title: Homogeneous and heterogeneous reactions of anthracene with selected atmospheric oxidants.
abstract: The reactions of gas-phase anthracene and suspended anthracene particles with O3 and O3-NO were conducted in a 200-L reaction chamber, respectively. The secondary organic aerosol (SOA) formations from gas-phase reactions of anthracene with O3 and O3-NO were observed. Meanwhile, the size distributions and mass concentrations of SOA were monitored with a scanning mobility particle sizer (SMPS) during the formation processes. The rapid exponential growths of SOA reveal that the atmospheric lifetimes of gas-phase anthracene towards O3 and O3-NO are less than 20.5 and 4.34 hr, respectively. The particulate oxidation products from homogeneous and heterogeneous reactions were analyzed with a vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer (VUV-ATOFMS). Gas chromatograph/mass spectrometer (GC/MS) analyses of oxidation products of anthracene were carried out for assigning the time-of-flight (TOF) mass spectra of products from homogeneous and heterogeneous reactions. Anthrone, anthraquinone, 9,10-dihydroxyanthracene, and 1,9,10-trihydroxyanthracene were the ozonation products of anthracene, while anthrone, anthraquinone, 9-nitroanthracene, and 1,8-dihydroxyanthraquinone were the main products of anthracene with O3-NO.
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. zhangyang@ucas.ac.cn
authors: Yang
authors: Y
authors: Zhang
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Jinian
authors: J
authors: Shu
authors: University of Chinese Academy of Sciences, Beijing 100049, China.
authors: Yuanxun
authors: Y
authors: Zhang
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Bo
authors: B
authors: Yang
mesh_terms: D000336:Aerosols; D000393:Air Pollutants / Q000737:chemistry*; D000873:Anthracenes / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D016877:Oxidants / Q000737:chemistry*
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D000873:Anthracenes; D016877:Oxidants; C034020:anthracene