Etude Des Teneurs En Cuivre,Zinc, Et Arsenic Dans La Poudre De Lait Par Activation Neutronique |
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Abstract: | Abstract Copper, zinc and arsenic have been determined in dehydrated milk powder by neutron activation analysis. Irradiation 13 of ashed milk powder in a flux of 1013 thermal neutrons per second per sq. cm. was followed by: elution through an anion exchange resin; solvent extraction of copper with dithizone into a chloroform phase; precipitation and subsequent redissolution of arsenic as As2, S3 and as a polysulfide, respectively. The determinative step involved gamma ray spectroscopy of the isotopes Zn67, Zn65, Cu64 and As76. |
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Keywords: | powdered milk copper zinc arsenic neutron activation analysis |
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