A simple decomposition and chelating resin separation for the determination of heavy metals in silicates by atomic absorption spectrometry
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説明
Abstract A simple method for the determination of copper, nickel, zinc, and cadmium in silicate rock samples is reported. Silicates are decomposed with hydrofluoric acid and aqua regia in a sealed Teflon vessel. After centrifugation and addition of malonic acid, the supernatant liquid is passed through a small column of Chelex 100. The metals are eluted with 2 M nitric acid, and determined by atomic absorption spectrometry. The method is rapid, simple, and free from contamination. The results obtained for 14 standard reference rock samples (USGS, GSJ, and CSRM) agree with literature data; the recovery, reproducibility, and accuracy of the proposed method are satisfactory.
収録刊行物
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- Analytica Chimica Acta
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Analytica Chimica Acta 94 275-281, 1977-12-01
Elsevier BV