Thallium contents of 16 USGS standard rocks

Journal of Research of the U.S. Geological Survey
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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 F0.975 and only GSP-1 may be considered heterogeneous at F0.95. The Tl contents of G-1 and W-1 are 1.0 and 0.12 ppm, respectively.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Thallium contents of 16 USGS standard rocks
Series title Journal of Research of the U.S. Geological Survey
Volume 5
Issue 5
Year Published 1977
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Description 3 p.
First page 579
Last page 581
Online Only (Y/N) N
Additional Online Files (Y/N) N
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