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Simultaneous adsorptive stripping voltammetric measurements of trace chromium, uranium, and iron in the presence of cupferron
Author(s) -
Wang Joseph,
Lu Jianmin,
Luo Denbai,
Wang Jianyan,
Tian Baomin
Publication year - 1997
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140091606
Subject(s) - stripping (fiber) , chromium , adsorption , chemistry , uranium , adsorptive stripping voltammetry , metal , resolution (logic) , trace metal , anodic stripping voltammetry , analytical chemistry (journal) , voltammetry , inorganic chemistry , environmental chemistry , materials science , electrode , electrochemistry , metallurgy , organic chemistry , composite material , artificial intelligence , computer science
The ligand cupferron is used for the simultaneous adsorptive stripping voltammetric measurements of several trace metals. Experimental variables affecting such multielement capability, including the cupferron concentration, adsorption time or metal concentration are explored. Adequate resolution is demonstrated for up to five metals (Fe III , U VI , Cr VI , V V , and Bi III ), present at the ppb concentration level. Possible changes in peak heights, associated with competition for the complexing ligand and/or coadsorption effects, are explored. Different concentration ratios of the mixture components can be tolerated. Applicability to groundwater or river‐water samples is illustrated.