【摘 要】
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A simple and cost-effective diffusive sampler compatible with thermal desorption and GC-MS wasdeveloped and evaluated. The new sampler (Figure 1), which contain
【机 构】
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DepartmentofBuildingScienceandTechnology,TsinghuaUniversity,Beijing,100084,PRChina
【出 处】
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中国环境科学学会室内环境与健康分会第五届年会
论文部分内容阅读
A simple and cost-effective diffusive sampler compatible with thermal desorption and GC-MS wasdeveloped and evaluated. The new sampler (Figure 1), which contains a stainless-steel powder sinteredmicroporous cylinder packed with molecular sieve as adsorbents, was used to collect benzene, toluene, m-, p-,o-xylene (BTX) by molecular diffusion. Through this process, it is easy to determine time-weighted average(TWA) concentration of BTX, which can reflect the long-term exposure to BTX.
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