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  • 1 Comisión Nacional de Energia Atómica Gerencia de Area Radioisótopos y Radiaciones Av. del Libertador 8250 1429 Buenos Aires (República Argentina)
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A method for arsenic, antimony, selenium and molybdenum determination in water, loess and volcanic glasses, by radiochemical neutron activation analysis based on coprecipitation with Bi2S3 in hydrochloric medium, is described. The results of application to a study of natural contamination in the south-eastern region of the province of Córdoba, Republic of Argentina, are presented and discussed.