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Field- and model-based calibration of polyurethane foam passive air samplers in different climate regions highlights differences in sampler uptake performance
Atmospheric Environment ( IF 4.2 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.atmosenv.2020.117742
Pernilla Bohlin-Nizzetto , Lisa Melymuk , Kevin B. White , Jiří Kalina , Vincent O. Madadi , Sam Adu-Kumi , Roman Prokeš , Petra Přibylová , Jana Klánová

Abstract Polyurethane foam (PUF) passive air samplers (PAS) are widely used for measurements of persistent organic pollutants (POPs) and other semi-volatile organic compounds (SVOCs) in large-scale monitoring networks as well as in case studies around the globe. Calibration of PUF-PAS is performed by field-based calibration studies or passive sampler uptake models, but both these are typically performed and/or validated in temperate zones, while the sampling rates are more widely applied, including in tropical and polar zones. Here, we present field-based calibrations results for MONET PUF-PAS from a subtropical and tropical site (Nairobi, Kenya and Accra, Ghana) based on side-by-side deployment of PUF-PAS and active air samplers (AAS), as well as model PAS uptake from available passive sampler uptake models. By comparing these results with a similar calibration from a temperate site (Brno, Czech Republic), we show that the higher ambient temperatures result in higher effective sampling rates for intermediate molecular weight SVOCs (logKOA of 7–11) as a result of lower particle-bound fraction, and in lower sample volumes for lighter SVOCs (logKOA

中文翻译:

基于现场和模型的聚氨酯泡沫被动空气采样器在不同气候区域的校准突出了采样器吸收性能的差异

摘要 聚氨酯泡沫 (PUF) 被动空气采样器 (PAS) 广泛用于大规模监测网络以及全球案例研究中持久性有机污染物 (POP) 和其他半挥发性有机化合物 (SVOC) 的测量。PUF-PAS 的校准是通过基于现场的校准研究或被动采样器吸收模型进行的,但这两种模型通常在温带地区进行和/或验证,而采样率应用更广泛,包括热带和极地地区。在这里,我们展示了来自亚热带和热带地区(肯尼亚内罗毕和加纳阿克拉)的 MONET PUF-PAS 的基于现场的校准结果,该结果基于 PUF-PAS 和主动空气采样器 (AAS) 的并排部署,如以及来自可用被动采样器吸收模型的模型 PAS 吸收。
更新日期:2020-10-01
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