The continuous analysis of nitrate and ammonium in aerosols by the steam   jet aerosol collector (SJAC): extension and validation of the   methodology

doi:10.1016/S1352-2310(00)00556-2

CORC > 北京大学 > 环境科学与工程学院

	The continuous analysis of nitrate and ammonium in aerosols by the steam jet aerosol collector (SJAC): extension and validation of the methodology
	Slanina, J ; ten Brink, HM ; Otjes, RP ; Even, A ; Jongejan, P ; Khlystov, A ; Waijers-Ijpelaan, A ; Hu, M
刊名	大气环境
	2001
关键词	aerosol chemical analysis nitrate ammonium on-line THERMODENUDER SYSTEM ION CHROMATOGRAPHY AMBIENT AIR DENUDER
DOI	10.1016/S1352-2310(00)00556-2
英文摘要	Classical methodology based on the application of filters for sampling, followed by extraction and analysis, introduces severe artifacts for semi-volatile compounds like ammonium nitrate. These filter methods do not meet the requirements for the assessment of the impact of aerosols on acidification, air quality and especially on the radiative balance, in terms of required speed, detection limits and selectivity. These artifacts are avoided by using a steam jet aerosol collector sampler, based on scavenging of aerosols by droplet formation, in combination with on-line analytical techniques such as ion-chromatography for nitrate and membrane separation followed by conductivity detection for ammonium. The SJAC sampler combines very low blanks with high efficiency of collection of particles. The ammonium detector and the IC system, based on 1-point internal standard calibration in combination with correction for curved calibration graphs, enables detection of ammonium and nitrate at background conditions, the detection limit is about 0.02 mug m(-3) of ammonium and nitrate. Accuracy is, depending on ambient concentration, in the order of 5-10% relative, at a range of 0.05-50 mug m(-3). The: time resolution is 15-120min, depending on required detection limit, and is short enough for continuously monitoring the chemical composition of aerosols. Quality assurance and quality control experiments and intercomparison experiments with classical filter methods, thermo-denuder systems, denuder difference methods and other continuous monitoring techniques have shown that the results are reliable. The instrument has successfully been employed in field campaigns in Europe and the US. (C) 2001 Elsevier Science Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000168491800008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; Meteorology & Atmospheric Sciences; SCI(E); EI; 85; ARTICLE; 13; 2319-2330; 35
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/210910]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Slanina, J,ten Brink, HM,Otjes, RP,et al. The continuous analysis of nitrate and ammonium in aerosols by the steam jet aerosol collector (SJAC): extension and validation of the methodology[J]. 大气环境,2001.
APA	Slanina, J.,ten Brink, HM.,Otjes, RP.,Even, A.,Jongejan, P.,...&Hu, M.(2001).The continuous analysis of nitrate and ammonium in aerosols by the steam jet aerosol collector (SJAC): extension and validation of the methodology.大气环境.
MLA	Slanina, J,et al."The continuous analysis of nitrate and ammonium in aerosols by the steam jet aerosol collector (SJAC): extension and validation of the methodology".大气环境 (2001).