期刊
ENVIRONMENTAL POLLUTION
卷 156, 期 3, 页码 1314-1324出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2008.03.001
关键词
Hyalella azteca; 27 Metals; Se; Biomonitor; BCF
Specimens of the amphipod Hyalella azteca were deployed, in June-July 2003, along metal contamination gradients in two rivers affected by metal mining in the Abitibi - James Bay region, northwestern Quebec. The amphipods were placed along with natural food items in small, acrylic cages and left in six riverine sites for 17 days. Twelve metals (As, Cu, La, Mn, Ni, Sb, Se, TI, U. V, Zn, and CrO(4)(2-) modelled by WHAM VI) in transplanted H. azteca varied along metal contamination gradients in a consistent manner, i.e., as a function of metal exposure. Bioaccumulation of As, Cr, La, Ni, Sb, Se, Tl, U and V, as defined by a field BCF, was significantly correlated with their chronic toxicity potential towards the amphipod. We conclude, that H. azteca may be a useful field biomonitor for metal mining. In addition, our results suggest that such biomonitoring programs should include less studied elements such as Se in mining effluents. (C) 2008 Elsevier Ltd. All rights reserved.
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