中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Single Photon Ionization and Chemical Ionization Combined Ion Source Based on a Vacuum Ultraviolet Lamp for Orthogonal Acceleration Time-of-Flight Mass Spectrometry
作者: Hua, Lei1, 2;  Wu, Qinghao1, 2;  Hou, Keyong1;  Cui, Huapeng1, 2;  Chen, Ping1, 2;  Wang, Weiguo1;  Li, Jinghua1;  Li, Haiyang1
刊名: ANALYTICAL CHEMISTRY
发表日期: 2011-07-01
DOI: 10.1021/ac200742r
卷: 83, 期:13, 页:5309-5316
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: A novel combined ion source based on a vacuum ultraviolet (VUV) lamp with both single photon ionization (SPI) and chemical ionization (CI) capabilities has been developed for an orthogonal acceleration time-of-flight mass spectrometer (oaTOFMS). The SPI was accomplished using a commercial 10.6 eV krypton discharge lamp with a photon flux of about 10(11) photons s(-1), the CI was achieved through ion-molecule reactions with O(2)(+) reactant ions generated by photoelectron ionization at medium vacuum pressure (MVP). To achieve high ionization efficiency, the ion source pressure was elevated to 0.3 mbar and the photoionization length was extended to 36 mm. As a result, limits of detection (LODs) down to 3, 4, and 6 ppbv were obtained for benzene, toluene, and p-xylene in MVP-SPI mode, and values of 8 and 10 ppbv were obtained for toluene and chloroform, respectively, in SPI-CI mode. As it is feasible to switch between MVP-SPI mode and SPI-CI mode rapidly, this system is capable of monitoring complex organic mixtures with a wide range of ionization energies (IEs). The analytical capacity of this system was demonstrated by measuring dehydrogenation products of long-chain paraffins to olefins through direct capillary sampling and drinking water disinfection byproducts from chlorine through a membrane interface.
关键词[WOS]: ELECTRON-IMPACT IONIZATION ;  ATMOSPHERIC-PRESSURE PHOTOIONIZATION ;  CHAIN-PARAFFIN DEHYDROGENATION ;  ONLINE GAS-ANALYSIS ;  ORGANIC-COMPOUNDS ;  PHOTOELECTRON IONIZATION ;  MULTIPHOTON IONIZATION ;  PHOTOEMISSION ELECTRON ;  THERMAL-DECOMPOSITION ;  LASER-DESORPTION
语种: 英语
WOS记录号: WOS:000292280900041
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142800
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Hua, Lei,Wu, Qinghao,Hou, Keyong,et al. Single Photon Ionization and Chemical Ionization Combined Ion Source Based on a Vacuum Ultraviolet Lamp for Orthogonal Acceleration Time-of-Flight Mass Spectrometry[J]. ANALYTICAL CHEMISTRY,2011,83(13):5309-5316.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Hua, Lei]'s Articles
 [Wu, Qinghao]'s Articles
 [Hou, Keyong]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Hua, Lei]‘s Articles
 [Wu, Qinghao]‘s Articles
 [Hou, Keyong]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace