摘要
概述了PM2.5中有机碳/元素碳(OC/EC)的分析方法应用进展,分析了滤膜样品攫取方式对测定结果的影响,探讨了IMPROVE-A法、NIOSH 5040法和Quartz法对OC/EC/TC测定结果的可比性。结果表明,IMPROVE-A法、NIOSH 5040法和Quartz法对TC的测定结果无显著性差异(tTC<t0.05(2)),NIOSH 5040法和Quartz法对OC/EC的测定结果也无显著性差异(tOC<t0.05(2),tEC<t0.05(2)),但IMPROVE-A法与NIOSH 5040法、Quartz法对OC/EC的测定结果均存在显著性差异(tOC>t0.01(2),tEC>t0.01(2))。鉴于OC/EC比值在颗粒物源解析中的重要意义,而目前国内外还未建立OC/EC的标准分析方法,由此提出在颗粒物源解析中规范OC/EC测定方法的迫切性。
The research and application progress on organic carbon/elemented carbon （OC / EC ） analysis methods of atmospheric particulates were summarized. The influences of the grab way on determination results for membrane samples were analyzed, and the comparability on determination results of OC / EC / TC （total carbon, TC） with IMPROVE-A, NIOSH 5040 and Quartz method were studied. The results showed that there was no significant difference for the determination of total carbon （TC） among IMPROVE-A, NIOSH 5040 and Quartz method （ tTC〈t0.05 （2））. There was also no significant difference for the determination of OC/EC between NIOSH 5040 and Quartz method （ tOC〈t0.05（2） , tEc〈t0.05（2） ）. However, IMPROVE-A and NIOSH 5040 method or Quartz method, there were significant differences for the determination of OC/EC （ tOC 〉 t0.01 （2） , tEC 〉 t0.01 （2））＂ Since the OC/EC ratio is of great importance in source apportionment of particulates, and there is no standardized method for OC/EC determination, thus it＇s very necessary to standardize the OC / EC analysis method for source apportionment.
出处
《江汉大学学报（自然科学版）》
2016年第1期11-17,共7页
Journal of Jianghan University：Natural Science Edition
基金
湖北省教育厅科学技术研究项目(B2015238)
关键词
PM2.5
有机碳(OC)
元素碳(EC)
测定
fine particulate matter （PM2. 5）
organic carbon （OC）
elemental carbon （EC）
determination
