title: [Determination and characteristics of OH radical in urban atmosphere in Beijing].
abstract: The measurement of atmospheric hydroxyl radicals (OH) in Beijing was carried out using two methods based on high performance liquid chromatography (HPLC). The diurnal variation of OH concentration was obtained. The maximum concentration during sunny daytime was about 8 x 10(7) cm-3 in summer, while it decreased to about 2 x 10(7)-4 x 10(7) cm-3 in autumn. The relationships between OH and other pollutants were studied and discussed. Positive linear correlation between OH and UV-B intensity, O3, HNO2 was observed, while negative correlation between OH and NOx was found.
authors.affiliation: State Key Laboratory of Environmental Simulation and Pollution Control, Center of Environmental Sciences, Peking University, Beijing 100871, China.
authors.forename: Xinrong
authors.initials: X
authors.lastname: Ren
authors.forename: Huixiang
authors.initials: H
authors.lastname: Wang
authors.forename: Kesheng
authors.initials: K
authors.lastname: Shao
authors.forename: Guofang
authors.initials: G
authors.lastname: Miao
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Tang
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China; D002851:Chromatography, High Pressure Liquid; D017665:Hydroxyl Radical / Q000032:analysis*; D012621:Seasons; D014504:Urban Health
chemical_list: D000393:Air Pollutants; D017665:Hydroxyl Radical