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An automated method for thermal-optical separation of aerosol organic/elemental carbon for C-13 analysis at the sub-mu gC level: A comprehensive assessment

文献类型：期刊论文

作者Yao, Peng1; Ni, Haiyan1,2; Paul, Dipayan1; Masalaite, Agne3; Huang, Ru-Jin2; Meijer, Harro A. J.1; Dusek, Ulrike1
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2022-01-15
卷号804页码:10
关键词Elemental carbon C-13 analysis Automated method Pyrolysis Isotope fractionation
ISSN号0048-9697
DOI10.1016/j.scitotenv.2021.150031
通讯作者Huang, Ru-Jin(rujin.huang@ieecas.cn) ; Dusek, Ulrike(u.dusek@rug.nl)
英文摘要We describe and thoroughly evaluate a method for C-13 analysis in different fractions of carbonaceous aerosols, especially elemental carbon (EC). This method combines a Sunset thermal-optical analyzer and an isotope ratio mass spectrometer (IRMS) via a custom-built automated separation, purification, and injection system. Organic carbon (OC), EC, and other specific fractions from aerosol filter samples can be separated and analyzed automatically for C-13 based on thermal-optical protocols (EUSAAR_2 in this study) at sub-pgC levels. The main challenges in isolating EC for C-13 analysis are the possible artifacts during OC/EC separation, including the premature loss of EC and the formation of pyrolyzed OC (pOC) that is difficult to separate from EC. Since those artifacts can be accompanied with isotope fractionation, their influence on the stable isotopic composition of EC was comprehensively investigated with various test compounds. The results show that the thermal-optical method is relatively successful in OC/EC separation for C-13 analysis. The method was further tested on real aerosols samples. For biomass-burning source samples, (partial) inclusion of pOC into CC has negligible influence on the C-13 signature of CC. However, for ambient samples, the influence of pOC on the C-13 signature of CC can be significant, if it is not well separated from CC, which is true for many current methods for measuring C-13 on EC. A case study in Xi'an, China, where pOC is enriched in C-13 compared to EC, shows that this can lead to an overestimate of coal and an underestimate of traffic emissions in isotope-based source apportionment. (C) 2021 Elsevier B.V. All rights reserved.
WOS关键词SECONDARY ORGANIC AEROSOL ; SOURCE APPORTIONMENT ; ELEMENTAL CARBON ; BLACK CARBON ; ATMOSPHERIC AEROSOLS ; PARTICULATE MATTER ; ISOTOPE RATIOS ; BROWN CARBON ; HAZE EVENTS ; RADIOCARBON
资助项目National Key Research and Development Program of China[2017YFC0212701] ; program of China Scholarships Council[201806320346]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000701855500003
出版者ELSEVIER
资助机构National Key Research and Development Program of China ; program of China Scholarships Council
源URL[http://ir.ieecas.cn/handle/361006/17091]  
专题地球环境研究所_粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Huang, Ru-Jin; Dusek, Ulrike
作者单位1.Univ Groningen, Ctr Isotope Res CIO, Energy & Sustainabil Res Inst Groningen ESRIG, NL-9747 AG Groningen, Netherlands
2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Inst Earth Environm, State Key Lab Loess & Quaternary Geol,Key Lab Aer, Xian 710061, Peoples R China
3.State Res Inst Ctr Phys Sci & Technol, Vilnius, Lithuania
推荐引用方式
GB/T 7714		 Yao, Peng,Ni, Haiyan,Paul, Dipayan,et al. An automated method for thermal-optical separation of aerosol organic/elemental carbon for C-13 analysis at the sub-mu gC level: A comprehensive assessment[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,804:10.
APA Yao, Peng.,Ni, Haiyan.,Paul, Dipayan.,Masalaite, Agne.,Huang, Ru-Jin.,...&Dusek, Ulrike.(2022).An automated method for thermal-optical separation of aerosol organic/elemental carbon for C-13 analysis at the sub-mu gC level: A comprehensive assessment.SCIENCE OF THE TOTAL ENVIRONMENT,804,10.
MLA Yao, Peng,et al."An automated method for thermal-optical separation of aerosol organic/elemental carbon for C-13 analysis at the sub-mu gC level: A comprehensive assessment".SCIENCE OF THE TOTAL ENVIRONMENT 804(2022):10.

入库方式： OAI收割

来源：地球环境研究所

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