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首页> 外文期刊>Oceanographic Literature Review >Pollution characteristics, transport pathways, and potential source regions of pnii.s and pnito in changchun city in 2018
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Pollution characteristics, transport pathways, and potential source regions of pnii.s and pnito in changchun city in 2018

机译：2018年长春市PNII.S和Pnito污染特征，运输途径和潜在源区

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摘要

Air pollution has attracted increasing attention in recent years. Cluster analysis, scene analysis, and the potential source contribution function (PSCF), based on the backward trajectory model, were used to identify the transport pathways and potential source regions of PM_(2.5) and PM_(10) (particulate matter with an aerodynamic diameter of not more than 2.5 μm and 10 μm) in Changchun in 2018. In addition, the PSCF was slightly improved. The highest average monthly concentrations of PM_(2.5) and PM_(10) appeared in March and April, when they reached 53.9μg/m~3 and 120.0 μg/m~3, respectively. The main potential source regions of PM_(2.5) and PM_(10) were generally similar: western Jilin Province, northwestern Inner Mongolia, northeastern Liaoning Province, and the Yellow Sea region. The secondary potential source regions were southern Russia, central Mongolia, western Shandong Province, eastern Hebei Province, and eastern Jiangsu Province. The northwest and southwest directions were found to be the two pathways that mainly affect the air quality of Changchun City. Moreover, the northwestern pathway had a larger potential contribution source area than the southwestern pathway. The airflow in the southwest direction came from Liaoning Province, Shandong Province, and the Yellow Sea region. This mainly occurred in summer; its transmission distance was short; it had a relatively higher weight potential source contribution function (WPSCF) value; it can be regarded as a local source; and its representative pollutants were SO_2 (sulfur dioxide), CO (carbon monoxide), and O_3 (ozone). The northwestern pathway passed through Russia, Mongolia, and Inner Mongolia. The transmission distance of this pathway was longer; it had a relatively lower WPSCF value; it can be considered as a natural source to a certain extent; it mainly occurred in autumn and, especially, in winter; and the representative pollutants of this pathway were NO (nitric oxide), NOx (nitrogen oxide), PM_(2.5), and PM_(10).
机译：近年来，空气污染引起了越来越关注。基于向后轨迹模型的聚类分析，场景分析和潜在源贡献功能（PSCF）用于识别PM_（2.5）和PM_（10）的传输途径和潜在源区（具有空气动力学的颗粒物质2018年长春直径不超过2.5μm和10μm）。此外，PSCF略有改善。 PM_（2.5）和PM_（10）的最高平均每月浓度分别出现在3月和4月，分别达到53.9μg/ m〜3和120.0μg/ m〜3。 PM_（2.5）和PM_（10）的主要潜在源区普遍相似：吉林省西北部，内蒙古西北部，东北辽宁省和黄海地区。二次潜在源区是俄罗斯南部，蒙古中部，西山东省，河北省东部和江苏省东部。发现西北和西南方向是两种途径，主要影响长春市空气质量。此外，西北途径具有比西南途径更大的潜在贡献源区。西南方向的气流来自辽宁省，山东省和黄海地区。这主要发生在夏天;其传输距离短;它具有相对较高的权重潜在源贡献函数（WPSCF）值;它可以被视为当地来源;其代表性污染物是SO_2（二氧化硫），CO（一氧化碳）和O_3（臭氧）。西北途径通过俄罗斯，蒙古和内蒙古。该途径的传输距离更长;它具有相对较低的WPSCF值;它可以在一定程度上被视为自然来源;它主要发生在秋季，特别是在冬季;该途径的代表性污染物是否（一氧化氮），NOx（氮氧化物），PM_（2.5）和PM_（10）。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2127-2127|共1页
  • 作者

    F. Meng; J. Wang; T. Li; C. Fang;

  • 作者单位

    College of New Energy and Environment Jilin University Changchun 130012 China;

    College of New Energy and Environment Jilin University Changchun 130012 China;

    College of New Energy and Environment Jilin University Changchun 130012 China;

    College of New Energy and Environment Jilin University Changchun 130012 China;

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