Novel multi-sorbent for sampling and determination of trace volatile organic sulfur compounds in ambient air |
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| Authors: | Peng Zhao Jiemin Liu Li Wang Qin Yi |
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| Affiliation: | 1. School of Applied Science, University of Science and Technology , Beijing , China 100083 zpwelcome@sina.com;3. School of Applied Science, University of Science and Technology , Beijing , China 100083 |
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| Abstract: | Novel adsorbent APSG-MW (average particle size 215?µm 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: | multi-walled carbon nanotubes Tenax TA volatile organic sulfur compounds (VOSCs), multi-sorbent sampling |
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