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Characteristics of the Major Atmospheric Aromatic Hydrocarbons in the Yellow Sea
박승명,김정수,이강웅,장유운,이미혜,강창희,선우영 한국대기환경학회 2015 Asian Journal of Atmospheric Environment (AJAE) Vol.9 No.1
We measured the concentrations of five aromatichydrocarbons (benzene, toluene, ethylbenzene, m,pxylene,and styrene) in the atmosphere during fourseasonal campaigns at Deokjeok and Jeju Islands inthe Yellow Sea from October 2005 to June 2006. Toluene was the most abundant aromatic hydrocarbon,with median of 0.24 ppb at Deokjeok and 0.20ppb at Jeju, followed by benzene (0.21 ppb, 0.15ppb) and m,p-xylene (0.06 ppb, 0.06 ppb). Aromatichydrocarbon measurements exhibited the typicalseasonality of the major emission sources, such asvehicle exhaust, solvent evaporation, and regionalcirculation patterns. The ratios of m,p-xylene/ethylbenzeneof 1.57 at Deokjeok and 1.05 at Jeju reflectedthe degree of proximity to outflows of eachsource region, South Korea and China. The toluene/benzene ratios of 1.0 were consistently both on fieldobservations and on the 3-D chemical model simulation,which is slightly higher than that in the WesternPacific area. It implied that the air over the YellowSea was influenced to a great extent by the surroundingareas. We confirmed that current emissioninventories of aromatic hydrocarbons in NortheastAsia reasonably reproduced temporal and spatialvariations of toluene and benzene over the YellowSea.
흡광차분석장치를 이용한 암모니아와 스타이렌 분석의 타당성 검토
박승명,윤인철,장유운,한진석,이강웅 한국냄새환경학회 2007 실내환경 및 냄새 학회지 Vol.6 No.1
DOAS (Differential Optical Absorbance Spectrometry) has been designated as one of the instrumental analyses for the continuous and real time measurement of ammonia and styrene under the newly established Korean Offensive Odor Prevention Law. However, cases of odor monitoring using DOAS are very limited, as questions have been raised relating to its reliability, mainly for ambient monitoring. This paper primarily focused on the advantages and limitations of DOAS for the measurements of ammonia and styrene, with a review of the theoretical and field intercomparison studies, to address its suitability, particularly for odor monitoring purposes. However, this instrumental technique was found to be useful for real time continuous measurements of concentrations over a few ppbv, for both ammonia and styrene, and was also found to be sensitive enough for odor monitoring purposes over vast multi industrial complex regions.