Impact of humic substances on the aqueous solubility, uptake and bioaccumulation of platinum, palladium and rhodium in exposure studies with Dreissena polymorpha.
Impact of humic substances on the aqueous solubility, uptake and bioaccumulation of platinum, palladium and rhodium in exposure studies with Dreissena polymorpha.
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DOI：
10.1016/j.envpol.2006.07.004
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发表时间：
2007-03
影响因子：
8.9
通讯作者：
B. Sures;S. Zimmermann
中科院分区：
文献类型：
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作者：
B. Sures;S. Zimmermann
将斑马贻贝（Dreissena polymorpha）暴露于不同类型含PGE盐（PtCl4、PdSO4、RhCl3）的水中，研究腐殖物质对其水溶性、贵金属吸收和生物积累的影响。结果显示，各组水箱水中PGE浓度随时间降低。这可能主要与非生物过程有关。Pd和Rh在腐殖质水中的溶解度高于未氯化自来水，而Pt则相反。Pd的金属吸收率最高，生物蓄积平台最高，其次是Pt和Rh。腐殖质的存在明显阻碍了镉的吸收和生物积累，而腐殖质的存在似乎增加了镉的吸收和生物积累。Rh没有明显的趋势。腐殖物质在PGE中的作用差异可能是由腐殖物质的不同组分形成的金属配合物来解释的。
Zebra mussels (Dreissena polymorpha) were exposed to different types of water containing PGE salts (PtCl4, PdSO4, RhCl3) to investigate the influence of humic substances on the aqueous solubility, uptake and bioaccumulation of noble metals. The results showed a time dependent decrease of the aqueous PGE concentrations in tank water for all groups. This could mainly be related to non-biological processes. The aqueous solubility of Pd and Rh was higher in humic water compared with non-chlorinated tap water, whereas Pt showed opposing results. Highest metal uptake rates and highest bioaccumulation plateaus were found for Pd, followed by Pt and Rh. Pd uptake and bioaccumulation was significantly hampered by humic substances, whose presence appear to increase Pt uptake and bioaccumulation. No clear trend emerged for Rh. Differences in effects of humic matter among the PGE may be explained by formation of metal complexes with different fractions of humic substances.