THE MEASUREMENT OF LOW CONCENTRATIONS OF KR-85 IN ATMOSPHERIC AIR SAMPLES

被引：6
|
作者：
WILHELMOVA, L
TOMASEK, M
STUKHEIL, K
机构：
[1] Institute of Radiation Dosimetry, Czech Academy of Sciences, Prague, 180 86
来源：
BIOLOGICAL TRACE ELEMENT RESEARCH | 1994年 / 43-5卷
关键词：
KR-85; RADIATION MONITORING; ANNUAL VARIATIONS; RADIOACTIVITY; ATMOSPHERE;
D O I：
10.1007/BF02917377
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Krypton-85 atmospheric contamination produced by the nuclear industry has been investigated on the basis of regular measurements. Kr-85 concentrations observed in ground-level air of Prague between 1983 and 1993 are presented and their time-related changes analyzed. The long-term trend of Kr-85 air activity increased steadily over the monitored period with the growth rate of 38 mBq.m(-3) (STP)/yr and reached about 1.2 Bq.m(-3) (STP) in 1992. Short-term variations of the baseline level with the average amplitude of 12% show a seasonal periodicity. Occasionally detected extreme values of up to 2.5 Bq.m(-3) (STP) indicate undispersed emissions from distant nuclear fuel reprocessing plants.
引用
收藏
页码：725 / 730
页数：6
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