摘要
研究分析2021年夏季长沙市四个典型站点的臭氧(O_(3))浓度变化及影响因素。长沙市O_(3)浓度在日变化上呈现明显的“峰谷变化”,在高温、低湿的气象条件下易发生O_(3)污染。广义相加模型(GAM)拟合显示NO_(x)、湿度和活性醛酮、苯系物等VOCs是影响O_(3)的主要因素,累积偏差解释率约为80.0%。影响各站点O_(3)浓度的活性物种有所不同,马坡岭主要包括丙酮和乙烷,环保学院以乙烷为主,高新区站活性VOCs则为1,2,3-三甲基苯,复合站主要包括丙烷和乙醛。研究结果揭示,2021年夏季长沙市O_(3)浓度以本地影响为主,受VOCs和NO_(x)的协同控制。
This study analyzed the characteristics of ozone(O_(3))concentration changes and influencing factors at four typical stations in Changsha during summer of 2021.The research found that O_(3)concentration at different stations exhibited a distinct“peak-valley”diurnal variation.Under conditions of high temperature,low humidity,O_(3)pollution events are prone to occur.A Generalized Additive Model(GAM)fit revealed that NO_(x),humidity,and VOCs such as reactive aldehydes,ketones,benzene series,were the primary factors influencing O_(3)concentration at each station,accounting for over 80.0%of the cumulative explanatory variance.The active species affecting O_(3)concentrations at each site varied,with acetone and ethane being predominant at Mapoling,ethane at the Environmental Protection College station,1,2,3-trimethylbenzene at the High-tech Zone station,and propane and acetaldehyde at the Composite station.The results indicate that summer O_(3)concentration in Changsha is influenced by local factors,controlled synergistically by VOCs and NO_(x).
作者
金红红
王志文
张琴
郭卉
虞小芳
Jin Honghong;Wang Zhiwen;Zhang Qin;Guo Hui;Yu Xiaofang(Hunan Ecological and Environmental Monitoring Center,Changsha 410019,China;State Environmental Protection Key Laboratory of Monitoring for Heavy Metal Pollutants,Changsha 410019,China;Hangzhou Puyu Technology Development Co.Ltd,Hangzhou 310000,China)
出处
《环境科学与管理》
2025年第7期114-119,共6页
Environmental Science and Management
基金
国家自然科学基金资助项目(50578020)
湖南省环保科研课题(湘财预[2020]001号)
国家环境保护重金属污染监测重点实验室开放基金(SKLMHM202217)。
关键词
臭氧
气象
前体物
广义相加模型
ozone
meteorology
precursor
generalized additive model
作者简介
金红红(1988-),女,硕士研究生,工程师,从事大气环境监测与预警预报工作;通信作者:王志文。
