Heavy metal and other trace elements in native mussel Diplodon chilensis from Northern Patagonia Lakes, Argentina
Heavy metal and other trace elements in native mussel Diplodon chilensis from Northern Patagonia Lakes, Argentina
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DOI：
10.1385/bter:102:1-3:245
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发表时间：
2004-12-01
影响因子：
3.9
通讯作者：
Arribére, M
中科院分区：
文献类型：
--
作者：
Guevara, SR;Bubach, D;Arribére, M
本地贻贝，Diplodon chilensis，采样四湖在Nahuel Huapi国家公园，北方巴塔哥尼亚，阿根廷，以评估重金属在该地区的分布，并评估其在食物链中循环的营养网的这一部分的贡献。测定了智利重齿龙混合样品中潜在污染物Ag、As、Cr、Hg、Sb和Se以及其他九种感兴趣元素（Ba、Br、Ca、Co、Cs、Fe、Na、Sr和Zn）的浓度。消化腺与软组织分开分析。地质示踪剂Sc，Ta，Th和稀土元素也进行了测定，以区分亲石贡献。Ba、Br、Fe、Sr、Se、Zn等元素在软土样品中的含量在不同采样点间差异不显著。总软组织和消化腺混合样品中砷和铬含量在靠近人类聚居区的采样点较高。在纳韦勒瓦皮湖采集的样本中的银含量高于所研究的其他湖泊，比作为参考的特拉富尔湖采集的样本高出50倍。汞最高浓度值测量总软组织汇集样本湖泊。Nahuet Huapi和Moreno被发现与这些相似。在其他报告的汞污染情况中观察到，它们比在特拉富尔湖收集的参考样品高出三到五倍。
Native mussels, Diplodon chilensis, were sampled from four lakes in Nahuel Huapi National Park, Northern Patagonia, Argentina in order to evaluate heavy-metal distribution in the region and to assess the contribution of this compartment of the trophic web to their circulation in the food chain. The concentration of potential pollutants Ag, As, Cr, Hg, Sb, and Se, and other nine elements of interest (Ba, Br, Ca, Co, Cs, Fe, Na, Sr, and Zn) were determined in Diplodon chilensis pooled samples. Digestive glands were analyzed separately from soft tissues. Geological tracers Sc, Ta, Th, and rare earth elements were also determined in order to discriminate lithophile contributions. Elemental concentrations of Ba, Br, Fe, Sr, Se, and Zn in total soft samples do not show significant differences among sampling sites. Arsenic and Cr contents in total soft tissues and digestive gland pooled samples are higher in sampling points close to zones with human settlements. Silver contents in samples collected in Lake Nahuel Huapi were higher than in the other lakes studied, and up to 50-fold higher than the sample collected in Lake Traful, considered as the reference. Mercury highest concentration values measured in total soft tissues pooled samples from lakes. Nahuet Huapi and Moreno were found to be similar to those. Observed in other reported Hg contamination situations, and they are three to five times higher than those of the reference samples collected in Lake Traful.