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Determination of fixed water in rocks by infrared absorption

Analytical Chemistry

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Abstract

An infrared absorption technique has been developed for the quantitative determination of "fixed water" (H2O+) in rocks. Potassium bromide disks containing 2-mg samples are scanned in the 3-??m spectral region and absorption at 2.96 ??m is determined. Although the exact nature of this peak is not known, other than that it is caused by an interaction between the potassium bromide and hydroxyl groups and water, it can be used for quantitative analysis. Rock samples, other than those containing significant percentages of clay minerals, can be analyzed with a standard deviation of 0.26%.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Determination of fixed water in rocks by infrared absorption
Series title:
Analytical Chemistry
Volume
41
Issue:
3
Year Published:
1969
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Analytical Chemistry
First page:
506
Last page:
510
Number of Pages:
5