徐州大气中醛酮化合物污染特征初步研究  

Preliminary study on pollution characteristics of aldehydes and ketones in the atmosphere of Xuzhou

作　　者：王海棠 陆启伟 冯文洁 Wang Haitang;Lu Qiwei;Feng Wenjie(Xuzhou Environmental Monitoring Center,Jiangsu Province;Xuzhou high-tech Industrial Development Zone,Xuzhou 221000)

机构地区：[1]江苏省徐州环境监测中心,江苏徐州221000 [2]徐州高新技术产业开发区,江苏徐州221000

出　　处：《环保科技》2022年第6期50-53,共4页Environmental Protection and Technology

摘　　要：优化了大气中15种醛酮类化合物的测定方法,选择徐州市区四个采样点,在臭氧浓度较高的4-9月开展为期两年的连续监测,分析其月度、年度组分和浓度水平及不同采样点污染特征。结果表明:优化后的方法实现丙酮和丙烯腈分离的同时,分析效率比国标方法提高近3倍;与其他城市相比,徐州醛酮类化合物浓度处于中等污染水平,2021年浓度较2020年低;醛酮类化合物受温度和人为因素影响较大,所有点位在平均气温最高的8月份浓度出现高值,位于4#点位由于受人为影响较大,醛酮类化合物浓度相比于其他点位浓度稍高。The determination of aldehydes and ketones in the atmosphere was optimized in this article.Four sites in the urban area of Xuzhou were selected for monitoring from April to September in two years when ozone concentrations were higher.The monthly and annual composition,concentration level and pollution characteristics at different sites were analyzed.The results showed acetone and acrylonitrile were separated by the optimized method and the analysis efficiency is nearly 3 times higher than the national standard method.Compared with other cities,the concentration of aldehydes and ketones in Xuzhou was at moderate pollution level.The concentration of 2021 was lower than that in 2020,which were greatly influenced by temperature and man-made factors.In August,when the average temperature was highest,the concentrations of aldehydes and ketones in the 4#were higher.

关 键 词：醛酮类化合物 方法优化 污染特征 徐州市 

分 类 号：X823[环境科学与工程—环境工程]