β射线法测量PM10的方法改进
ENVIRONMENTAL MONITORING IN CHINA(2002)
Abstract
①采用全程加热方式:即对采样管路和采样纸带都进行加热,保证温度始终高于100℃,以防止水汽吸附在纸带上.②扣除含湿量法:一般自动监测系统中都能自动监测空气中的含湿量,因而只需在PM10的计算程序中扣除含湿量因素,即可正确反映实际值.
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