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Fugitive Road Dust PM_(2.5) Emissions and Their Potential Health Impacts

机译：逃亡道路尘埃PM_（2.5）排放及其潜在的健康影响

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摘要

Fugitive road dust (FRD) particles emitted by traffic-generated turbulence are an important contributor to urban ambient fine particulate matter (PM2.5). Especially in urban areas of developing countries, FRD PM2.5 emissions are a serious environmental threat to air quality and public health. FRD PM2.5 emissions have been neglected or substantially underestimated in previous study, resulting in the underestimation of modeling PM concentrations and estimating their health impacts. This study constructed the FRD PM2.5 emissions inventory in a major inland city in China (Lanzhou) in 2017 at high-resolution (500 X 500 m(2)), investigated the spatiotemporal characteristics of the FRD emissions in different urban function zones, and quantified their health impacts. The FRD PM2.5 emission was approximately 1141 +/- 71 kg d(-1), accounting for 24.6% of total PM2.5 emission in urban Lanzhou. Spatially, high emissions exceeding 3 x 10(4) mu g m(-2 )d(-1) occurred over areas with smaller particle sizes, larger traffic intensities, and more frequent construction activities. The estimated premature mortality burden induced by FRD PM2.5 exposure was 234.5 deaths in Lanzhou in 2017. Reducing FRD emissions are an important step forward to protect public health in many developing urban regions.
机译：交通产生的湍流发出的逃逸道路灰尘（FRD）颗粒是城市环境细颗粒物质（PM2.5）的重要贡献者。特别是在发展中国家的城市地区，FRD PM2.5排放是对空气质量和公共卫生的严重环境威胁。 FRD PM2.5排放在先前的研究中被忽略或大幅低估，导致低估了PM浓度和估算其健康影响的估算。本研究在2017年在中国的主要内陆城市（Lanzhou）在高分辨率（500 x 500米（2））中建立了FRD PM2.5排放量库存，调查了不同城市功能区的FRD排放的时空特征，并量化了他们的健康影响。 FRD PM2.5发射约为1141 +/- 71千克D（-1），占兰州市城市总PM2.5排放量的24.6％。在空间上，超过3×10（4）mu g m（-2）d（-1）的高排放在粒径较小，交通强度和更频繁的施工活动的区域上发生。 2017年兰州的估计过早死亡负担是兰州兰州的234.5人。减少FRD排放是保护许多发展城市地区的公共卫生的重要一步。

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  • 来源
    《Environmental Science & Technology》 |2019年第14期|8455-8465|共11页
  • 作者

    Chen Siyu; Zhang Xiaorui; Lin Jintai; Huang Jianping; Zhao Dan; Yuan Tiangang; Huang Kangning; Luo Yuan; Jia Zhuo; Zang Zhou; Qiu Yuean; Xie Li;

  • 作者单位

    Lanzhou Univ Minist Educ Key Lab Semiarid Climate Change Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Minist Educ Key Lab Semiarid Climate Change Lanzhou 730000 Gansu Peoples R China;

    Peking Univ Sch Phys Dept Atmospher & Ocean Sci Lab Climate & Ocean Atmosphere Studies Beijing 100871 Peoples R China;

    Lanzhou Univ Minist Educ Key Lab Semiarid Climate Change Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Minist Educ Key Lab Semiarid Climate Change Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Minist Educ Key Lab Semiarid Climate Change Lanzhou 730000 Gansu Peoples R China;

    Yale Univ Yale Sch Forestry & Environm Studies New Haven CT 06511 USA;

    Lanzhou Univ Minist Educ Key Lab Semiarid Climate Change Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Coll Earth & Environm Sci Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Minist Educ Key Lab Semiarid Climate Change Lanzhou 730000 Gansu Peoples R China;

    Sun Yat Sen Univ Sch Geog & Planning Guangzhou 510275 Guangdong Peoples R China|Sun Yat Sen Univ Guangdong Key Lab Urbanizat & Geosimulat Guangzhou 510275 Guangdong Peoples R China;

    Gansu Prov Matern & Child Care Hosp Lanzhou 730050 Gansu Peoples R 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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