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- Title
Gaseous and Particle-bound VOC Products of Combustion Extracted by Needle Trap Samplers.
- Authors
Cheng, Wen-Hsi; Zhan, Weiqiang; Pawliszyn, Janusz
- Abstract
Gaseous benzene, toluene, ethylbenzene and o-xylene (BTEX) were extracted by using the divinylbenzene (DVB) particles (mesh sizes 60-80, 80-100 and 100-120) as sorbents packed in passive needle trap samplers (NTS). This study performed feasibility tests of these self-designed DVB-NTS as diffusive time-weighted average (TWA) samplers and compared extraction efficiency with that of 100 mm polydimethylsiloxane-solid phase microextration (PDMS-SPME) fiber for sampling gaseous and particle-bound volatile organic compounds (VOCs) from burning mosquito coils. Experimental results indicated that extraction rate of NTS is a reliable index in extracting VOCs. Additionally, comparisons of the NTS in extracting BTEX mass showed the NTS packed with the smallest diameters of adsorbent particles (100-120 mesh DVB) were the most effective. The mass of gaseous BTEX extracted by 100 μm PDMS-SPME fiber were substantially lower than that extracted by DVB-NTS of all meshes for the 30-min TWA sampling of burning mosquito coils, and NTS packed with 100-120 mesh DVB adsorbed BTEX 50-120 ng BTEX. Particles clogging inside the packed phase of NTS inhibited VOC extraction performance after 3-5 samplings of burning particles, especially NTS packed with small-diameter adsorbents.
- Subjects
VOLATILE organic compounds; PARTICLES; COMBUSTION; EXTRACTION (Chemistry); ETHYLBENZENE; ORTHOXYLENE; SORBENTS
- Publication
Journal of the Chinese Chemical Society, 2013, Vol 60, Issue 8, p1027
- ISSN
0009-4536
- Publication type
Article
- DOI
10.1002/jccs.201200654