Abstract
Sulfur and phosphorus were evaluated by a mathematical treatment of the specific activities, expressed as /sup 32/P, of analyzed materials and of standards after a double irradiation with and without cadmium protection of the targets. After demineralization of the sample by treatment with acid and evaporation of the whole solution to dryness, phosphorus was extracted with ether containing 5% sulfuric acid, and then precipitated as ammonium magnesium phosphate followed by a beta count of /sup 32/P. Numerical data were obtained for American and Greek papers and for beers of different types and origin. The sensitivity of this method reaches the value of 10/sup -3/ ppm for sulfur and phosphorus determinations. (auth)
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