中山市大气中正构烷烃的污染特征和来源分析
Pollution Characteristics and Source of Atmospheric N-alkanes in Zhongshan
陈莉莉 1何蕴琦 1利雪儿 1黄海荣 1刘小珍 1张颖姬1
作者信息
- 1. 广东省中山生态环境监测站,广东 中山 528400
- 折叠
摘要
为探究中山市大气中正构烷烃的污染特征,于 2022 年利用苏玛罐采样、大气预浓缩-气相色谱质谱联用技术对中山市大气中的正构烷烃进行采样分析,并对大气中正构烷烃的主要组成、浓度特征、来源和臭氧生成潜势进行了分析研究.研究表明,中山市大气中检测出 11 种正构烷烃,总质量浓度为 27.71 μg/m3,浓度占比较大的为乙烷、正丙烷、正丁烷、正戊烷和正己烷,该 5种化合物共占正构烷烃总浓度的87.69%.分析了乙烷、正丙烷、正丁烷、正戊烷和正己烷的臭氧生成潜势(OFP),正丁烷和正戊烷臭氧生成潜势的贡献较大,二者总占比为 70.34%.
Abstract
In order to investigated the pollution characteristics of n-alkanes on the atmosphere of Zhongshan City,the main composition,concentration characteristics,source and OFP of n-alkanes in the atmosphere of Zhongshan City were analyzed by SUMMA tank sampling and atmospheric preconcentration gas chromatography-mass spectrometry in 2022.The results showed that 11 types of n-alkanes were detected on the atmosphere of Zhongshan City,with a total concentration of 27.71μg/m3.Ethane,n-propane,n-butane,n-pentane and n-hexane accounted for a relatively larger proportion of the concentration.The mass concentration and these five compounds accounted for 87.69%of the total concentration of n-alkanes.The ozone generation potential(OFP)of five n-alkanes(ethane,n-propane,n-butane,n-pentane and n-hexane)was analyzed.The OFP contribution of n-butane and n-pentane were more significant,with a total proportion of 70.34%.
关键词
中山市/正构烷烃/污染特征/来源/臭氧生成潜势Key words
Zhongshan City/n-alkanes/pollution characteristics/source/OFP引用本文复制引用
基金项目
中山市社会公益与基础研究项目(2021B2004)
中山市社会公益与基础研究项目(2021SYF08)
出版年
2024
NETL
NSTL
万方数据