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纳升电喷雾-离子迁移谱及其与高效液相色谱的联用 被引量:7
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作者 陈创 王卫国 +7 位作者 梁茜茜 周庆华 彭丽英 温萌 鞠帮玉 赵琨 刘军 李海洋 《色谱》 CAS CSCD 北大核心 2013年第4期386-391,共6页
搭建了一套纳升级电喷雾-离子源离子迁移谱仪。首先,分别对尾吹气流速、溶剂流速等影响仪器去溶剂化效果的参数进行了研究和优化。在此基础上,用一系列胺类化合物对该仪器的去溶剂化效果、分辨能力以及灵敏度进行了表征。实验结果表明,... 搭建了一套纳升级电喷雾-离子源离子迁移谱仪。首先,分别对尾吹气流速、溶剂流速等影响仪器去溶剂化效果的参数进行了研究和优化。在此基础上,用一系列胺类化合物对该仪器的去溶剂化效果、分辨能力以及灵敏度进行了表征。实验结果表明,该仪器能够对电喷雾离子液滴实现完全去溶剂化;三辛胺的检出限可以达到10μg/L。最后,将该仪器用作高效液相色谱的检测器,在无需衍生化的条件下对胺类混合物样品进行检测。由三乙胺、二乙胺以及丁胺组成的混合样品被成功分离并测定。该系统对三乙胺、二乙胺以及丁胺的线性响应范围均达到近两个数量级。 展开更多
关键词 纳升电喷雾离子源 离子迁移谱 高效液相色谱 约化迁移率
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A Reflectron Time-of-Flight Mass Spectrometer with a Nano-Electrospray Ionization Source for Study of Metal Cluster Compounds
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作者 吴小虎 谢华 +3 位作者 刘志凌 苏海峰 林水潮 唐紫超 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2016年第4期401-406,I0001,共7页
An experiment facility has been set up for the study of metal cluster compounds in our laboratory, which consists of a nano-electrospray ionization source, an ion transmission and focus system, and a reflectron time-o... An experiment facility has been set up for the study of metal cluster compounds in our laboratory, which consists of a nano-electrospray ionization source, an ion transmission and focus system, and a reflectron time-of-fight mass spectrometer. Taking advantage of the nano-electrospray ionization source, polyvalent ions are usually produced in the "ionization" process and the obtained mass resolution of the equipment is over 8000. The molecular ion peaks of metal cluster compounds [Au20(PPhpy2)10Cl2](SbF6)4, where PPhpy2=bis(2- pyridyl)phenylphosphine, and [AuaAg2(C)L6](BF4)4, where L=2-(diphenylphosphino)-5- methylpyridine, are distinguished in the respective mass spectrum, accompanied by some fragment ion peaks. In addition, the mass-to-charge ratios of the parent ions are determi- nated. Preliminary results suggest that the device is a powerful tool for the study of metal cluster compounds. It turns out that the information obtained by the instrumentation serves as an essential supplement to single crystal X-ray diffraction for structure characterization of metal cluster compounds. 展开更多
关键词 Nano-electrospray ionization source Ion transmission and focus system Reflectron time-of-flight mass spectrometer Metal cluster compounds Single crystal X-ray diffraction
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