Abstract
The methods used at the National Bureau of Standards in the analysis of the two Standard Samples of Phosphate Rock, 56a and 120, are described, and a summary of the results obtained by nine cooperating analysts is given. The usual chemical analysis is supplemented by a qualitative spectrochemical examination , and one constituent, boric oxide, has been quantitatively determined by chemical and spectrochemical methods.
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CITATION STYLE
APA
Hoffman, J. I., & Lundell, G. E. F. (1938). Analysis of phosphate rock. Journal of Research of the National Bureau of Standards, 20(5), 607. https://doi.org/10.6028/jres.020.016
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