随着时间的推移（1985-95 年）进行分析，显示出下降趋势，接近奥姆斯比布罗德鱼中观察到的水平，这表明蟑螂是比鳗鱼更好的总体污染生物监测器。也就是说，在奥姆斯比布罗德的鱼中发现的汞含量升高表明存在扩散源，例如东安格利亚地表水域的大气沉积。
The muscle tissue total mercury (THg) and organomercury (OrHg) concentrations of eel (Anguilla anguilla) and roach (Rutilus rutilis) from the Hg-contaminated River Yare and the uncontaminated Ormesby Broad were compared to their respective bed sediment THg and OrHg concentrations in order to determine if fish in the River Yare had begun to approach 'background' levels. While eel from the Yare had higher flesh concentrations (260 mu g kg(-1)) than those from Ormesby Broad (102 mu g kg(-1)), roach were found to have similar concentrations regardless of location (55 and 54 mu g kg(-1) for Yare and Ormesby respectively). However, roach in the Yare had significantly higher body burdens of Hg and organomercury, which when analysed over time (1985-95) showed a decreasing trend approaching the levels observed in fish from Ormesby Broad, suggesting that roach are an overall better biomonitor of contamination then eel. This said, the elevated levels of Hg found in fish from Ormesby Broad indicate the existence of a diffuse source such as atmospheric deposition to the surface waters of East Anglia.