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Environ Sci Technol

Title:		Current challenges in air sampling of semivolatile organic contaminants: sampling artifacts and their influence on data comparability
Author(s):		Melymuk L; Bohlin P; Sanka O; Pozo K; Klanova J;
Address:		"Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University , Kamenice 5/753, Pavilon A29, Brno 62500, Czech Republic"
Journal Title:		Environ Sci Technol
Year:		2014
Volume:		20141203
Issue:		24
Page Number:		14077 - 14091
DOI:		10.1021/es502164r
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"With current science and policy needs, more attention is being given to expanding and improving air sampling of semivolatile organic contaminants (SVOCs). However, a wide range of techniques and configurations are currently used (active and passive samplers, different deployment times, different sorbents, etc.) and as the SVOC community looks to assess air measurements on a global scale, questions of comparability arise. We review current air sampling techniques, with a focus on sampling artifacts that can lead to uncertainties or biases in reported concentrations, in particular breakthrough, degradation, meteorological influences, and assumptions regarding passive sampling. From this assessment, we estimate the bias introduced for SVOC concentrations from all factors. Due to the effects of breakthrough, degradation, particle fractions and sampler uptake periods, some current passive and active sampler configurations may underestimate certain SVOCs by 30-95%. We then recommend future study design, appropriateness of sampler types for different study goals, and finally, how the SVOC community should move forward in both research and monitoring to best achieve comparability and consistency in air measurements"
Keywords:		Air Pollutants/*analysis Artifacts Environmental Monitoring/*methods Reproducibility of Results Volatile Organic Compounds/*analysis;
Notes:		"MedlineMelymuk, Lisa Bohlin, Pernilla Sanka, Ondrej Pozo, Karla Klanova, Jana eng Research Support, Non-U.S. Gov't Review 2014/10/21 Environ Sci Technol. 2014 Dec 16; 48(24):14077-91. doi: 10.1021/es502164r. Epub 2014 Dec 3"