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Measurements of environmental 1,3-butadiene with pumped and diffusive samplers using the sorbent Carbopack X
AbstractStudies with the sorbent Carbopack X in pumped and diffusive samplers, of the Perkin–Elmer-type, have been carried out using a controlled atmosphere test facility (CATFAC) to generate 1,3-butadiene, together with benzene, at environmental levels. The 7-day and 14-day 1,3-butadiene diffusive uptake rates for this sorbent have been determined to be respectively (1.24±0.16)ngppm−1min−1 ((0.55±0.07)cm3min−1)) and (1.02±0.12)ngppm−1min−1 ((0.45±0.05)cm3min−1)) under a wide range of concentrations at 20°C, 50% relative humidity and a wind speed of 1ms−1. Preliminary studies indicate that this sorbent may also be useful in radial diffusive samplers for short-term monitoring over a few hours. A pumped sampling method has been developed to measure both 1,3-butadiene and benzene simultaneously over a period of 14-days using two Perkin–Elmer-type devices coupled to an in-house developed controlled flow air sampler. The 1,3-butadiene safe sampling volume for Carbopack X has been measured yielding a value of 82litreg−1. Tests carried out with calibrated amounts of 1,3-butadiene (50ng and 150ng) on Carbopack X indicate that samplers should be stored in a refrigerator prior to thermal desorption in order to achieve a recovery of effectively 100%. Ambient ozone does not appear to react with 1,3-butadiene adsorbed in the samplers.
Measurements of environmental 1,3-butadiene with pumped and diffusive samplers using the sorbent Carbopack X
AbstractStudies with the sorbent Carbopack X in pumped and diffusive samplers, of the Perkin–Elmer-type, have been carried out using a controlled atmosphere test facility (CATFAC) to generate 1,3-butadiene, together with benzene, at environmental levels. The 7-day and 14-day 1,3-butadiene diffusive uptake rates for this sorbent have been determined to be respectively (1.24±0.16)ngppm−1min−1 ((0.55±0.07)cm3min−1)) and (1.02±0.12)ngppm−1min−1 ((0.45±0.05)cm3min−1)) under a wide range of concentrations at 20°C, 50% relative humidity and a wind speed of 1ms−1. Preliminary studies indicate that this sorbent may also be useful in radial diffusive samplers for short-term monitoring over a few hours. A pumped sampling method has been developed to measure both 1,3-butadiene and benzene simultaneously over a period of 14-days using two Perkin–Elmer-type devices coupled to an in-house developed controlled flow air sampler. The 1,3-butadiene safe sampling volume for Carbopack X has been measured yielding a value of 82litreg−1. Tests carried out with calibrated amounts of 1,3-butadiene (50ng and 150ng) on Carbopack X indicate that samplers should be stored in a refrigerator prior to thermal desorption in order to achieve a recovery of effectively 100%. Ambient ozone does not appear to react with 1,3-butadiene adsorbed in the samplers.
Measurements of environmental 1,3-butadiene with pumped and diffusive samplers using the sorbent Carbopack X
Martin, Nicholas A. (author) / Duckworth, Philippa (author) / Henderson, Malcolm H. (author) / Swann, Nigel R.W. (author) / Granshaw, Simon T. (author) / Lipscombe, Robert P. (author) / Goody, Brian A. (author)
Atmospheric Environment ; 39 ; 1069-1077
2004-09-27
9 pages
Article (Journal)
Electronic Resource
English