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Novel multi-sorbent for sampling and determination of trace volatile organic sulfur compounds in ambient air

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Novel adsorbent APSG-MW (average particle size 215 ┬Ám and specific surface 98 m2 g−1) bonding multi-walled carbon nanotubes (MWCNTs) on silica gel are obtained. Then the sampling tubes filled with Tenax TA and APSG-MW are prepared and the adsorptive capacity of Tenax TA/APSG-MW for volatile organic sulfur compounds (VOSCs) is studied. The data show that the adsorption and desorption recoveries of multi-sorbent for VOSCs are satisfactory (>85%), and the breakthrough values are large (>16 L g−1) enough to absorb VOSCs in ambient air. The sampling precision of the sorbent tubes meets TO-17 criteria. The sampling tubes are successfully used to concentrate and analyze a sample of landfill air, and the major S compounds are identified.
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Keywords: Tenax TA; multi-walled carbon nanotubes; volatile organic sulfur compounds (VOSCs), multi-sorbent sampling

Document Type: Research Article

Affiliations: School of Applied Science, University of Science and Technology, Beijing, China 100083

Publication date: January 1, 2013

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