...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Review of Scientific Instruments >A pair of concentric capillaries as an interface for gas chromatography and supersonic jet/multiphoton ionization/mass spectrometry
【24h】

A pair of concentric capillaries as an interface for gas chromatography and supersonic jet/multiphoton ionization/mass spectrometry

机译：一对同心毛细管作为气相色谱和超声速射流/多光子电离/质谱法的界面

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A pair of concentric capillaries was developed to mix helium, which was used as the carrier gas for gas chromatography, with argon for efficient molecular cooling by supersonic jet expansion. A simple instrument was constructed for the evaluation of nozzle diameter using the Hagen–Poiseuille equation. The effects of nozzle diameter, type of expansion gas, flow rate, and the distance from the nozzle to the observation region were investigated. Mixing argon gas with the carrier gas helium resulted in efficient molecular cooling from 30 to 10 K and the complete disappearance of the background signal from the multiphoton ionization spectrum. Consequently, the spectral selectivity was significantly improved and the nozzle was successfully applied to isomer-selective analysis of dichlorotoluenes. Since the dead volume in the nozzle was negligible, it was suitable as an interface for gas chromatography and supersonic jet/multiphoton ionization/mass spectrometry. © 2010 American Institute of Physics Article Outline INTRODUCTION EXPERIMENTAL Apparatus Interface between GC and MS Reagents RESULTS AND DISCUSSION Determination of nozzle diameter Cooling effect of supersonic jet expansion A pair of concentric capillaries for GC/SSJ/MPI-MS CONCLUSIONS
机译：开发了一对同心毛细管来混合氦气和氦气，氦气用作气相色谱的载气，氩气用于通过超音速射流膨胀进行有效的分子冷却。使用Hagen-Poiseuille方程构造了一种用于评估喷嘴直径的简单仪器。研究了喷嘴直径，膨胀气体类型，流量以及从喷嘴到观察区域的距离的影响。氩气与载气氦气的混合导致有效的分子冷却从30 K冷却到10 K，并且背景信号从多光子电离光谱中完全消失。因此，光谱选择性得到了显着改善，该喷嘴成功地应用于二氯甲苯的异构体选择性分析。由于喷嘴中的死体积可以忽略不计，因此它适合用作气相色谱和超音速喷射/多光子电离/质谱的接口。 ©2010美国物理研究所文章大纲简介实验设备GC和MS试剂之间的界面结果与讨论喷嘴直径的确定超音速喷射膨胀的冷却效果一对用于GC / SSJ / MPI-MS的同心毛细管结论

著录项

  • 来源
    《Review of Scientific Instruments》 |2010年第8期|p.1-5|共5页
  • 作者

    H. Okudaira; T. Uchimura; T. Imasaka;

  • 作者单位

    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;

    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan|Division of Translational Research, Center for Future Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;

    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan|Division of Translational Research, Center for Future Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    chromatography; jets; mass spectroscopy; nozzles; pipe flow; Poiseuille flow; supersonic flow;

    机译：色谱;喷射;质谱;喷嘴;管流;泊肃叶流;超音速流;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号