北京市机动车尾气排放PM_(10)组分特征研究  

Characteristics of Chemical Composition of Particulate Matter(PM_(10)) from Beijing Vehicle

作　　者：石爱军[1] 马俊文[1] 耿春梅[2] 孟甜[1] 孔少飞[2] 

机构地区：[1]北京市环境保护监测中心,北京100048 [2]中国环境科学研究院,北京100012

出　　处：《中国环境监测》2014年第4期44-49,共6页Environmental Monitoring in China

摘　　要：为提高机动车尾气排放可吸入颗粒物PM10成分谱的代表性和准确性,提出并采用在机动车尾气检测线上采用稀释通道采样器随机采集机动车排出PM10的采样方法。采集了591辆轻、重型汽油车和柴油车尾气排放PM10,测试并分析了颗粒物的27种组分。数据表明:机动车排放颗粒物PM10中含量丰富的组分为OC、EC、NH+4、NO-3和SO2-4;柴油车排放PM10中OC和EC的质量分数为49.08%,是汽油车(38.38%)的1.3倍,汽油车的OC/EC(2.36)是柴油车(0.78)的3倍;汽油车排放PM10中的二次转化产物(SO42-+NH4++NO3-)的质量分数为19.37%,是柴油车(3.57%)的5.4倍;汽油车排放NH+4是柴油车的5.3倍。In order to improve the representation and accuracy of inhalable particulate matter （ PM10 ） and fine particulate matter component spectrum from vehicle. This paper proposed and used a new random sampling method of vehicle exhaust PM that using dilution tunnel in vehicle annual inspection station. Collection of PM10 from more than 591 petrol and diesel exhaust emissions, 27 kinds chemical composition of PM10 was analyzed. The result showed that： Main chemical composition of particulate matter （ PM10 ） from vehicle is OC、EC、NH4＋、NO3- and SO2-4 , the OC ＋ EC mass percentage of 49.08 % in PM10 of diesel vehicles is gasoline vehicles （38.38%） 1.3 times, the ratio of OC / EC in petrol vehicles（2.36） is a diesel car （0.78） 3 times. The secondary components （ NH4＋ ＋NO3- ＋SO2-4 ） of gasoline vehicles in mass percentage of 19.37%, is 5.4 times of diesel vehicles （3.57%）. The mass percentage of NH4＋ of gasoline vehicles is 5.3 times of diesel vehicles.

关 键 词：机动车尾气排放 可吸入颗粒物 成分谱 源解析 组分特征 

分 类 号：X822.3[环境科学与工程—环境工程]