干旱区研究2024，Vol.41Issue(8)：1323-1330,8.DOI:10.13866/j.azr.2024.08.06
乌鲁木齐市PM2.5中碳组分污染特征及来源解析
Analysis of carbon component pollution characteristics and sources of PM2.5 in Urumqi City
摘要
Abstract
To investigate the concentration of PM2.5,pollution characteristics,and sources of carbon components in the urban area of Urumqi from July 3,2023,to December 31,2023,air samples were collected and monitoring and analysis were performed in accordance with experimental procedures.The average concentration of PM2.5 in Urumqi is 20.1±8.1µg·m-3,with average concentrations of OC and EC of 3.2±1.0 and 0.6±0.2µg·m-3,respec-tively,and a trend for higher concentrations during the heating season than the nonheating season.Good correla-tions between OC and EC were observed in various time periods,suggesting a similar source for OC and EC.The estimated average total carbon aerosol concentration is 7.52±3.66µg·m-3,accounting for approximately 16%of the PM2.5 concentration,and the concentration of secondary organic carbon(SOC)is 2.11±1.43µg·m-3,with an SOC/OC ratio of 47.47%±12.69%,indicating that secondary organic carbon(SOC)accounts for nearly 50%of the OC in Urumqi's atmosphere.Principal component analysis revealed that the main sources of carbon compo-nents in PM2.5 are coal combustion emissions and vehicular exhaust.Overall,severe atmospheric pollution per-sists during the heating season.关键词
大气污染/有机碳/元素碳/源解析/乌鲁木齐市Key words
atmospheric pollution/organic carbon/elemental carbon/source apportionment/Urumqi City引用本文复制引用
魏疆,宋丹丹,赵丽莉,赵彩欣,王凌羲..乌鲁木齐市PM2.5中碳组分污染特征及来源解析[J].干旱区研究,2024,41(8):1323-1330,8.基金项目
新疆财经大学高层次人才专项(博士启动基金)项目(2022XGC013) （博士启动基金）
