伊宁市冬季气态污染物浓度变化特征

Variation Characteristics of Gaseous Pollutant Concentration in Winter in Yining City

基于2020年冬季伊宁市SO_(2)、NO_(2)、CO和O_(3)等气态污染物监测数据,采用数理统计方法,研究了伊宁市气态污染物浓度变化特征。结果表明:伊宁市城区冬季SO_(2)和O_(3)-8h均达标,但NO_(2)和CO第95百分位数浓度分别超标0.33倍和0.22倍,城区燃煤和机动车排放对空气质量有明显影响。工作日SO_(2)、NO_(2)、CO平均浓度分别比周末高出7.4%、13.4%和19.2%,O_(3)-8h则相反。SO_(2)与NO_(2)、CO这3种污染物来源相近。

Based on the monitoring data of SO_(2),NO_(2),Co,O_(3) and other gaseous pollutants in Yining City in the winter of 2020,the concentration variation characteristics of gaseous pollutants in Yining City were studied by mathematical statistics.The results show that SO_(2) and O_(3)-8h in winter in Yining City are up to the standard,but the 95th percentile concentrations of NO_(2) and CO exceed the standard by 0.33 times and 0.22 times respectively.The emission of coal and motor vehicles in urban area has a signif icant impact on air quality.The average concentrations of SO_(2),NO_(2) and CO on weekdays were 7.4%,13.4% and 19.2%higher than those on weekends,respectively,while O3-8h was the opposite.The sources of SO_(2),NO_(2) and CO are similar.