干旱区研究

Arid Zone Research >

2021 , Vol. 38 >Issue 2: 562 - 569

DOI: https://doi.org/10.13866/j.azr.2021.02.28

Ecology and Environment

Concentration characteristics and potential source of atmospheric pollutants: A case study in Urumqi

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  • 1. Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Production and Construction Corps/School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China
    2. Mount Bogda Station of Eco-environment, Xinjiang Tianchi Management Committee, Fukang 831500, Xinjiang, China
    3. Fukang Station of Desert Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China

Received date: 2020-05-20

  Revised date: 2020-07-16

  Online published: 2021-04-25

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Abstract

Meteorological parameters and pollutant concentrations in Urumqi, China, in 2017 were used to study the concentration characteristics of atmospheric pollutants and the influence of meteorological factors on pollutants. Trajectory cluster analysis, potential source contribution function analysis, and the concentration weighted trajectory method were used to assess the transport pathways and potential sources of PM2.5. The findings revealed that the most serious pollution was from PM10 and PM2.5. During periods of heating, the concentrations of atmospheric pollutants, apart from O3, were higher than those during periods where there was no heating. The heavy pollution of atmospheric particles (PM2.5 and PM10) during heating periods was ascribed primarily to low temperature, low wind speed, high relative humidity, special topographies, and temperature inversion. PM2.5 in Urumqi was transported mostly from the northwest, the short distance pathways of Nileke Town, Shawan Town, Hutubi Town, and Fukang City had greater influence on Urumqi during heating period. The main potential sources of PM2.5 were determined as being Fukang City, Hejing Town, Shawan Town, Changji City, Shawan Town, Jimusaer Town, and Manasi Town. External transport and native sources of pollution also had a great impact on the level of PM2.5 in Urumqi.

Key words： atmospheric pollutants; concentration characteristics; backward trajectory; transport pathway; potential source

Cite this article

LIU Zilong,DAI Bin,CUI Zhuoyan,LIU Yonggao,XU Zhu,ZHENG Xinjun . Concentration characteristics and potential source of atmospheric pollutants: A case study in Urumqi[J]. Arid Zone Research, 2021 , 38(2) : 562 -569 . DOI: 10.13866/j.azr.2021.02.28

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