TY - JOUR
T1 - Simultaneous determination of zinc, cadmium and lead in manganese sulphate electrolyte by differential-pulse anodic-stripping voltammetry
AU - Adeloju, Samuel B.
AU - Tran, Tarn
PY - 1986/1/1
Y1 - 1986/1/1
N2 - Conditions are described for the direct simultaneous determination of zinc, cadmium and lead in process manganese sulphate electrolyte by differential-pulse anodic-stripping voltammetry. The suitability of the technique in this medium is influenced by the solution pH, scan rate and pulse height. Reliable determinations of the elements are accomplished in the concentrated electrolyte at pH 4.1 with a scan rate of 8 mV s-1 and a pulse height of 50 mV. Under these conditions, the limits of detection with a deposition time of 30 min are 0.05, 0.03 and 0.10 μg l-1 for the three elements, respectively. The precision of the method is also satisfactory with relative standard deviations of 0.8, 1.5 and 1.2% for zinc, cadmium and lead, respectively, with 10 samples at the 1 μg l-1 level. However, the high manganese sulphate background is inadequate for copper determination at concentrations less than 50 μg l-1.
AB - Conditions are described for the direct simultaneous determination of zinc, cadmium and lead in process manganese sulphate electrolyte by differential-pulse anodic-stripping voltammetry. The suitability of the technique in this medium is influenced by the solution pH, scan rate and pulse height. Reliable determinations of the elements are accomplished in the concentrated electrolyte at pH 4.1 with a scan rate of 8 mV s-1 and a pulse height of 50 mV. Under these conditions, the limits of detection with a deposition time of 30 min are 0.05, 0.03 and 0.10 μg l-1 for the three elements, respectively. The precision of the method is also satisfactory with relative standard deviations of 0.8, 1.5 and 1.2% for zinc, cadmium and lead, respectively, with 10 samples at the 1 μg l-1 level. However, the high manganese sulphate background is inadequate for copper determination at concentrations less than 50 μg l-1.
KW - Anodic-stripping voltammetry
KW - Cadmium determination
KW - Lead determination
KW - Manganese sulphate electrolyte
KW - Zinc determination
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U2 - 10.1039/AN9861101355
DO - 10.1039/AN9861101355
M3 - Article
AN - SCOPUS:37049069798
VL - 111
SP - 1355
EP - 1358
JO - Analytical Communications
JF - Analytical Communications
SN - 0003-2654
IS - 12
ER -