兰州市大气飘尘中正构烷烃分布特征  

Characteristics of n-Alkanes in Airborne Particulates in Lanzhou

作　　者：彭林[1] 沈平[1] 

机构地区：[1]山西矿业学院地测系,中国科学院兰州地质研究所

出　　处：《沉积学报》1996年第A00期192-197,共6页Acta Sedimentologica Sinica

摘　　要：本文用ＧＣ—ＭＳ测定了兰州市大气飘尘、汽车尾气和烟尘等样品中可溶有机质的正构烷烃。研究表明，大气飘尘样品中正构烷烃含量较高，但不同时期尚存在一定差异；经与尾气、烟尘的正构烷烃对比认为，兰州市大气有机污染源主要来自于人为因素即化石燃料燃烧的排放物和少部分的自然因素。In this paper, n-alkanes of extracitable organic matter of airborne particulate samples, exhausted gas and smog dust were examined by GC-MS. The results were shown as follows:The concentration of n-alkanes is relative high but its variance depends on different seasons or areas; the comparison among n-alkanes from airborne particulates, exhausted gas and smog dust shows that the atomospheric pollution in Lanzhou results mainly from artificial factors and partly from natural factors with the former being heavier in winter than in summer.

关 键 词：大气飘尘 正构烷烃 化石燃料 空气污染 

分 类 号：X513[环境科学与工程—环境工程]