评估采样器外壳对室内被动式空气采样器测量 SVOC 的影响

S. Vojta, L. Melymuk, R. Prokes, J. Klánová
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引用次数: 0

摘要

使用聚氨酯泡沫(PUF)吸附剂进行被动空气采样(PAS)是一种广泛应用于表征室内环境中空气中半挥发性有机化合物(SVOC)浓度的技术;然而,对于采样器外壳的类型以及如何将采样器质量转换为空气浓度,目前还鲜有共识。我们对室内最常用的三种 PUF-PAS 采样器外壳进行了系统评估,并对所有三种外壳类型中 > 50 种 SVOC 的吸收率进行了描述,其中包括传统的持久性有机污染物、杀虫剂、燃烧副产物和阻燃剂。PUF盘的屏蔽量与PUF-PAS的等效空气量之间存在明显联系,双碗外壳的采样率中值为0.72立方米/天(0.62-0.92立方米/天),单碗为1.3立方米/天(1.0-1.7立方米/天),无任何外壳的PUF为1.8立方米/天(1.4-2.2立方米/天)。结合这些结果和现有的 PUF-PAS 室内吸收数据的荟萃分析,我们为 PUF-PAS 在室内环境中的适用范围和采样率的选择提出了建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of the impact of sampler housing on indoor passive air sampler measurements of SVOCs
Passive air sampling (PAS) using a polyurethane foam (PUF) sorbent is a widely used technique to characterize air concentrations of semi-volatile organic compounds (SVOCs) in indoor environments; however, there is little consensus on the type of housing used in sampler housings and how sampler masses are converted to air concentration. We systematically evaluate the three types of PUF-PAS sampler housings most commonly used indoors, and characterize uptake rates for > 50 SVOCs, covering legacy persistent organic pollutants, pesticides, combustion by-products, and flame retardants for all three housing types. There is a clear association between the amount of shielding of the PUF disk and equivalent air volumes for PUF-PAS, with median sampling rates for double-bowl housings of 0.72 m3/day (0.62-0.92 m3/day), 1.3 m3/day (1.0-1.7 m3/day) for single bowl, and 1.8 m3/day (1.4-2.2 m3/day) for PUFs without any housing. Combining these outcomes with a meta-analysis of existing data on PUF-PAS indoor uptake, we provide recommendations for the range of applicability and selection of sampling rates for PUF-PAS in indoor environments.
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CiteScore
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