多环芳烃在广州市大气中垂直高度浓度分布和昼夜变化  被引量:1

Vertical Distributions and Diurnal Variability of Polycyclic Aromatic Hydrocarbons in Guangzhou

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作  者:李莹[1] 祝慧娜[1] 张良波[1] 张宝忠[1,2] 

机构地区:[1]河南工业大学化学化工学院环境工程系,河南郑州450000 [2]中国科学院广州地球化学研究所有机地球化学国家重点实验室,广东广州510640

出  处:《广东化工》2016年第2期5-6,共2页Guangdong Chemical Industry

基  金:河南工业大学河南省省属高校基本科研业务费专项资金资助(No.2014JCYJ05);河南工业大学博士基金(No.2012BS045)

摘  要:摘利用TSP大流量采样器分别在2010年8月和12月于广州市某铁塔(50 m和100 m)处进行大气采样,并分析大气样品中多环芳烃(polycyclic aromatic hydrocarbons,PAHs)的浓度分布、组成分布、垂直变化、昼夜变化、季节变化。结果显示:在海拔高度100 m(塔高50 m)的采样点处,广州市大气(气相+颗粒相)中PAHs夏季白天(98 ng/m^3)和夜间(99 ng/m^3)浓度均高于冬季的白天(56 ng/m^3)和夜间(84 ng/m^3);但在海拔高度150 m(塔高100 m)的采样点处,大气中(气相+颗粒相)中PAH夏季白天(53 ng/m^3)和夜间浓度(73 ng/m^3)略低或相当于冬季的白天(62 ng/m^3)和夜间浓度(77 ng/m^3)。Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental contaminants. To investigate vertical distribution, diurnal variation of PAHs in Guangzhou, air samples were collected using a high-volume air sampler on the TV tower in August and December 2010. The concentrations of PAHs in air (vapor+particulate) were higher both in the daytime (98 ng/m3) and at night (99 ng/m3) in summer than those (in the daytime: 56 ng/m3 and at night: 84 ng/m3) in winter at the 50-meter height of tower. However, the concentrations of PAHs in air (vapor+particulate) were slightly lower in the daytime (53 ng/m3) and at night (73 ng/m3) in summer than those (in the daytime: 62 ng/m3 and at night: 77 ng/m3) in winter at the height of 100-meter on the tower.

关 键 词:多环芳烃 大气 浓度分布 昼夜变化 

分 类 号:TQ051.13[化学工程]

 

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