2021年夏季长沙市臭氧污染特征及影响因素研究

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中图分类号：X515

文章编号：1674-6139（2025）07-0114-06

文献标志码：B

Study on Characteristics and Influencing Factors of Summer Ozone Pollution in Changsha City（2021）

Jin Honghong1，2，Wang Zhiwen³，Zhang Qin 1，2 ，Guo Hui 1，2 ，Yu Xiaofang

（1.Hunan Ecological and Environmental Monitoring Center，Changsha 41Oo19，China;

2.StateEnvironmentalProtectionKeyLaboratoryof Monitoring for Heavy MetalPolutants，Changsha410o19，China;

3．Hangzhou Puyu Technology DevelopmentCo.Ltd，Hangzhou 310oOO，China）.

Abstract：This study analyzed thecharacteristics of ozone（ 03 ）concentration changes and influencing factors at four typical stations in Changsha during summer of 2O21.The research found that O3 concentration at different stations exhibited a distinct“peak-valley”diurnal variation.Under conditions of high temperature，low humidity， O3 pollution events are prone to occur.A Generalized Additive Model（GAM）fit revealed that NOx ，humidity，and VOCs such as reactive aldehydes，ketones，benzene series，were the primary factors influencing O3 concentration at each station，accounting for over 80.0% ofthe cumulative explanatory variance.The active species affecting （204号 03 concentrationsateachsitevaried，withacetoneandethanebeingpredominantatMapoling，ethaneattheEnvironmentalProtection Collegestatio，，，rimetybenzeeattheHghtechZonesationandpropaneandcetaldehydeatteCompositeie results indicate that summer 03 concentration in Changsha is influenced by local factors，controlled synergistically byVOCsand NOx.

Key words：ozone；meteorology；precursor；generalized additive model

前言

随着经济社会的快速发展，以臭氧 （03 ）代表的二次污染物浓度呈现出逐渐上升的趋势，已成为继细颗粒物（ PM2.5 ）之后另一重要的区域性污染物[1]。（剩余4606字）