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伊宁市冬季气态污染物浓度变化特征

2021-12-02辜天军

科技创新导报 2021年20期

辜天军

摘  要:基于2020年冬季伊宁市SO2、NO2、CO和O3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SO2和O3-8h均达标,但NO2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SO2、NO2、CO平均浓度分别比周末高出7.4%、13.4%和19.2%,O3-8h则相反。SO2与NO2、CO这3种污染物来源相近。

关键词:伊宁市  冬季  气态污染物  空气质量  来源

中图分类号:X51 文献标识码:A 文章编号:1674-098X(2021)07(b)-0060-04

Variation Characteristics of Gaseous Pollutant Concentration in Winter in Yining City

GU Tianjun

(Office of the Third Commissioner of Xinjiang Ecological Environment Supervision, Xinjiang Department of Ecological Environment, Urumqi, Xinjiang Uygur Autonomous Region, 830063 China)

Abstract: Based on the monitoring data of SO2, NO2, Co, O3 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 SO2 and O3-8h in winter in Yining City are up to the standard, but the 95th percentile concentrations of NO2 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 significant impact on air quality. The average concentrations of SO2, NO2 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 SO2, NO2 and CO are similar.

Key Words: Yining City; Winter; Gaseous pollutants; Air quality; Source

随着经济快速增长,城市化进程不断加快,能源消费增加迅速,大气污染问题日益突出也越来越受到关注。大气污染不仅影响环境空气质量、气候变化与经济社会发展,对人体健康也产生重要作用。目前,我国大气污染呈现区域性、复合性和长期性的特点[1,2]。地处伊犁河谷盆地中央的伊宁市,近年来经济发展加快,机动车保有量稳步增加,冬季空气污染问题受到广大市民关注。针对大气污染问题,伊宁市通过调整优化产业结构、控制煤炭消费量、调整运输结构、提升机动车排放水平、治理散乱污企业、工业企业升级改造和强化区域联防联控等系列措施,取得了一定成效。本研究基于2020年冬季伊宁市SO2、NO2、CO等气态污染物监测数据,研究了冬季各类气态污染物浓度变化特征和相互關系,为该地区大气污染治理和防控提供科学参考。

1  数据与方法

1.1 研究区概况

伊宁市地处伊犁河谷盆地中央,东连伊宁县,西邻霍城县,南濒伊犁河,北依科古尔琴山。……

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