SEMIAUTOMATED METHOD FOR THE DETERMINATION OF BISMUTH IN ROCKS

被引：12

作者：

CHAN, CY

BAIG, MWA

PITTS, AE

机构：

[1] Geoscience Laboratories, Ontario Geological Survey, Ministry of Natural Resources, 77 Grenville Street, Toronto

来源：

ANALYTICA CHIMICA ACTA | 1979年 / 111卷 / 01期

关键词：

D O I：

10.1016/S0003-2670(01)93259-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A rapid and accurate method for the determination of bismuth in rock samples is described. Automated equipment is used to generate bismuth hydride from solutions of rock samples prepared by digestion with a mixture of hydrofluoric and perchloric acids. The evolved hydride is carried to a heated quartz tube by a stream of argon, and the atomic absorption of bismuth recorded. Thiosemicarbazide and 1,10-phenanthroline are used as masking agents to minimize interferences from copper and nickel. As little as 20 ng Bi g-1 can be determined; the average r.s.d. is 5.4%. Results obtained for six USGS standard rocks are in close agreement with the recommended values obtained by an isotope dilution technique. © 1979.

引用

页码：169 / 176

页数：8