臭氧污染对广东省2020年空气质量目标影响的探讨  

Discussion on the influence of ozone pollution on the 2020 air quality target of Guangdong Province

作　　者：汪宇[1] 区宇波[1] 陈多宏[1] 陈诗琳 赵燕[1] 翟宇虹 梁家权 WANG Yu;OU Yubo;CHEN Duohong;CHEN Shilin;ZHAO Yan;ZHAI Yuhong;LIANG Jiaquan(State Environmental Key Laboratory of Regional Air Quality Monitoring,Guangdong Environmental Protection Key Laboratory of Secondary Air Pollution Research,Guangdong Environmental Monitoring Center,Guangzhou Guangdong 510308;One Point Environmental Science and Technology(Guangzhou)Co.,Ltd.,Guangzhou Guangdong 510000)

机构地区：[1]广东省环境监测中心,国家环境保护区域空气质量监测重点实验室,广东省环境保护大气二次污染研究重点实验室,广东广州510308 [2]壹点环境科技(广州)有限公司,广东广州510000

出　　处：《环境污染与防治》2020年第1期120-123,128,共5页Environmental Pollution & Control

基　　金：国家重点研发计划项目（No.2018YFC0213903）;广东省科技发展专项资金项目（No.2017B020216007）

摘　　要：广东省2020年空气质量考核要求PM2.5不超过33μg/m3,空气质量优良天数比例不低于92.5%。在减排努力下,广东省PM2.5持续下降,2018年达到31μg/m3,但由于臭氧超标率日益上升,空气质量优良天数比例欠佳。区域背景浓度上升、地形不利于扩散、高温时间长、热带气旋活跃、副热带高压影响持续时间长、天然源挥发性有机物(VOCs)排放强度高等客观因素,加剧了广东省臭氧污染,严重影响了空气质量优良天数比例目标的可达性。当前以PM2.5防治为主,臭氧防治有效路径尚未明确,建议考虑影响臭氧污染的客观因素,使用参比状态监测数据作为考核依据,统计方法采用3年滑动平均,允许考核目标上下浮动。According to the 2020 air quality assessment target of Guangdong Province,PM2.5 concentration will be not to exceed 33μg/m3,and the ratio of days with good air quality not less than 92.5%.Under the emission reduction efforts,PM2.5 concentration of Guangdong Province continued to decline,reaching 31μg/m3 in 2018.However,the ratio of days with good air quality substandard,due to the rising of ozone pollution.The increase of regional background concentration,topography which was not conducive to diffusion,long time of high temperature,active tropical cyclones,long duration of subtropical high and high emission intensity of natural source volatile organic compounds(VOCs)were objective factors that aggravated the ozone pollution,by which the ratio of days with good air quality was seriously affected.In the current stage of PM2.5 prevention and control,effective path of ozone prevention had not been found.Considering the objective factors affecting ozone pollution,the suggestions were recommended to use the reference status monitoring data for evaluation and adopt a three-year moving average for statistical methods to fluctuate the assessment target.

关 键 词：空气质量目标 臭氧污染 影响因素 广东省 

分 类 号：X51[环境科学与工程—环境工程]