城市与乡村大气中非甲烷烃(NMHCs)差异  

Difference in Nonmethane Hydrocarbons (NMHCs) between Urban and Rural Atmospheres

作　　者：程红兵[1] 王木林[1] 

机构地区：[1]中国气象科学研究院,中国气象局大气成分观测与服务中心,中国气象局大气化学重点开放实验室,北京100081

出　　处：《气象科技》2010年第6期668-672,共5页Meteorological Science and Technology

基　　金：国家自然科学基金重点项目(40433008)资助

摘　　要：在北京工业大学(城市点)和天津市宝邸县新安镇(乡村点)两个观测点进行了大气中非甲烷烃(NMHCs)的现场取样。从2006年4月16日至5月12日,分两批共获取约80个样本,检出55个组分,其中烷烃25个,烯烃19个,芳香烃10个。从非甲烷烃所含成分及其浓度的观测结果可见,城、乡两地大气中总烃(TNMHCs)平均浓度分别是438.1±173.1μg/m^3、193.8±184.4μg/m^3,城市是乡村的2.3倍,而TNMHCs的低值乡村只有城市的1/5。The samples were obtained from two observation stations for nonmethane hydrocarbons （NMHCs）：Beijing University of Technology（urban site） and Xinan,Baodi of Tianjin（rural site） from 6 April to 20 May in 2006.A total of 80 samples were obtained during two periods,with 55 compounds were detected,including 25 Alkanes,19 Alkenes and 10 aromatics.It can be seen from the components and concentrations of NMHCs in both urban and rural atmosphere that the average concentrations of TNMHCs are 438.1±173.1μg/m^3and 193.8±184.4μg/m^3,respectively.The urban level is 2.3 times as high as that of the rural one,and the lowest value of TNMHCs in rural atmosphere is only one fifth of that in the urban atmosphere.

关 键 词：非甲烷烃 气相色谱 空气污染 城市 乡村 

分 类 号：P433[天文地球—大气科学及气象学]