Simultaneous determination of arsenic and antimony in environmental samples by radiochemical neutron activation analysis |
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| Authors: | K. Rengan J. P. Haushalter J. D. Jones |
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| Affiliation: | (1) Chemistry Department, Eastern Michigan University, 48197 Ypsilanti, Michigan, (USA);(2) Phoenix Memorial Laboratory, University of Michigan, 48109 Ann Arbor, Michigan, (USA) |
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| Abstract: | A radiochemical separation procedure using an inorganic exchanger, tin dioxide (TDO), for the separation of arsenic from antimony is reported here. This separation avoids the interference of 564 keV gamma-ray of122Sb in the measurement of the 559 keV gamma-ray of76As in neutron activation analysis. Environmental samples, after neutron irradiation and digestion, are taken up in 1M HCl–0.1M HF and passed through a TDO column which selectively retains arsenic. The effluent from the TDO column, after proper conditioning, is passed through an anion exchange column for quantitative retention of antimony. The procedure has been utilized for arsenic and antimony determination in NBS Orchard Leaves and NBS Albacore Tuna. |
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