Lead Concentrations in Fish and River Sediments in the Old Lead Belt of Missouri
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- 作者：Nord L. Gale ; Craig D. Adams ; Bobby G. Wixson ; Keith A. Loftin ; and Yue-Wern Huang
- 刊名：Environmental Science & Technology
- 出版年：2002
- 出版时间：October 15, 2002
- 年：2002
- 卷：36
- 期：20
- 页码：4262 - 4268
- 全文大小：200K
- 年卷期：v.36,no.20(October 15, 2002)
- ISSN：1520-5851
文摘
Although active mining activities in the Old Lead Belt ofMissouri ceased in 1968, old tailings piles remain and continueto impact the lead (Pb) concentrations in sediments andfish in the Big River and Flat River Creek in Missouri. A 3-yearstudy was conducted that examined the Pb concentrationsin organic-rich sediments, fish fillets, and fish wholebodies at 13 sites in these two rivers. The results showedthat the sediments had significantly elevated Pb concentrations near and beyond the tailings piles compared withcontrol sites upstream from the mining activity. Theresults also showed the Pb concentration in sedimentscorrelated well with Pb concentrations in suckers (r = 0.86,p < 0.0001) and small sunfish (r = 0.82, p < 0.0001).Annual average Pb concentrations in sucker fillets rangedup to 0.67 
g/g (wet weight basis) and exceeded theWorld Health Organization guidelines of 0.3 g/g (wet weightbasis) at many of the sample sites. Fillets of bass, whichfeed at a higher trophic level, had much lower Pbconcentrations than either suckers or small sunfish, andno bass fillet samples exceeded the WHO guideline. Wholebody Pb concentrations in small sunfish were alsodetermined and correlated strongly (r = 0.92, p = 0.0004)with sediment concentrations before leveling at amaximum of approximately 20 g/g (wet weight basis).
g/g (wet weight basis) and exceeded theWorld Health Organization guidelines of 0.3 g/g (wet weightbasis) at many of the sample sites. Fillets of bass, whichfeed at a higher trophic level, had much lower Pbconcentrations than either suckers or small sunfish, andno bass fillet samples exceeded the WHO guideline. Wholebody Pb concentrations in small sunfish were alsodetermined and correlated strongly (r = 0.92, p = 0.0004)with sediment concentrations before leveling at amaximum of approximately 20 g/g (wet weight basis).