Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection
文献类型：期刊论文
| 作者 | Chen, Shasha1,2; Wang, Weiguo1; Zhou, Qinghua1,2; Chen, Chuang1; Peng, Liying1,2; Hua, Lei1; Li, Yang1; Hou, Keyong1; Li, Haiyang1 |
| 刊名 | analytical chemistry
 |
| 出版日期 | 2014-03-04 |
| 卷号 | 86期号:5页码:2687-2693 |
| 英文摘要 | ion mobility spectrometry (ims) has become the most deployed technique for on-site detection of trace explosives, and the reactant ions generated in the ionization source are tightly related to the performances of ims. combination of multiform reactant ions would provide more information and is in favor of correct identification of explosives. fast switchable co3-(h2o)(n) and o-2(-)(h2o)(n) reactant ions were realized in a dopant-assisted negative photoionization ion mobility spectrometer (danp-ims). the switching could be achieved in less than 2 s by simply changing the gas flow direction. up to 88% of the total reactant ions were co3-(h2o)(n) in the bidirectional mode, and 89% of that were o-2(-)(h2o)(n) in the unidirectional mode. the characteristics of combination of co3-(h2o)(n) and o-2(-)(h2o)(n) were demonstrated by the detection of explosives, including 2,4,6-trinitrotoluene (tnt), cyclo-1,3,5-trimethylene-2,4,6-trinitramine (rdx), ammonium nitrate fuel oil (anfo), and black powder (bp). for tnt, rdx, and bp, product ions with different reduced mobility values (k-0) were observed with co3-(h2o)(n) and o-2(-)(h2o)(n), respectively, which is a benefit for the accurate identification. for anfo, the same product ions with k-0 of 2.07 cm(2) v-1 s(-1) were generated, but improved peak-to-peak resolution as well as sensitivity were achieved with co3-(h2o)(n). moreover, an improved peak-to-peak resolution was also obtained for bp with co3-(h2o)(n), while the better sensitivity was obtained with o-2(-)(h2o)(n). |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, analytical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | plasma chromatography ; corona discharge ; sensitive detection ; mass-spectrometer ; trace detector ; reagent ions ; ionization ; tnt ; 2,4,6-trinitrotoluene ; vapors |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000332494100057 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145805]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Shasha,Wang, Weiguo,Zhou, Qinghua,et al. Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection[J]. analytical chemistry,2014,86(5):2687-2693. |
| APA | Chen, Shasha.,Wang, Weiguo.,Zhou, Qinghua.,Chen, Chuang.,Peng, Liying.,...&Li, Haiyang.(2014).Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection.analytical chemistry,86(5),2687-2693. |
| MLA | Chen, Shasha,et al."Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection".analytical chemistry 86.5(2014):2687-2693. |
入库方式： OAI收割
来源：大连化学物理研究所
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