试论水氡观测中仪器K值的使用

在水氡观测仪器标定中 ,关于标定K值的使用方法 ,《规范》规定 :当新—原K值相对偏差小于 5 %时继续延用原K值。但在实际观测中 ,这样容易导致误差积累。本文从日常观测中出现的几个问题分析 ,认为在每年仪器标定后 ,无论标定的仪器新一原K值相对偏差是否大于 5 %,都应采用新K值。

On the use of the instrument's K-value in ground-water radon content observations

The use of the K-values of an instrument for ground-water radon content observations before and after a calibration is stipulated in the 《Standard》 as follows: the old K-value remains in use when the difference between the old and new K-values is less than 5%. In the practical observations, however, this might easily lead to an accumulation of errors. Based on an analysis of some problems appearing in the routine observations, the present paper suggests that the new K-value should be used after the yearly calibration of an instrument no matter whether the difference between the old and new K-values is greater than 5%.