Institutional Repository of Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China
Ultra-sensitive measurement of peroxy radicals by chemical amplification broadband cavity-enhanced spectroscopy | |
Chen, Yang1,2; Yang, Chengqiang1,3; Zhao, Weixiong1; Fang, Bo1; Xu, Xuezhe1; Gai, Yanbo1; Lin, Xiaoxiao1; Chen, Weidong4; Zhang, Weijun1,3 | |
2016 | |
发表期刊 | ANALYST |
摘要 | The PERCA (PEroxy Radical Chemical Amplification) technique, which is based on the catalytic conversion of ambient peroxy radicals (HO2 and RO2, where R stands for any organic chain) to a larger amount of nitrogen dioxide (NO2) amplified by chain reactions by adding high concentrations of NO and CO in the flow reactor, has been widely used for total peroxy radical RO2* (RO2* = HO2 + Sigma RO2) measurements. High-sensitivity and accurate measurement of the NO2 concentration plays a key role in accurate measurement of the RO2* concentration. In this paper, we report on the development of a dual-channel chemical amplification instrument, which combined the PERCA method with the incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS), for peroxy radical measurements. The IBBCEAS method is capable of simultaneously measuring multiple species with high spectral identification, and can directly measure NO2 concentrations with high sensitivity and high accuracy and without interference from other absorbers. The detection sensitivity of the developed PERCA-IBBCEAS instrument for HO2 radicals was estimated to be about 0.9 pptv (1 sigma, 60 s) at a relative humidity (RH) of 10%. Considering the error sources of NO2 detection, CL determination, and the radical partitioning in the air sample, the total uncertainty of RO2* measurements was about 16-20%. |
文章类型 | Article |
WOS标题词 | Science & Technology ; Physical Sciences |
DOI | 10.1039/c6an01038e |
关键词[WOS] | PHASE-SHIFT SPECTROSCOPY ; RING-DOWN SPECTROSCOPY ; ABSORPTION-SPECTROSCOPY ; NITROGEN-DIOXIDE ; WATER-VAPOR ; DIODE-LASER ; ATMOSPHERIC MEASUREMENTS ; AEROSOL EXTINCTION ; AMBIENT NO2 ; SPECTROMETER |
收录类别 | SCI |
语种 | 英语 |
项目资助者 | National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; National Natural Science Foundation of China(41375127 ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Natural Science Foundation of Anhui Province(1508085J03) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; Youth Innovation Promotion Association CAS(2016383) ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 41575125 ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) ; 91544228) |
WOS研究方向 | Chemistry |
WOS类目 | Chemistry, Analytical |
WOS记录号 | WOS:000385152600025 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/21618 |
专题 | 中科院安徽光学精密机械研究所 |
作者单位 | 1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Lab Atmospher Physicochem, Hefei 230031, Anhui, Peoples R China 2.Anhui Univ, Sch Phys & Mat Sci, Hefei 230601, Anhui, Peoples R China 3.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Anhui, Peoples R China 4.Univ Littoral Cote dOpale, Lab Physicochim Atmosphere, F-59140 Dunkerque, France |
第一作者单位 | 中科院安徽光学精密机械研究所 |
推荐引用方式 GB/T 7714 | Chen, Yang,Yang, Chengqiang,Zhao, Weixiong,et al. Ultra-sensitive measurement of peroxy radicals by chemical amplification broadband cavity-enhanced spectroscopy[J]. ANALYST,2016,141(20):5870-5878. |
APA | Chen, Yang.,Yang, Chengqiang.,Zhao, Weixiong.,Fang, Bo.,Xu, Xuezhe.,...&Zhang, Weijun.(2016).Ultra-sensitive measurement of peroxy radicals by chemical amplification broadband cavity-enhanced spectroscopy.ANALYST,141(20),5870-5878. |
MLA | Chen, Yang,et al."Ultra-sensitive measurement of peroxy radicals by chemical amplification broadband cavity-enhanced spectroscopy".ANALYST 141.20(2016):5870-5878. |
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