中山市大气中醛酮类化合物的污染特征研究
Study on Pollution Characteristics of Atmospheric Aldehydes and Ketones in Zhongshan
陈莉莉 1利雪儿 1何蕴琦 1黄海荣 1张颖姬 1刘小珍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醛酮类化合物污染特征,于2022年6月份、12月份,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醛酮类化合物进行采样分析,并对大气中醛酮类化合物的主要组成、浓度特征进行了分析研究.研究表明:中山市大气中检测出15种醛酮化合物,总质量浓度为54.16µg/m3,浓度占比较大的为甲醛、乙醛、丙酮和2-丁酮,它们的质量浓度关系为2-丁酮＞丙酮＞乙醛＞甲醛,该4种化合物共占醛酮类化合物总质量浓度的82.47％.同时分析了甲醛、乙醛、丙酮和2-丁酮四种醛酮类化合物的臭氧生成潜势(OFP),甲醛和乙醛臭氧生成潜势的贡献较大,二者总占比为74.72％.
Abstract
In order to investigated the pollution characteristics of aldehydes and ketones on the atmosphere of Zhongshan City,the main composition and concentration characteristics of aldehydes and ketones in the atmosphere of Zhongshan City were analyzed by SUMMA tank sampling and atmospheric preconcentration gas chromatography-mass spectrometry in June and December 2022.The results showed that 15 types of aldehyde and ketone compounds were detected on the atmosphere of Zhongshan City,with a total concentration of 54.16 μg/m3.Formaldehyde,acetaldehyde,acetone,and 2-butanone accounted for a relatively larger proportion of the concentration.The mass concentration relationship was 2-butanone＞acetone＞acetaldehyde＞formaldehyde,and these four compounds accounted for 82.47％of the total concentration of aldehydes and ketones.The ozone generation potential(OFP)of four aldehyde ketone compounds(formaldehyde,acetaldehyde,acetone,and 2-butanone)was analyzed.The OFP contribution of formaldehyde and acetaldehyde was more significant,with a total proportion of 74.72％.
关键词
中山市/醛酮类化合物/污染特征Key words
Zhongshan City/aldehydes and ketones/pollution characteristics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