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LONG-TERM PERFORMANCE OF PASSIVE VOLATILE ORGANIC COMPOUNDS (VOCS) SAMPLERS FOR INDOOR AIR
Zimmerman, J., B. Schumacher, C. Lutes, B. Cosky, and H. Hayes.
Environments 12(8):267(2025)
Filed Under: Demonstrations
Filed Under: Demonstrations
The first phase of this study evaluated the performance of Radiello® charcoal-based, solvent-extracted passive samplers over exposure periods ranging from one week to one year in a test house with known vapor intrusion (VI). Chloroform %Bias values exceeded the ±30% acceptance criterion after four weeks of exposure. Benzene, hexane, and TCE concentrations were within the acceptance criterion for up to three months. Toluene and PCE demonstrated uniform uptake rates over one year. In the second phase of this study, testing of the longer exposure times of six months and one year was evaluated with three additional passive samplers: Waterloo Membrane Sampler™ (WMS™), SKC 575 with secondary diffusive cover, and Radiello 130 passive samplers with yellow diffusive bodies. The SKC 575 and Radiello 130 passive samplers produced acceptable results (%Bias ≤ 30%) over the six-month exposure period, while the WMS sampler results favored petroleum hydrocarbon more than chlorinated solvent uptake. After the one-year exposure period, the passive sampler performances were acceptable under specific conditions for this study. Results suggest that all three samplers can produce acceptable results over exposure time periods beyond 30 days and up to a year for some compounds. This article is Open Access at https://www.mdpi.com/2076-3298/12/8/267
Environments 12(8):267(2025)
Filed Under: Demonstrations
Filed Under: Demonstrations
The first phase of this study evaluated the performance of Radiello® charcoal-based, solvent-extracted passive samplers over exposure periods ranging from one week to one year in a test house with known vapor intrusion (VI). Chloroform %Bias values exceeded the ±30% acceptance criterion after four weeks of exposure. Benzene, hexane, and TCE concentrations were within the acceptance criterion for up to three months. Toluene and PCE demonstrated uniform uptake rates over one year. In the second phase of this study, testing of the longer exposure times of six months and one year was evaluated with three additional passive samplers: Waterloo Membrane Sampler™ (WMS™), SKC 575 with secondary diffusive cover, and Radiello 130 passive samplers with yellow diffusive bodies. The SKC 575 and Radiello 130 passive samplers produced acceptable results (%Bias ≤ 30%) over the six-month exposure period, while the WMS sampler results favored petroleum hydrocarbon more than chlorinated solvent uptake. After the one-year exposure period, the passive sampler performances were acceptable under specific conditions for this study. Results suggest that all three samplers can produce acceptable results over exposure time periods beyond 30 days and up to a year for some compounds. This article is Open Access at https://www.mdpi.com/2076-3298/12/8/267
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