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Microcoulometric measurement of water in minerals

January 1, 1972

A DuPont Moisture Analyzer is used in a microcoulometric method for determining water in minerals. Certain modifications, which include the heating of the sample outside the instrument, protect the system from acid gases and insure the conversion of all hydrogen to water vapor. Moisture analyzer data are compared to concurrent data obtained by a modified Penfield method. In general, there is a positive bias of from 0.1 to 0.2% in the moisture analyzer results and a similarity of bias in minerals of the same kind. Inhomogeneity, sample size, and moisture pick-up are invoked to explain deviations. The method is particularly applicable to small samples.


Publication Year 1972
Title Microcoulometric measurement of water in minerals
DOI 10.1016/S0003-2670(01)81898-5
Authors M. Cremer, H.N. Elsheimer, E.E. Escher
Publication Type Article
Publication Subtype Journal Article
Series Title Analytica Chimica Acta
Index ID 70009762
Record Source USGS Publications Warehouse