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首页> 外文期刊>Environmental toxicology and chemistry >CAGED MUSSELS AND SEMIPERMEABLE MEMBRANE DEVICES AS INDICATORS OF ORGANIC CONTAMINANT UPTAKE IN DORCHESTER AND DUXBURY BAYS, MASSACHUSETTS
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CAGED MUSSELS AND SEMIPERMEABLE MEMBRANE DEVICES AS INDICATORS OF ORGANIC CONTAMINANT UPTAKE IN DORCHESTER AND DUXBURY BAYS, MASSACHUSETTS

机译：笼养的贻贝和半透膜的设备在马萨诸塞州的多彻斯特和德伯里湾中吸收有机污染物

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An experiment to measure organic contaminant depuration by the blue mussel (Mytilus edulis) was carried out by transplanting mussels in stainless steel cages from a known contaminated site in Dorchester Bay, Massachusetts to a documented clean site in Duxbury Bay, Massachusetts approximately 30 nmi south of the original collection site. A parallel contaminant uptake experiment was performed in which mussels from Duxbury Bay were collected and deployed in similar cages in Dorchester Bay. The bivalves were collected from each transplant site at set intervals over a period of 95 days to monitor the rates and selectivity of depuration and uptake, respectively, of polynuclear aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCB), and chlorinated pesticides. In a related study, semipermeable membrane devices (SPMD: polyethylene bags) containing the lipid material triolein were deployed in Dorchester Bay and collected at the same frequency as the caged mussels to evaluate their effectiveness as models for estimating bioconcentration of target organic contaminants. At the Duxbury site, results suggest that the caged mussels depurated contaminants within 68 days to levels found in native animals at the site. At the Dorchester site, bivalves concentrated the contaminants to a level similar to the native M. edulis. PCB and DDT uptake rates were found to be similar between caged mussels and SPMDs; PAH uptake by the SPMDs was initially lower than by transplanted bivalves. PCB and PAH assemblages were noticeably different between bivalves and SPMDs deployed at the same site.
机译：通过将贻贝从不锈钢笼子中移出，将其从马萨诸塞州多切斯特湾的一个已知污染场地移至马萨诸塞州达克斯伯里湾以南约30海里的有记录的清洁场所，从而进行了一项测量蓝贻贝（Mytilus edulis）净化有机污染物的实验。原始收集站点。进行了平行的污染物吸收实验，其中收集了来自达克斯伯里湾的贻贝，并将其部署在多切斯特湾的类似网箱中。在95天的时间段内以固定的间隔从每个移植位点收集双壳类动物，以分别监测多核芳香烃（PAH），多氯联苯（PCB）和氯化农药的净化和吸收率和选择性。在一项相关研究中，将含有脂质材料油质蛋白的半透膜装置（SPMD：聚乙烯袋）部署在多切斯特湾，并以与笼装贻贝相同的频率进行收集，以评估其作为评估目标有机污染物生物浓度模型的有效性。在达克斯伯里（Duxbury）遗址，结果表明，笼中的贻贝在68天内将污染物净化到该地点的本地动物体内的水平。在多切斯特地区，双壳类动物将污染物浓缩到与原生蓝靛蓝相似的水平。发现网箱贻贝和SPMD之间的PCB和DDT吸收率相似。 SPMD吸收的PAH最初低于移植的双壳类动物。在同一地点部署的双阀和SPMD之间的PCB和PAH组件明显不同。

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