2021年夏季長(zhǎng)沙市臭氧污染特征及影響因素研究

打開文本圖片集

中圖分類號(hào)：X515

文章編號(hào)：1674-6139（2025）07-0114-06

文獻(xiàn)標(biāo)志碼：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號(hào) 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

隨著經(jīng)濟(jì)社會(huì)的快速發(fā)展，以臭氧 （03 ）代表的二次污染物濃度呈現(xiàn)出逐漸上升的趨勢(shì)，已成為繼細(xì)顆粒物（ PM2.5 ）之后另一重要的區(qū)域性污染物[1]。（剩余4606字）