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Evaluation of Methods for Determining Nahcolite and Dawsonite in Oil Shales.
Huggins-CW; Green-TE; Turner-TL
NTIS: PB 223 786 :21 pages
To determine the nahcolite and dawsonite content in oil shales, the Bureau of Mines compared x-ray diffraction, infrared spectroscopy, thermal methods, and a previously published method by smith and young based on the selective solubility of sodium compounds. The smith and young method and a new method based on the weight of carbon dioxide produced by thermal decomposition are recommended for determining nahcolite. X-ray diffraction and the smith and young method are recommended for determining dawsonite. X-ray diffraction, infrared spectroscopy, and differential thermal analysis were useful for identifying other minerals in the samples.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 223 786
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division