Abstract
Experimental work was carried out in order to determine inorganic impurities in PVC latex by activation analysis. Arsenic and bromine were detected and quantitatively determined by means of two alternative methods: (a) comparison of the samples and As2O3 and KBr standard simultaneously irradiated with slow neutrons; (b) the same as (a), but considering only bromine and using standards made by adding and homogenizing known amounts of KBr in the PVC latex. All measurements were based on γ-spectrometry. The mean values given by method (a) are: arsenic (2.5±0.4)·10−4%, bromine (1.9±0.1)·10−3%. In method (b) the bromine found was (2.47±0.03)·10−3%.
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References
F. Bunus, S. Murgulescu, unpublished results.
W. Seelmann-Eggbert, G. Pfennig, H. Munzel, Nuklidkarte, Bundesminister für wissenschaftliche Forschung, 3rd ed., Bonn, 1968.
G. R. Martin, private communication.
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Bunus, F. Determination of inorganic impurities in PVC latex by activation analysis. J. Radioanal. Chem. 13, 443–449 (1973). https://doi.org/10.1007/BF02513935
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DOI: https://doi.org/10.1007/BF02513935