气相色谱-质谱法测定大学校园内PM2.5中的正构烷烃  

Meteorological chromatography-mass spectrometry determination of n-alkanes in PM2.5 in university campus

作　　者：赵明明[1] 张金生[1] 李丽华[1] 赵丽[1] 杨培[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

出　　处：《应用化工》2014年第8期1509-1511,共3页Applied Chemical Industry

基　　金：辽宁省自然科学基金项目(201202124)

摘　　要：利用气相色谱-质谱技术分析辽宁省抚顺市辽宁石油化工大学采样点夏季和冬季大气PM2.5颗粒物中的正构烷烃组成，运用Cmax、CPI地球化学参数对污染源进行了初步示综研究，并对污染程度进行分析。结果表明，抚顺市夏季空气中PM2.5粒子中正构烷烃主要来源植物污染，冬季主要是人为污染，夏季PM2.5质量浓度为31.7～86.7μg/m3，碳优势指数CPI为1.76～2.06，植物蜡参数WaxC为33.8%～42.3%。冬季PM2.5质量浓度为33.3～192.3μg/m3，碳优势指数CPI为1.03～1.87，植物蜡参数%WaxC为5.3%～28.1%。The n-alkanes in PM2 . 5 airborne particles in summer and in winter at Shihua University sites in Fushun of Liaoning were determined by gas chromatography-mass spectrometry. Molecular geochemical parameters such as Cmax,CPI were used to preliminarily identify the pollutant sources and to determine the n-alkanes pollution conditions. The results suggested that the pollutant source of n-alkanes of PM2. 5 airborne particles in summer over Fushun major source of plant pollution,source of major man-made pol-lution in winter,PM2. 5 mass concentration of 31. 7 ～86. 7 μg/m3 ,CPI values were 1. 76 ~2. 06, WaxC% values were of 33. 8% ~42. 3% in summer. PM2. 5 mass concentration of 33. 3~192. 3 μg/m3 , CPI values were 1. 03~1. 87,WaxC% values were of 5. 3% ~28. 1% in winter.

关 键 词：PM2 5 大气颗粒物 正构烷烃 大学校园 

分 类 号：O656.32[理学—分析化学]