环境空气质量标准修订后城市空气质量变化趋势及污染特征分析 ——以济南市为例
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济南市环境保护课题研究专项资金(2110199)


Analysis on the Change Trend and Pollution Characteristics of Urban Air Quality after Revision of Ambient Air Quality Standards ——Take Jinan City as An Example
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    摘要:

    2012年环境空气质量标准修订后,大气污染物监测指标与频次发生变化,在一定程度上影响了城市空气质量评价及污染特征判定。为进一步促进城市空气质量改善,为地方环境管理与决策提供科学支撑,通过运用统计分析、趋势检验及相关分析等方法研究了济南市执行新环境空气质量标准后,各时段城市空气质量及6项污染物浓度变化趋势,在此基础上识别了空气污染特征。结果表明:自2013年起,PM10、PM2.5浓度不断下降,SO2、CO持续达标,近3年间全市无污染天数占50%左右;从季节变化来看,冬季大气污染最为严重,夏秋两季空气环境质量较好;PM10、PM2.5与NO2长期处于超标水平,O3污染愈加严重。可见济南市环境空气质量虽日趋改善,但以PM10、PM2.5和O3污染为代表的复合型大气污染特征已经形成。

    Abstract:

    After the revision of the ambient air quality standard in 2012, the monitoring index and frequency of air pollutants have changed, which affects the urban air quality evaluation and the determination of pollution characteristics to some extent. In order to promote environmental air quality improvement and Provide scientific support for local environmental management and decision-making. Methods such as statistical analysis, trend checking and correlation analysis was used to investigate the change trend of the atmospheric environment quality and Six kinds of air pollutants in different periods of Jinan after the implementation of the new ambient air quality standards and identified the characteristics of air pollution on this basis. The results show that, 1) Since 2013, the concentration of PM10 and PM2.5 keeps decreasing, SO2 and CO keep reaching the standard, and the pollution-free days in the city account for about 50% in the past three years; 2) air pollution is the most serious in winter and better in summer and autumn from the perspective of seasonal changes; 3) PM10, PM2.5 and NO2 are still exceeding the standard and O3 pollution is becoming more and more serious. It is concluded that although the environmental air quality of Jinan city is improving, but the composite air pollution characteristics represented by PM10, PM2.5 and O3 pollution have been formed.

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徐梦辰,张利钧,郑囡,等. 环境空气质量标准修订后城市空气质量变化趋势及污染特征分析 ——以济南市为例[J]. 科学技术与工程, 2020, 20(13): 5422-5428.
Xu Mengchen, Zhang Lijun, Zheng Nan, et al. Analysis on the Change Trend and Pollution Characteristics of Urban Air Quality after Revision of Ambient Air Quality Standards ——Take Jinan City as An Example[J]. Science Technology and Engineering,2020,20(13):5422-5428.

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  • 收稿日期:2019-08-03
  • 最后修改日期:2019-12-10
  • 录用日期:2019-10-09
  • 在线发布日期: 2020-06-09
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