| 典型热带海滨城市臭氧污染特征与成因分析 |
| 摘要点击 3599 全文点击 855 投稿时间：2022-11-13 修订日期：2023-02-06 |
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| 中文关键词 臭氧(O3) 污染特征 O3-NOx-VOCs敏感性 基于观测的模型(OBM) 海口市 |
| 英文关键词 ozone(O3) pollution characteristics O3-NOx-VOCs sensitiviy observation-based model(OBM) Haikou City |
| DOI 10.13227/j.hjkx.20231114 |
| 作者 | 单位 | E-mail | | 韩淑艳 | 山东大学环境研究院, 青岛 266237 | shuyanhan98@126.com | | 张鑫 | 山东大学环境研究院, 青岛 266237 | | | 谢荣富 | 海南省环境科学研究院, 海口 571126 | | | 霍思思 | 山东大学环境研究院, 青岛 266237 | | | 高利澳 | 山东大学环境研究院, 青岛 266237 | | | 吴泓锦 | 山东大学环境研究院, 青岛 266237 | | | 党娟 | 山东大学环境研究院, 青岛 266237 | | | 徐文帅 | 海南省环境科学研究院, 海口 571126 | xuwenshuai@hotmail.com | | 邢巧 | 海南省环境科学研究院, 海口 571126 | xingqiaohn@126.com | | 张庆竹 | 山东大学环境研究院, 青岛 266237 | | | 王文兴 | 山东大学环境研究院, 青岛 266237 | |
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| 中文摘要 |
| 为深入探究典型热带海滨城市环境空气臭氧（O3）污染特征与成因，于2019年6~10月在海南省海口市城区站点开展O3及其前体物观测实验，较为全面地分析了O3污染特征，基于观测的模型（OBM）识别了O3生成控制区，分析了O3前体物敏感性，并开展了O3前体物减排效果评估.结果表明：①海口市O3污染主要出现在9月和10月，观测期间O3日最大8h滑动平均值范围为39~190 μg·m-3，O3日变化呈单峰型，于14：00左右达到峰值.②海口市超标日NOx和VOCs浓度高于达标日，前体物浓度的升高是导致O3污染的内在因素，同时O3污染受区域传输影响，污染物主要来自于海口市东北部地区.③海口市O3生成处于VOCs和NOx协同控制区.9~10月O3生成敏感性前体物种不同，9月O3生成对人为源VOCs最为敏感，而10月份对NOx敏感性更高，不同月份的控制措施应因时而异.④今后为控制海口市O3污染，VOCs和NOx的减排比例以1：1~4：1为宜. |
| 英文摘要 |
| To investigate the pollution characteristics and formation mechanism of ambient air ozone(O3) in a typical tropical seaside city, we conducted an observational experiment on O3 and its precursors at an urban site in Haikou, Hainan Province, from June to October 2019. The O3 pollution characteristics were analyzed comprehensively; the O3-NOx-VOCs sensitivities and key precursors were determined, and the control strategies for O3 pollution were carried out. The results were as follows:1 O3 pollution in Haikou mainly occurred in September and October, with daily maximum 8-h O3 concentrations in the range of 39-190 μg·m-3, and the daily variation in O3 was unimodal, peaking at approximately 14:00. 2 The concentrations of NO2 and VOCs were higher during O3 pollution episodes than their respective mean values in Haikou City. The increased O3 precursor concentrations were an important factor leading to O3 pollution, whereas O3 pollution was also influenced by regional transport, with pollutants mainly transported from the northeastern part of Haikou City. 3 O3-NOx-VOCs sensitivity in Haikou City was in the VOCs and NOx transitional regime, and the most sensitive precursors in various months were different. O3 formation in September was sensitive to anthropogenic VOCs the most; however, in October it was sensitive to NOx. 4 In the future, the reduction ratio of VOCs to NOx should be 1:1-4:1 to control O3 pollution effectively in Haikou. |
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