Development of stripping coil-ion chromatograph method and intercomparison with CEAS and LOPAP to measure atmospheric HONO

doi:10.1016/j.scitotenv.2018.07.244

CORC > 化学研究所 > 中国科学院化学研究所

	Development of stripping coil-ion chromatograph method and intercomparison with CEAS and LOPAP to measure atmospheric HONO
	Xue, Chaoyang 1,3; Ye, Can 1,3; Ma, Zhuobiao 1,3; Liu, Pengfei 1,3; Zhang, Yuanyuan 1,3; Zhang, Chenglong 1,3; Tang, Ke 4; Zhang, Wenqian 5; Zhao, Xiaoxi 1,3; Wang, Yuzheng 1,3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019
卷号	646 页码:187-195
关键词	Hono Wet Chemical Method No2 So2 Field Comparisons Statistical Analysis
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2018.07.244
英文摘要	Nitrous acid (HONO) is the major precursor of OH radicals in polluted areas. Accurate measurement of HONO provides vital evidence for exploring the formation of secondary pollution. Stripping coil (SC) equipped with ion chromatograph (IC) or spectrograph as one of wet chemical methods has been already used to measure HONO. The reliability of the method mainly depends on the collection efficiency and the interference from other species. In this study, a SC-IC method was set up to measure HONO. The performance of the method was assessed in the chamber using two kinds of absorption solutions i.e. ultrapure water and 25 mu M Na2CO3 solution under different concentrations of SO2. Results indicated that HONO concentrations absorbed by ultrapure water and Na2CO3 solution were almost identical in the absence of SO2 in the chamber and both the collection efficiencies were N99%. However, the collection efficiency of ultrapure water decreased with the increase of SO2, indicating that the presence of SO2 resulted in the penetration of HONO. The collection efficiency kept >90% when the concentration of SO2 was no >23 ppbv. Comparing with the situation without SO2, HONO performed a remarkable increase with the presence of SO2 when using Na2CO3 absorption solution, indicating that the extra generation of HONO from the reaction between SO2 and NO2 in alkaline solution. Consequently, ultrapure water as the absorption solution could provide a high collection efficiency and avoid the interferences from SO2 when the concentration of SO2 was below 23 ppbv. High correlations (slope = 0.94-1.06, r(2) > 0.90) were found during the intercomparisons between SC-IC and other three techniques, suggesting the SC-IC method developed in this study was able to measure atmospheric HONO in the field campaigns. (C) 2018 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000445164800020
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/43095]
专题	中国科学院化学研究所
通讯作者	Mu, Yujing
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Anhui, Peoples R China 5.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Xue, Chaoyang,Ye, Can,Ma, Zhuobiao,et al. Development of stripping coil-ion chromatograph method and intercomparison with CEAS and LOPAP to measure atmospheric HONO[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,646:187-195.
APA	Xue, Chaoyang.,Ye, Can.,Ma, Zhuobiao.,Liu, Pengfei.,Zhang, Yuanyuan.,...&Mu, Yujing.(2019).Development of stripping coil-ion chromatograph method and intercomparison with CEAS and LOPAP to measure atmospheric HONO.SCIENCE OF THE TOTAL ENVIRONMENT,646,187-195.
MLA	Xue, Chaoyang,et al."Development of stripping coil-ion chromatograph method and intercomparison with CEAS and LOPAP to measure atmospheric HONO".SCIENCE OF THE TOTAL ENVIRONMENT 646(2019):187-195.