FACTORS CONTROLLING LEAD AVAILABILITY TO THE DEPOSIT-FEEDING BIVALVE MACOMA-BALTHICA IN SULFIDE-RICH OXIC SEDIMENTS

被引：15

作者：

BOURGOIN, BP

RISK, MJ

AITKEN, AE

机构：

[1] MCMASTER UNIV,DEPT GEOL,HAMILTON L8S 4M1,ONTARIO,CANADA

[2] QUEENS UNIV,DEPT GEOG,KINGSTON K7L 3N6,ONTARIO,CANADA

来源：

ESTUARINE COASTAL AND SHELF SCIENCE | 1991年 / 32卷 / 06期

关键词：

LEAD; OXIC; SEDIMENTS; SULFIDE; CONCENTRATE; EXTRACTANT; BIOAVAILABILITY;

D O I：

10.1016/0272-7714(91)90079-Q

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

Tissue lead levels in the deposit-feeding bivalve Macoma balthica have been compared with the physicochemical components of oxic sediments near an ore concentrate stockpile and loading facility. The results indicate that weak acids such as 1N HCl extract a significant portion of the lead from the sulphide fraction and may overestimate its bioavailability in sulphide-rich sediments. Normalizing the extracted lead levels with the total sulphur content in the sediments significantly improved the predictability of lead uptake in the bivalves. © 1991.

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页码：625 / 632

页数：8

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