Atomic absorption spectrometric determination of copper, zinc, and lead in geological materials
An atomic absorption spectrometric method is described for the determination of copper, zinc, and lead in geological materials. The sample is digested with HF—HCl—H2O2; the final solution for analysis is in 10 % (v/v) HCl. Copper and zinc are determined directly by aspirating the solution into an air—acetylene flame. A separate aliquot of the solution is used for determination of lead; lead is extracted into TOPO-MIBK from the acidic solution in the presence of iodide and ascorbic acid. For a 0.50-g sample, the limits of determination are 10–2000 p.p.m. for Cu and Zn, and 5–5000 p.p.m. for Pb. As much as 40 % Fe or Ca. and 10 % Al, Mg, or Mn in the sample do not interfere. The proposed method can be applied to the determination of copper, zinc, and lead in a wide range of geological materials including iron- and manganese-rich, calcareous and carbonate samples.
Citation Information
Publication Year | 1976 |
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Title | Atomic absorption spectrometric determination of copper, zinc, and lead in geological materials |
DOI | 10.1016/S0003-2670(01)83030-0 |
Authors | R.F. Sanzolone, T. T. Chao |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Analytica Chimica Acta |
Index ID | 70010914 |
Record Source | USGS Publications Warehouse |