Preconcentration and Determination of Cadmium and Lead by Ion-Pair Solid Phase Extraction on Silica Gel Followed by Flame Atomic Absorption Spectrometry
- 1 January 1995
- journal article
- Published by Institute of Organic Chemistry & Biochemistry in Collection of Czechoslovak Chemical Communications
- Vol. 60 (1) , 76-84
- https://doi.org/10.1135/cccc19950076
Abstract
The ion-pair formation between the metal complex with 4-(4'-nitrophenylazo)-1-naphthol and cetyltrimethylammonium bromide and its sorption on silica gel form the basis for preconcentration of cadmium and lead, which are subsequently determined on-line by flame AAS. The method was applied to the quantitation of cadmium and lead in potable and surface waters, with limits of determination (10s) of 0.5 and 2 μg l-1, respectively.Keywords
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