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A Rapid Spectrographic Method for the Determination of Beryllium in Air Dust
Volume 8, Number 2 (May 1954) Page 71-75
Landis, Frank P.; Coons, Mary C.
A method has been developed for the determination of beryllium in air dust samples at the rate of 11 man-minutes per sample. The method involves the use of a small filter paper sample which is inserted into a cupped graphite electrode and arced in a conventional direct current arc. Certain treatments are necessary to ensure optimum excitation of the sample, including the addition of a barium chloride carrier and internal standard. The method is sensitive to .002 microgram of beryllium on the filter paper, and the range of analysis extends to .1 microgram. The accuracy of the method is about ±30% of the amount of beryllium present.