Ultraselective and Sensitive Determination of Cr(VI) in the Presence of a High Excess of Cr(III) in Natural Waters with a Complicated Matrix | Zendy

Grabarczyk Malgorzata | Zendy

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Ultraselective and Sensitive Determination of Cr(VI) in the Presence of a High Excess of Cr(III) in Natural Waters with a Complicated Matrix

Author(s) -

Grabarczyk Malgorzata

Publication year - 2008

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.200704199

Subject(s) - detection limit , chemistry , stripping (fiber) , matrix (chemical analysis) , humic acid , adsorptive stripping voltammetry , catalysis , voltammetry , environmental chemistry , nuclear chemistry , chromatography , materials science , electrochemistry , electrode , organic chemistry , fertilizer , composite material

In the present work, the catalytic adsorptive stripping voltammetric procedure for trace determination of Cr(VI) in the presence of a high excess of Cr(III) in natural waters with a complicated matrix has been developed. The influence from potentially interfering substances such as organic matter was successfully eliminated by exploiting adsorptive properties of polymeric resin. The detection limit estimated from 3 times the standard deviation for a low Cr(VI) concentration in the simultaneous presence of a 2×10 3 fold excess of Cr(III), 50 mg L −1 surfactants, 50 mg L −1 humic substances and the accumulation time of 30 s was about 5.3×10 −10 mol L −1 .

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