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Sensors 2011, 11(3), 2992-3003; doi:10.3390/s110302992

Gas-to-Particle Conversion in Surface Discharge Nonthermal Plasmas and Its Implications for Atmospheric Chemistry

National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba West, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
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Received: 6 January 2011 / Revised: 21 February 2011 / Accepted: 4 March 2011 / Published: 7 March 2011
(This article belongs to the Special Issue Direct and Indirect Sensing of Odor and VOCs and Their Control)
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Abstract

This paper presents some experimental data on gas-to-particle conversion of benzene using nonthermal plasma (NTP) technology and discusses the possibility of its technical application in atmospheric chemistry. Aerosol measurement using a differential mobility analyzer (DMA) revealed that the parts of benzene molecules were converted into a nanometer-sized aerosol. Aerosol formation was found to be highly related with the missing part in carbon balance. Scanning electron microscopy analysis showed that the aerosols formed in synthetic humid air are the collection of nanoparticles. The carbonyl band (C=O) was found to be an important chemical constituent in the aerosol. The potential of the NTP as an accelerated test tool in studying secondary organic aerosol (SOA) formation from VOCs will be also addressed.
Keywords: nonthermal plasma; aerosol formation; secondary organic aerosol (SOA); volatile organic compound (VOC) nonthermal plasma; aerosol formation; secondary organic aerosol (SOA); volatile organic compound (VOC)
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Kim, H.-H.; Ogata, A. Gas-to-Particle Conversion in Surface Discharge Nonthermal Plasmas and Its Implications for Atmospheric Chemistry. Sensors 2011, 11, 2992-3003.

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