Underhill D W
Am Ind Hyg Assoc J. 1984 May;45(5):306-10. doi: 10.1080/15298668491399839.
The efficiency of passive samplers can be influenced strongly by the adsorption isotherm. In this study calculations of sampling efficiency were made in terms of dimensionless variables for adsorption controlled by the Langmuir, Freundlich, and Dubinin-Radushkevich isotherms, respectively. Of particular importance is that for the latter isotherm, which is often followed by activated charcoal for the adsorption of solvent vapors, passive sampling may remain highly efficient until a significant fraction of the capacity of the adsorbent has been utilized.
被动采样器的效率会受到吸附等温线的强烈影响。在本研究中，分别根据朗缪尔等温线、弗伦德利希等温线和杜比宁-拉杜舍维奇等温线控制吸附的无量纲变量来计算采样效率。特别重要的是，对于后一种等温线（活性炭吸附溶剂蒸汽时通常遵循这种等温线），在吸附剂的大部分容量被利用之前，被动采样可能一直保持高效。
