扩散法被动式个体采样器的设计原理、试验装置和性能评价方法

介绍了被动式个体采样器的设计原理实验装置和性能评价方法。分别测定了对１０种主要室内气体污染物［ＳＯ２、ＮＯ２、ＣＯ２、ＮＨ３、ＨＣＨＯ、ＨＦ、Ｃ６Ｈ６、Ｃ６Ｈ５·ＣＨ３、Ｃ６Ｈ４·（ＣＨ３）２、ＣＨＣｌ３］的采样速率（单面采样５０～１４０ｍｌ／ｍｉｎ，双面增加一倍），相对标准差＜１０％，与有动力的标准方法相比较，总不确定度＜±２５％。这种采样器体积小似一枚徽章，重量轻仅１０ｇ，使用方便。现场验证和使用表明，可适用于室内空气污染和个体接触量的监测。

Principle of structural design and evaluation of performance characteristics of passsive personal samplers by molecular diffusion

The paper presents a principle of structural design, laboratory test apparatus and evaluation of performance characteristics of passive personal samplers by molecular diffusion.Sampling rates of 10 kinds of gaseous or vapour pollutantsSO2,NO2,NH3,HF,CO2,HCHO,C6H6,C6H5·CH3,C6H4·(CH3)2,CHCl3]in ambient air have been respectively determinated.The range of sampling rate of single side is 50～140ml/min, parallel side sampling is double, Relative standard deviation is less than 10%. Factors of effect on sampling rates have been discussed.Compared with active devices in field and laboratory experiments, the relative overall uncertianty of passive personal samplers is less than ±25%. As passive personal samplers are small, weightlight(10g), inexpensive, simple to operate, their properties are applicable to indoor air pollution monitoring and evaluation of personal exposures.