Determination of inorganic impurities in vinyl chloride by activation analysis

Trace impurities in vinyl chloride have been determined by activation analysis in a reactor thermal neutron flux of 1.2 x 10(9)n mm (2)sec . Irradiations were carried out on liquid and solid samples at the same time as a standard. Gamma-spectrometry was used to reveal the presence of arsenic and bromine, the quantitative estimation being based on two calculus methods., The impurities determined were: arsenic 8.0 +/- 0.6 x 10(-4)%, bromine 3.07 +/- 0.2 x 10(-3)% and phosphorus 2.0 +/- 0.15 x 10(-2)%.