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The selenium content of U.S.G.S. standard rocks

M. M. Schnepfe·F.J. Flanagan
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Abstract

Selenium was determined in duplicate portions from three bottles of six U.S.G.S. standard rocks by a spect rofluorimetric procedure. The following averages, as p.p.m. Se, were obtained: PCC-1, 0.031; GSP-1, 0.088; BCR-1, 0.12; SCo-1, 0.91; MAG-1, 1.3; and SGR-1, 3.7. One-way analysis of variance of the several sets of data showed no significant differences in the selenium content among bottles of any specific rock; these samples may be accepted as homogeneous for their selenium contents by this analytical method.

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M. M. Schnepfe, F.J. Flanagan. 1973. The selenium content of U.S.G.S. standard rocks. https://doi.org/10.1016/0009-2541(73)90030-2

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