The conditions for the differential-pulse polarographic determination of trace heavy elements in a coal have been investigated. By means of polarograms taken at two different pHs of a solution of 0.5 M EDTA + 0.5 M sodium acetate, it has been shown that Fe, Cu, Pb, Cd, Ti, Sb, Mo, As and Zn could be determined in coal, a complex matrix, within a reasonably short time.
G. Somer, O. Çakir and A. O. Solak, Analyst, 1984, 109, 135 DOI: 10.1039/AN9840900135
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