昌吉市大气中PM2.5在线源解析及其对策研究

Online Source Analysis and Countermeasures of PM 2.5 in Changji City

为探讨昌吉市大气颗粒物污染特征及分布状况,2017年1月1日至2月16日利用广州禾信分析仪器有限公司SPAMS-0515单颗粒气溶胶飞行时间质谱仪,对昌吉市2个具有代表性的监测点位,选择全年污染较严重的冬季进行1个月的自动源解析监测工作。结果显示:昌吉市污染来源主要为扬尘、生物质燃烧、机动车尾气、燃煤、工业源、二次无机源以及其他7大来源。通过对污染源贡献比例分析可以看出,对总颗粒物贡献率最大的是燃煤源,其占比为32.5%,排在第二位的是机动车尾气源,占比为25.4%,第三位是工业工艺源,占比为15.8%,扬尘源占比为6.4%,生物质燃烧占比为3.0%。

In order to explore changji atmospheric particulate matter pollution characteristics and distribution,the SPAMs-0515 single-particle aerosol time-of flight mass spectrometer manufactured by Guangzhou Hexin Analytical Instrument Co.,Ltd.was used to perform automatic source analysis monitoring of two representative monitoring points in Changji city for one month since January 1,2017,to February 16.The results show that the main sources of pollution in Changji city are dust,biomass combustion,motor vehicle exhaust,coal burning,industrial sources,secondary inorganic sources and other 7 sources.Through the analysis of the contribution ratio of pollution sources,it can be seen that the source that contributes the most to the total particulate matter is coal burning,accounting for 32.5%;motor vehicle exhaust,ranking the second,accounting for 25.4%;industrial process source,accounting for 15.8%;dust source,accounting for 6.4%;and biomass combustion,accounting for 3.0%.