title: Passive sampling for volatile organic compounds in indoor air-controlled laboratory comparison of four sampler types.
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.
authors: Geosyntec Consultants, Inc., 130 Research Lane, #2, Guelph, Ontario N1G 5G3, Canada. tmcalary@geosyntec.com.
authors: Todd
authors: T
authors: McAlary
authors: Hester
authors: H
authors: Groenevelt
authors: Stephen
authors: S
authors: Disher
authors: Jason
authors: J
authors: Arnold
authors: Suresh
authors: S
authors: Seethapathy
authors: Paolo
authors: P
authors: Sacco
authors: Derrick
authors: D
authors: Crump
authors: Brian
authors: B
authors: Schumacher
authors: Heidi
authors: H
authors: Hayes
authors: Paul
authors: P
authors: Johnson
authors: Tadeusz
authors: T
authors: Górecki
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D055549:Volatile Organic Compounds