Thallium contents of 16 USGS standard rocks

F.O. Simon; E.Y. Campbell; P. J. Aruscavage

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USGS · 70163073

Thallium contents of 16 USGS standard rocks

F.O. Simon·E.Y. Campbell·P. J. Aruscavage

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Abstract

Thallium was determined in 16 USGS standard rocks by atomic absorption spectroscopy in which a heated graphite atomizer was used after extraction as thallium iodide into amyl acetate. Four subsamples from four bottles of each standard sample, except G-1 and W-1, were analyzed in random order, and the average thallium contents in parts per million (as Tl) were AGV-1, 0.41; GSP-1, 1.63; G-2, 1.08; BCR-1, 0.35; SDC-1, 0.80; MAG-1, 0.79; BHVO-1, 0.049; SCO-1, 0.79; SGR-1, 0.34; QLO-1, 0.23; RGM-1, 1.07 ; STM-1, 0.30; DTS-1, <0.005; and PCC-1, <0.005. The analysis of variance showed that all samples may be considered homogeneous at F 0.975 and only GSP-1 may be considered heterogeneous at F 0.95 . The Tl contents of G-1 and W-1 are 1.0 and 0.12 ppm, respectively.

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F.O. Simon, E.Y. Campbell, P. J. Aruscavage. 1977. Thallium contents of 16 USGS standard rocks. https://pubs.usgs.gov/publication/70163073

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