水体中总α总β放射性水平的测量  

Determination of total alpha and total beta radioactive level in bodies of water

作　　者：汪苓[1] 

机构地区：[1]北京铀矿地质研究所

出　　处：《核技术》1989年第7期436-439,共4页Nuclear Techniques

摘　　要：本文介绍以1升环境水样,用蒸发法制备样品,在具有金硅面垒半导体探测器及反符合屏蔽的低水底α-β测量装置上,同时测量水体中总α、总β放射性强度的方法。本方法的测量灵敏度,对总α为4.8×10^(-2)Bq/l,总β为1.9×10^(-2)Bq/l,最低探测限,对总α为2.4×10^(-2)Bq/l,总β为1.9×10^(-3)Bq/l。In this paper is described a method of simultaneous determination of the total' alpha and total beta radioactive level in bodies of water. This method uses low background measuring apparatus with an anticoincidence shield and an Au-Si surface bar- rie detector. The samples are prepared using the vaporization method for one litre environmental water. The measurement sensitivity is 4.8×10-2Bq/l for total alpha and 1.9×10-2Bq/l for total beta. The lowest detection limit is 2.4×x10-2Bq/l for total alpha and 1.9×10-3Bq/l for total beta.

关 键 词：水质监测 放射性 制样 测量 

分 类 号：X832[环境科学与工程—环境工程]