生态环境学报2016，Vol.25Issue(5)：821-828,8.DOI:10.16258/j.cnki.1674-5906.2016.05.014
乌鲁木齐大气细颗粒物（PM2.5）有机碳和元素碳污染特征分析
Analysis the Pollution Characteristics on Organic Carbon (OC) and Elemental Carbon (EC) of Fine Particulate Matter (PM2.5) in Urumqi
摘要
Abstract
Based on the data of atmospheric aerosol (PM2.5) form Jan. 2013 to Feb. 2014 at Meteorological Administration Tree-ring Laboratory (TRL) and Meteorological Satellite Station (HST) in the center of Urumqi, and the mass concentrations of organic carbon (OC) and elemental carbon (EC), the pollution characteristics and the possible emission sources were analyzed by optical carbon analysis. Based on the sulfur oxidation ratio (SOR) and the correlation of ions, were discussed. The results showed that, The OC and EC of PM2.5at TRL were (15.73±8.50) and (5.48±2.70)μg·m-3,and accounted for 9.15% and 3.19% of PM2.5 mass concentrations, respectively. The OC and EC of PM2.5at HST sites were (11.31±7.29) and (4.14±3.26)μg·m-3,and accounted for 9.26% and 3.06%of PM2.5 mass concentrations, respectively. Monthly variations of OC presented a single peak at TRL, but EC had no significantly difference. Seasonal variations of OC were winter (19.80±8.53)μg·m-3 > autumn (12.83±8.25)μg·m-3 > summer (9.82±2.83)μg·m-3 >spring (9.31±3.91)μg·m-3, and EC were autumn (5.72±3.35)μg·m-3 > winter (5.25±2.61)μg·m-3> summer (5.21±2.37)μg·m-3 >spring (4.89±2.31)μg·m-3. OC and EC concentration ratio showed the maximum in winter, and SOC concentrations were higher in January and February at two sites; Good correlation was found between OC and EC in spring and summer, indicating that the emission sources were simple relatively in spring and summer; on the contrary, bad correlation was found between OC and EC in autumn and winter.关键词
大气气溶胶/元素碳/有机碳/细颗粒物(PM2.5)/乌鲁木齐Key words
atmospheric aerosol/organic carbon (OC)/elemental carbon (EC)/fine particulate matter (PM2.5)/Urumqi分类
环境科学引用本文复制引用
刘新春,陈红娜,赵克蕾,钟玉婷,闫景武..乌鲁木齐大气细颗粒物（PM2.5）有机碳和元素碳污染特征分析[J].生态环境学报,2016,25(5):821-828,8.基金项目
国家自然科学基金项目（41375162；41405124；41405141）；新疆维吾尔自治区自然科学基金项目“塔克拉玛干沙漠与帕米尔高原沙尘气溶胶特性观测研究” （）
