央广网北京7月20日消息（总台中国之声记者刘梦雅 蔡薇）据中央广播电视总台中国之声《新闻纵 横》报道，生态环境部发布的最新空气质量预报显示，7月下半月，全国大部空气质量以优良至轻度污 染为主。京津冀及周边地区中南部、长三角、汾渭平原和成都平原个别城市可能出现臭氧中度污染。 臭氧污染指的是近地面对流层臭氧浓度过高，对人体健康和生态环境造成危害的一种现象。近地面 的臭氧主要来自于机动车尾气、石油化工废气等污染源排放，这其中含有大量氮氧化物和挥发性有机物 等前体物，它们在强烈太阳紫外线的作用下发生光化学反应后，就会产生大量臭氧，从而造成臭氧污 染。高温的夏季是臭氧污染高发的季节，今年夏天臭氧污染的形势如何？人们应该怎样注意防范、降低 危害？当前又有哪些新技术、新手段来助力臭氧污染监测与治理？ 臭氧是氧气的同素异形体，在常温下是一种有特殊臭味的淡蓝色气体，这种气体有好有坏，到底 是"地球卫士"还是"隐形杀手"，这取决于它们到底在哪里。中国环境保护组织公众环境研究中心主任马 军介绍，约有90%的臭氧在10千米高空的平流层，是自然产生的，可以形成地球的保护伞，保护地球上 的生物免于紫外线的辐射伤害，这些臭氧就是有益的。与 ...

Group 1 - The core viewpoint highlights the early onset and widespread nature of ozone pollution in China this year, with a notable difference in pollution levels between northern and southern regions [1] - Source control is emphasized as a critical first step, focusing on reducing emissions from industrial enterprises and vehicles, particularly targeting nitrogen oxides and volatile organic compounds (VOCs) [1] - The promotion of low-VOC coatings and environmentally friendly production processes in industries is recommended to minimize VOC emissions [1] Group 2 - Strengthening the collaborative control of multiple pollutants, especially fine particulate matter (PM2.5) and ozone, is crucial due to their positive correlation [1] - Regional cooperation is necessary for effective pollution management, including timely sharing of information and alerts during heavy pollution events [1] - Urban spatial planning should optimize the layout of pollution sources, increase green coverage, and establish effective buffer zones to mitigate ozone's impact on residents [2] Group 3 - Research on the mechanisms of ozone formation and monitoring of precursor pollutants is essential for effective management [2] - Customized emergency control plans should be developed based on specific locations and pollution levels to manage ozone pollution peaks [2] - Individual actions towards adopting green and environmentally friendly lifestyles are necessary to reduce emissions of ozone precursor substances [2]

裴晓菲说，为有效应对臭氧污染，下一步，生态环境部将从几方面发力。一是完善环境空气质量监 测网络和光化学监测网络建设，密切关注臭氧及其前体物挥发性有机物和氮氧化物的浓度变化，加强预 测预报。二是持续开展挥发性有机物问题排查整治。三是推进重点行业超低排放改造，减少大气污染物 排放。四是进一步加强机动车环境监管。 裴晓菲说，机动车尾气中的氮氧化物是臭氧产生的重要前体物。今年5月，生态环境部等九部门出 台了相关意见，将围绕机动车排放领域突出问题，重点加强重型货车和检验维修机构监管，严厉打击超 标排放和弄虚作假问题，减少污染物排放。 总体来看，他透露，中国臭氧污染上升趋势已得到初步控制，近三年趋于平稳。根据会商结果，今 年6月至9月，中国大部地区气温预计偏高，从气象条件上看，更容易形成臭氧污染。 中新社北京6月25日电 (记者 阮煜琳) 中国生态环境部新闻发言人裴晓菲25日在北京举行的新闻发布 会上表示，中国臭氧污染上升趋势已得到初步控制，近三年趋于平稳。 监测显示，今年1月至5月，全国臭氧浓度为140微克/立方米，同比上升0.7%；全国臭氧超标天数共 计2480天，高于历史同期水平。据介绍，今年臭氧污染形势主要有三个 ...

Core Insights - The overall trend of ozone pollution in China has been initially controlled, stabilizing over the past three years [1] Group 1: Current Situation of Ozone Pollution - From January to May this year, the national ozone concentration was 140 micrograms per cubic meter, a year-on-year increase of 0.7% [1] - There were a total of 2,480 days with ozone exceeding standards, higher than the historical average for the same period [1] - Ozone pollution characteristics this year include: 1. Early onset of pollution, with 80 cities exceeding ozone standards as early as March 26, one month earlier than the average start time [1] 2. Widespread pollution, with over 100 cities exceeding ozone standards for five consecutive days from May 26 to 30 [1] 3. Severity of pollution is greater in the south compared to the north, attributed to higher temperatures and lower precipitation in southern regions [1] Group 2: Future Measures for Ozone Pollution Control - The Ministry of Ecology and Environment will enhance ozone pollution prevention through four main strategies: 1. Improve air quality monitoring networks and closely monitor the concentration changes of ozone and its precursors, volatile organic compounds, and nitrogen oxides [2] 2. Continue to investigate and rectify issues related to volatile organic compounds, with 5,912 enterprises inspected from January to April, uncovering 10,388 issues, and 9,530 issues rectified [2] 3. Promote ultra-low emission transformations in key industries, with over 80% of crude steel capacity undergoing such transformations by the end of May, along with significant projects in coking and cement industries [2] 4. Strengthen environmental regulation of motor vehicles, focusing on heavy-duty trucks and inspection agencies to combat excessive emissions and fraudulent practices [2]

Core Viewpoint - The article emphasizes the importance of reducing ozone pollution during the summer months by encouraging night-time refueling and promoting green travel methods to protect public health and improve air quality [1][2][3]. Group 1: Night-time Refueling Initiatives - Various cities in Henan province advocate for drivers to refuel at night (from 20:00 to 6:00) between May 1 and September 30, as lower temperatures reduce volatile organic compound (VOCs) emissions, thus decreasing ozone pollution [1][2][7][10][21]. - Gas stations are encouraged to implement night-time refueling discounts to attract customers and effectively manage daytime refueling traffic [5][10][21][23]. - The initiative aims to not only reduce environmental pollution but also provide economic benefits to consumers through discounts and promotions [1][5][10]. Group 2: Oil Unloading Adjustments - Gas stations are urged to adjust their oil unloading schedules to night-time hours (20:00 to 6:00) to minimize VOC emissions during high-temperature periods [3][8][12][19]. - Strict operational protocols are recommended to ensure the integrity of the unloading process, preventing gas leaks and further emissions [3][12][19]. Group 3: Promotion of Green Travel - Citizens are encouraged to adopt low-carbon travel methods, such as walking, cycling, or using public transport, particularly for short distances (1 km walking, 3 km cycling, 5 km public transport) [4][11][18]. - Recommendations include parking vehicles in shaded areas to reduce fuel evaporation and minimizing idling time to lower emissions [11][19][20].