INGESTION OF CHERNOBYL CS-137 IN AKITA-CITY, JAPAN

被引：4

作者：

HISAMATSU, S

TAKIZAWA, Y

机构：

[1] Department of Public Health, Akita University, School of Medicine, Akita, 010

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1990年 / 11卷 / 03期

关键词：

D O I：

10.1016/0265-931X(90)90019-R

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The ingestion of 137Cs during 1985-1988 in Akita City, Japan, has been studied. Samples of 13 separate food categories were collected and analyzed for Cs radioisotopes. The ingestion rate of 137Cs originating from the Chernobyl accident decreased exponentially with a practical half-life of 1·6 years. The total ingestion of Chernobyl 137Cs per capita is estimated to be 62 Bq. The relative contributions of various food categories to 137Cs ingestion after the accident were dissimilar to those from nuclear weapons testing. Thus, the contamination pattern for Chernobyl 137Cs was characterized ingestion. The practical half-life for the decrease in the 137Cs ingestion rate by a higher contribution (42%) by dairy products to total 137Cs ingestion. The practical half-life for the decrease in the 137Cs ingestion rate from dairy products was found to be 0·75 years. The transfer coefficient from deposition to diet for 137Cs from the Chernobyl accident was found to be significantly lower than that describing transfer of 137Cs from nuclear weapons tests. © 1990.

引用

页码：267 / 278

页数：12

共 26 条

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