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Simultaneous determination of copper, nickel, lead, cobalt and cadmium by adsorptive voltammetry

✍ Scribed by Zheng-Qi Zhang; Sheng-Zong Chen; Hui-Min Lin; Hong Zhang

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
420 KB
Volume
272
Category
Article
ISSN
0003-2670

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✦ Synopsis

AbStlWt

The synthesis of 1_(2-pyndylaz&2,7-dlhydroxynaphthalene (2,7-PADN) and the electroanalytlcal charactenstlcs of its metal complexes are reported In pH 9 80 buffer solution the complexes of copper, nickel, lead, cobalt and cadmmm v&h 2,7-PADN gwe sensltlve adsorptlon polarographlc waves at -0 35, -0 45, -0 49, -0 60 and -0 67 V, respectwely, which can be used to determme trace amounts of these elements, the detectlon bmlts bemg 8 0,5 0, 2 $0 5 and 5 0 nM, respectively

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## Abstract A sensitive and simple method for the simultaneous preconcentration of nutritionally important minerals in real samples has been reported. The method is based on the adsorption of Cu^2+^, Ni^2+^, Co^2+^ and Pb^2+^ on 4‐propyl‐2‐thiouracil (PUT) loaded on activated carbon. The metals on