Abstract:Handan was the most seriously ozone polluted city compared with surrounding cities. This paper was analyzed the spatial and temporal distribution characteristics of ozone in Handan by using monitoring data. The analysis showed that ozone pollution was very serious during research period and the standard exceeding rate of days was 86.7% in Handan. Ozone concentration exhibited spatial variations over the research regions. The main causes of ozone pollution were influenced from elevated temperature, low humidity and transmission of southerly air masses. Then comprehensive air quality model extensions CAMx based ozone source apportionment technology (OSAT) was applied to quantify the contributions of different emissions to ozone concentration in different receptors of Handan. The analysis revealed that the ozone pollution in Handan had strong regional contribution. Local emissions to ozone pollution of administrative region had reached 43.9%, while obvious increase of ozone contribution to urban areas came from local emissions (46.5%). Chen’an was the most seriously ozone polluted county in Handan, while ozone pollution in Chen’an resulted from both local emissions (37.4%) and from Henan. Compared with monthly average, local emissions for the typical ozone pollution process tended to have more ozone contribution (54.0%). Divided by source sectors, the largest contributors to ozone of main urban areas were local mobile pollution sources. While for the typical ozone pollution process, the largest contributors turned into local metallurgical. Sensitivity analysis of model photochemical ozone generation showed that under monthly average most of ozone in main urban areas were generated in VOCs sensitive. While for the typical ozone pollution process, the proportion of ozone generated in NOx sensitive had been increased.
姚诗音, 魏巍, 沈泽亚, 王传达, 牛元. 我国典型钢铁工业城市夏季臭氧污染来源解析研究[J]. 中国环境科学, 2021, 41(1): 37-48.
YAO Shi-yin, WEI Wei, SHEN Ze-ya, WANG Chuan-da, NIU Yuan. Source apportionment of ozone pollution in the typical steel industry city of China in summer. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(1): 37-48.
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