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首页> 外文期刊>Environmental Science & Technology >Increasing External Effects Negate Local Efforts to Control Ozone Air Pollution: A Case Study of Hong Kong and Implications for Other Chinese Cities
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Increasing External Effects Negate Local Efforts to Control Ozone Air Pollution: A Case Study of Hong Kong and Implications for Other Chinese Cities

机译：外部影响的增加否定了当地控制臭氧空气污染的努力：以香港为例，对中国其他城市的意义

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摘要

It is challenging to reduce ground-level ozone (O_3) pollution at a given locale, due in part to the contributions of both local and distant sources. We present direct evidence that the increasing regional effects have negated local control efforts for O_3 pollution in Hong Kong over the past decade, by analyzing the daily maximum 8 h average O_3 and O_3 (=O_3+NO_2) concentrations observed during the high O_3 season (September-November) at Air Quality Monitoring Stations. The locally produced O_x showed a statistically significant decreasing trend over 2002-2013 in Hong Kong. Analysis by an observation-based model confirms this decline in in situ O_x production, which is attributable to a reduction in aromatic hydrocarbons. However, the regional background O_x transported into Hong Kong has increased more significantly during the same period, reflecting contributions from southern/eastern China. The combined result is a rise in O_3 and a nondecrease in O_x. This study highlights the urgent need for dose cross-boundary cooperation to mitigate the O_3 problem in Hong Kong. China's air pollution control policy applies primarily to its large cities, with little attention to developing areas elsewhere. The experience of Hong Kong suggests that this control policy does not effectively address secondary pollution, and that a coordinated multiregional program is required.
机译：减少给定地点的地面臭氧（O_3）污染具有挑战性，部分原因是当地和遥远来源的共同作用。我们通过分析在高O_3旺季期间观察到的每天最高8小时O_3和O_3（= O_3 + NO_2）的平均每日最高浓度，来提供直接证据，表明过去十年来，日益增加的区域影响已经抵消了香港对O_3污染的本地控制努力（ 9月至11月）在空气质量监测站。在2002-2013年间，香港本地生产的O_x呈统计上显着下降的趋势。通过基于观测的模型进行的分析证实了原位O_x产量的下降，这归因于芳烃的减少。但是，同期运到香港的O_x的区域背景增加了很多，反映出中国南部/东部地区的贡献。合并的结果是O_3的增加和O_x的不减少。这项研究突显了急需进行剂量跨界合作以减轻香港的O_3问题。中国的空气污染控制政策主要适用于大城市，很少关注其他地区的发展中地区。香港的经验表明，这种控制政策不能有效地解决二次​​污染，因此需要一个协调的多区域计划。

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  • 来源
    《Environmental Science & Technology》 |2014年第18期|10769-10775|共7页
  • 作者

    Likun Xue; Tao Wang; Peter K. K. Louie; Connie W. Y. Luk; Donald R. BIake; Zheng Xu;

  • 作者单位

    Department of Civil and Environmental Engineering, the Hong Kong Polytechnic University, Hong Kong, China;

    Department of Civil and Environmental Engineering, the Hong Kong Polytechnic University, Hong Kong, China;

    Environmental Protection Department, the Government of Hong Kong Special Administrative Region, Hong Kong, China;

    Environmental Protection Department, the Government of Hong Kong Special Administrative Region, Hong Kong, China;

    Department of Chemistry, University of California at Irvine, Irvine, California, United States;

    Department of Civil and Environmental Engineering, the Hong Kong Polytechnic University, Hong Kong, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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