CHEMICAL FRACTIONATION OF RADIOACTIVE CESIUM IN AIRBORNE PARTICLES CONTAINING BOMB FALLOUT, CHERNOBYL FALLOUT AND ATMOSPHERIC MATERIAL FROM THE SELLAFIELD SITE

被引：30

作者：

HILTON, J

CAMBRAY, RS

GREEN, N

机构：

[1] Institute of Freshwater Ecology, The Windermere Laboratory, Ambleside, Cumbria LA22 0LP, Far Sawrey

[2] AERE Harwell, Didcot

[3] National Radiological Protection Board, Chilton, Didcot

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1992年 / 15卷 / 02期

关键词：

D O I：

10.1016/0265-931X(91)90046-I

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Airborne particulate material was collected at Didcot (UK) in June 1959, a period of elevated atmospheric Cs-137 concentrations due to atmospheric weapons testing; in May 1986, during the peak of Chernobyl deposition; and in 1987, from a location close to the Sellafield reprocessing plant. The samples were selectively extracted chemically in an attempt to identify the different forms of radiocaesium. Approximately 70% of the Chernobyl material was found to be water-soluble, compared to only 8% of the weapons fallout and 50% of the Sellafield material. The results corroborate evidence from elsewhere that Chernobyl radiocaesium was more mobile than weapons fallout. However, the data are not completely conclusive as chemical changes during storage on filters of the weapons fallout material would have had some effect. The initial mobility of the Chernobyl radiocaesium was rapidly reduced as it became locked in certain lake sediments.

引用

页码：103 / 111

页数：9

共 18 条

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