title: Gas-to-particle conversion in surface discharge nonthermal plasmas and its implications for atmospheric chemistry.
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.
authors.affiliation: National Institute of Advanced Industrial Science and Technology, AIST Tsukuba West, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan. hyun-ha.kim@aist.go.jp
authors.forename: Hyun-Ha
authors.initials: HH
authors.lastname: Kim
authors.forename: Atsushi
authors.initials: A
authors.lastname: Ogata
mesh_terms: D000336:Aerosols / Q000032:analysis; D001272:Atmosphere / Q000737:chemistry*; D001554:Benzene / Q000737:chemistry; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D005583:Fourier Analysis; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis*; D058626:Plasma Gases / Q000032:analysis*; D013057:Spectrum Analysis; D013499:Surface Properties; D013696:Temperature
chemical_list: D000336:Aerosols; D052638:Particulate Matter; D058626:Plasma Gases; D001554:Benzene