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Verification of diffusive and pumped samplers for volatile organic compounds using a controlled atmosphere test facility.

Martin, N A; Leming, E J; Henderson, M H; Lipscombe, R P; Black, J K; Jarvis, S D (2010) Verification of diffusive and pumped samplers for volatile organic compounds using a controlled atmosphere test facility. Atmos. Environ., 44 (28). pp. 3378-3385.

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Abstract

There is a requirement to verify the performance of sorbent-based passive or active samplers and to extend their use, where possible, to monitor the wide range of volatile organic compounds (VOCs) that are known to be photochemical ozone pre-cursors or are relevant to the activities of the petrochemical industry. We report measurements of the 14-day diffusive uptake rates for the VOCs: i-butane (2-methyl propane), n-butane, i-pentane (2-methyl butane), n-pentane, n-hexane, benzene, toluene, and m-xylene (at environmental level concentrations) for industry standard axial samplers (Perkin-Elmer-type samplers) containing the sorbents Carbopack -X, -Z -B or Tenax-TA. We also present data on back-diffusion, blank levels, and storage for the above sorbents, and describe the simultaneous use of the sorbent Carbopack-X for pumped sampling of certain VOCs. The results were obtained by dosing samplers in a controlled atmosphere test facility (CATFAC) operating under well-defined conditions of concentration, nominal temperature of 20ºC, wind speed of 0.5 m s-1, and relative humidities of 0 % and 80%. Field measurements were also obtained to provide supplementary data to support the laboratory study.

Item Type: Article
Subjects: Environmental Measurement
Environmental Measurement > Air Quality and Airborne Particulates
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4740

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