土壤气中挥发性有机物被动采样技术研究进展OA

The collection of soil gas samples is crucial for the detection of volatile organic compounds(VOCs)in contaminated site investigations and subsequent site risk assessment.Common methods for soil gas collection methods can be divided into active and passive sampling.This paper mainly introduces the basic principle of passive sampling,the formula for calculating the adsorption rate of passive sampler,the structure of sampler and the types of adsorbents commonly used.In addition,this paper summarizes the application and research progress of VOCs passive sampling technology in soil gas at home and abroad and the existing problems in field application.Finally,the future research directions of passive sampling technology are prospected.