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循环透析结合火焰原子吸收光谱法对水生系统中铜、铅和镉的形态分析

Speciation of copper, lead and cadmium in aquatic systems by circulating dialysis combined with flame AAS.

作者信息

Novotný K, Turzíková A, Komárek J

机构信息

Department of Analytical Chemistry, Masaryk University, Brno, Czech Republic.

出版信息

Fresenius J Anal Chem. 2000 Jan;366(2):209-12. doi: 10.1007/s002160050041.

DOI:10.1007/s002160050041
PMID:11225930
Abstract

The assessment of free Cu(II), Pb(II) and Cd(II) ions in the presence of complexed species was realised by a circulating dialysis with Cuprophan planar membranes and subsequent quantification by flame atomic absorption spectrometry. The effect of the flow rate, the time of equilibration, pH and the presence of various complexing agents in the donor solutions were studied. The determination of free Cu(II), Pb(II) and Cd(II) ions in the presence of soil humic substances resulted from the above studies.

摘要

通过使用铜氨平面膜进行循环透析，并随后采用火焰原子吸收光谱法进行定量分析，实现了对存在络合物种情况下游离铜（II）、铅（II）和镉（II）离子的评估。研究了流速、平衡时间、pH值以及供体溶液中各种络合剂的存在对其的影响。上述研究得出了在土壤腐殖物质存在的情况下游离铜（II）、铅（II）和镉（II）离子的测定结果。

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