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Issue 5, 2015
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Passive sampling for volatile organic compounds in indoor air-controlled laboratory comparison of four sampler types

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Abstract

This article describes laboratory testing of four passive diffusive samplers for assessing indoor air concentrations of volatile organic compounds (VOCs), including SKC Ultra II, Radiello®, Waterloo Membrane Sampler (WMS) and Automated Thermal Desorption (ATD) tubes with two different sorbents (Tenax TA and Carbopack B). The testing included 10 VOCs (including chlorinated ethenes, ethanes, and methanes, aromatic and aliphatic hydrocarbons), spanning a range of properties and including some compounds expected to pose challenges (naphthalene, methyl ethyl ketone). Tests were conducted at different temperatures (17 to 30 °C), relative humidities (30 to 90% RH), face velocities (0.014 to 0.41 m s−1), concentrations (1 to 100 parts per billion by volume [ppbv]) and sampling durations (1 to 7 days). The results show that all of the passive samplers provided data that met the success criteria (relative percent difference [RPD] ≤ 45% of active sample concentrations and coefficient of variation [COV] ≤ 30%) in the majority of cases, but some compounds were problematic for some samplers. The passive sampler uptake rates depend to varying degrees on the sampler, sorbent, target compounds and environmental conditions, so field calibration is advantageous for the highest levels of data quality.

Graphical abstract: Passive sampling for volatile organic compounds in indoor air-controlled laboratory comparison of four sampler types

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Submitted
18 Oct 2014
Accepted
23 Mar 2015
First published
24 Mar 2015

Environ. Sci.: Processes Impacts, 2015,17, 896-905
Article type
Paper
Author version available

Passive sampling for volatile organic compounds in indoor air-controlled laboratory comparison of four sampler types

T. McAlary, H. Groenevelt, S. Disher, J. Arnold, S. Seethapathy, P. Sacco, D. Crump, B. Schumacher, H. Hayes, P. Johnson and T. Górecki, Environ. Sci.: Processes Impacts, 2015, 17, 896
DOI: 10.1039/C4EM00560K

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