Global intercomparison of polyurethane foam passive air samplers evaluating sources of variability in SVOC measurements

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Authors

MELYMUK Lisa Emily NIZZETTO pernilla bohlin HARNER Tom WHITE Kevin Bradley WANG Xianyu TOMINAGA Maria Yumiko HE Jun LI Jun MA Jianmin MA Wan-Li ARISTIZABAL Beatriz H. DREYER Annekatrin JIMENEZ Begona MUNOZ-ARNANZ Juan ODABASI Mustafa DUMANOGLU Yetkin YAMAN Baris GRAF Carola SWEETMAN Andrew KLÁNOVÁ Jana

Year of publication 2021
Type Article in Periodical
Magazine / Source Environmental Science & Policy
MU Faculty or unit

Faculty of Science

Citation
Web https://www.sciencedirect.com/science/article/pii/S1462901121002161?via%3Dihub
Doi http://dx.doi.org/10.1016/j.envsci.2021.08.003
Keywords Passive air sampling; Global air monitoring; Persistent organic pollutants; Semi-volatile organic compounds; Stockholm Convention; PUF disk
Attached files
Description Polyurethane foam passive air samplers (PUF-PAS) are the most common type of passive air sampler used for a range of semi-volatile organic compounds (SVOCs), including regulated persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs), and emerging contaminants (e.g., novel flame retardants, phthalates, current-use pesticides). Data from PUF-PAS are key indicators of effectiveness of global regulatory actions on SVOCs, such as the Global Monitoring Plan of the Stockholm Convention on Persistent Organic Pollutants. While most PUF-PAS use similar double-dome metal shielding, there is no standardized dome size, shape, or deployment configuration, with many different PUF-PAS designs used in regional and global monitoring. Yet, no information is available on the comparability of data from studies using different PUF-PAS designs. We brought together 12 types of PUF-PAS used by different research groups around the world and deployed them in a multi-part intercomparison to evaluate the vari-ability in reported concentrations introduced by different elements of PAS monitoring. PUF-PAS were deployed for 3 months in outdoor air in Kjeller, Norway in 2015-2016 in three phases to capture (1) the influence of sampler design on data comparability, (2) the influence of analytical variability when samplers are analyzed at different laboratories, and (3) the overall variability in global monitoring data introduced by differences in sampler configurations and analytical methods. Results indicate that while differences in sampler design (in particular, the spacing between the upper and lower sampler bowls) account for up to 50 % differences in masses collected by samplers, the variability introduced by analysis in different laboratories far exceeds this amount, resulting in differences spanning orders of magnitude for POPs and PAHs. The high level of variability due to analysis in different laboratories indicates that current SVOC air sampling data (i.e., not just for PUF-PAS but likely also for active air sampling) are not directly comparable between laboratories/monitoring programs. To support on-going efforts to mobilize more SVOC data to contribute to effectiveness evaluation, intercalibration exercises to account for uncertainties in air sampling, repeated at regular intervals, must be established to ensure analytical comparability and avoid biases in global-scale assessments of SVOCs in air caused by differences in laboratory performance.
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