Accumulation of polycyclic aromatic hydrocarbons in semipermeable membrane devices and caged mussels (Mytilus edulis L.) in relation to water column phase distribution

被引:67
作者
Axelman, J [1 ]
Næs, K
Näf, C
Broman, D
机构
[1] Stockholm Univ, Inst Appl Environm Res, S-10691 Stockholm, Sweden
[2] Norwegian Inst Water Res, So Branch, N-4890 Grimstad, Norway
关键词
polycyclic aromatic hydrocarbons; semipermeable membrane devices; Mytilus edulis; bioconcentration factors;
D O I
10.1002/etc.5620181111
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Semipermeable membrane devices (SPMDs) and blue mussels (Mytilus edulis L.) were deployed at a site contaminated by discharges of polycyclic aromatic hydrocarbons (PAHs) from an aluminium reduction plant. and at a reference site, The accumulation of PAHs in SPMDs versus mussels, along with the ability of the two matrices to predict contaminant concentrations in the ambient environment, were evaluated through concurrent measurements of particulate, dissolved, and colloidal PAHs in the water column. Analysis of the results showed that blue mussels were more efficient at sequestering PAHs than were SPMDs. The PAH profile (i.e., the relative abundance of individual PAHs) in the two matrices were similar, but differed significantly from the profile in the dissolved phase. Further, back-calculation of the ambient dissolved concentrations from SPMDs indicated systematic overtrapping with increasing hydrophobicity. Calculation of in situ bioconcentration factors (BCFs) for the blue mussels at the smelter site indicated that uptake via particles (>0.7 mu m) or from colloids dominated over direct uptake from the dissolved phase, as opposed to the reference site. The in situ BCFs differed markedly from literature values, which implies that the use of mussels to predict ambient concentrations would require that site-specific BCFs be applied.
引用
收藏
页码:2454 / 2461
页数:8
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