The Specific Activity Level and Hygienic Evaluation of U. Th and Ra In Aquiculture and Forage In Which Rare Earths Are Used

摘要

This paper report the specific activity level of U. Th. and Ra of the samples of pork, beef, lamb, milk, chicken, eggs, carp in which rare earths were used. during 1986-1992 and of the samples of Agropyron Mongolicum keng, Astraglus absurges pall, Amaranthus Panicu latus L. Medicago media Pers, Elymus sibiricus L. , Fagopyrum Esculentum Moench in which rare earths were used during 1987-1993. The result is that either in agriculture or in forage in which rare earths were used, The specific activities of U. Th. Ra havn't obvious changes in the products in which rare earths were used or not used, being in normal background level.