摘要
分不同季节采集分析北京市城乡结合部的大气可吸入颗粒物。用气相色谱-质谱技术分析了北京市城乡结合部大气可吸入颗粒物中饱和烃组分,检测出C11～C37的正构烷烃及其它烃类化合物。正构烷烃分布主要可分为3种类型:前峰型、后峰型、单峰型。利用地球化学的相关参数,同时结合正构烷烃的分布特征,对正构烷烃的污染来源进行分析。前峰型,主要来源于汽车尾气和化石燃料燃烧。后峰型,主要来源于植物蜡。单峰型,既有植物蜡的输入,也有尾气和化石燃料燃烧的输入。对正构烷烃在不同季节大气可吸入颗粒物中分布情况的比较,表明正构烷烃分布随季节有较明显的变化。
The inhalational particles from the urban area in Beijing were collected during the spring, summer, autumn and winter. Aliphatic components of those samples were analyzed by gas chromatograph mass spectrometer, the alkane homolog from C11 to C37 and other hydrocarbon compounds were detected. The distribution of n-alkanes was mainly divided into three types that was the front peak type, behind peak type and the single peak type. The pollutants sources of the n-alkanes were discussed using some molecular geochemical parameter with the information about the distribution of n-alkanes. The front peak type mainly came from the vehicle exhaust and combustion of fossil fuel. The behind peak type, mainly came from plant wax. The typical single peak type, possible came from plant wax、the vehicle exhaust and combustion of fossil fuel. The distribution of n-alkanes in different seasons was compared. The result showed that the distribution ofn-alkanes were changes obviously with seasons.
出处
《广东化工》
CAS
2006年第8期65-67,共3页
Guangdong Chemical Industry
