Study on Pollution Characteristics of Atmospheric Aldehydes and Ketones in Zhongshan
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％.
Zhongshan Cityaldehydes and ketonespollution characteristics
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