Martin, N A; Marlow, D J; Henderson, M H; Goody, B A; Quincey, P G (2003) Studies using the sorbent Carbopack X for measuring environmental benzene with Perkin-Elmer-type pumped and diffusive samplers. Atmos. Environ., 37 (7). pp. 871-879.

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Abstract

Studies with the sorbent Carbopack X in pumped and diffusive samplers, of Perkin-Elmer-type, have been carried out in a controlled atmosphere test facility (CATFAC) employed to generate volatile organic compound (VOC) atmosphere. The benzene safe sampling volume for Carbopack X has been measured, using an indirect method, and found to be (5400±740)1g-1, suggesting that this sorbent is suitable for long-term pumped sampling. Good agreement in concentration has been obtained between calibrate benzene test atmospheres and values derived from pumped samplers, well within the expected uncertainty for this technique. The 2-week benzene diffusive uptake rate for Carbopack X has been determined to be (1.99±0.18) ng ppm-1 min-1 for environmental applications, and was found to be constant over a wide range of VOC concentrations. The 2-week toluene and o-xylene diffusive uptake rates for this sorbent are also reported, over a more limited range, together with the 2-week benzene, toluene and o-xylene diffusive uptake rates for Chromosorb 106.

Item Type:	Article
Keywords:	safe sampling volume
Subjects:	Environmental Measurement Environmental Measurement > Air Quality and Airborne Particulates
Last Modified:	02 Feb 2018 13:16
URI:	http://eprintspublications.npl.co.uk/id/eprint/2560

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