杭州典型区域C2-12质量浓度变化及臭氧潜势量分析  

Variations in Mass Concentrations and Ozone Formation Potentials of C2-12 Hydrocarbons in Typical Areas of Hangzhou,China

作　　者：洪盛茂[1] 焦荔[1] 何曦[1] 徐鸿[1] 孙鸿良[1] 黄晓东 陈林 

机构地区：[1]杭州市环境监测中心站,浙江杭州310007 [2]杭州大地安科环境仪器有限公司,浙江杭州311101

出　　处：《环境科学研究》2009年第8期938-943,共6页Research of Environmental Sciences

基　　金：杭州市科学技术局重点项目(20051323B41)

摘　　要：利用荷兰Synspec公司的GC955-611/811在线气相色谱系统于2006年9月20日—10月11日对杭州市区5个典型区域的ρ(C2-12)进行了自动连续监测.结果表明:ρ(C2-12)以次干道最高(为189.0μg/m3),主干道次之(为165.6μg/m3),云栖清洁对照区最低(为109.9μg/m3).下沙经济开发区的C2-12主要来自化工企业的排放,云栖清洁对照区主要来自植被排放,其他区域主要来自机动车排放.各区域芳烃以甲苯、乙苯等苯系物为主,均占芳烃总量的90%左右;烷烃中w(正己烷)最高;烯烃中异丁烯,1,3-丁二烯的含量最高;各组分最大臭氧潜势量在5个典型区域中均以异丁烯、甲苯较大.The mass concentrations of C2-12 hydrocarbons in five typical areas of Hangzhou, China were measured continuously from September 20 to October 11, 2006, using on-line gas chromatographic systems （Synspec GC955-611/811, from the Netherlands）. The results show that the highest, the second highest, and the lowest total mass concentrations of C2-12 hydrocarbons occurred near the sub-traglc arteries, the traffic arteries, and the Yunxi background site, respectively, with the corresponding values being 189.0, 165.6, and 109.9 μg/m3 , respectively. The potential major sources of C2-12 hydrocarbons in the Xiasha area, Yunxi background area, and other areas were beheved to be petrochemical emissions, vegetation emissions, and vehicle emissions, respectively. In all studied areas, arenes were dominated by BTEX, particularly toluene and ethylbenzene, which accounted for 90% of the arenes; among alkanes, hexane had the highest concentration, while iso-butene and 1,3-butadiene were the main olefin species. The estimated ozone formation potentials （OFP） suggest that the OFP values of iso-butene and toluene are highest and second highest in all typical areas.

关 键 词：典型区域 C2-12 苯系物 最大潜势量 

分 类 号：X511[环境科学与工程—环境工程]