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1. 发明申请

WO1997038325A1 FLOW TUBE FOR NMR PROBE 审中-公开
标题翻译：核磁共振探头的流管
公开(公告)号：WO1997038325A1
公开(公告)日：1997-10-16
申请号：PCT/US1997005456
申请日：1997-04-02
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , HANER, Ronald
IPC分类号： G01R33/30
CPC分类号： G01R33/307
摘要： A three-piece NMR detection cell comprises an inlet tube (210) having a conically tapered outlet nozzle, leading to an analysis tube (220), in turn leading to an outlet tube (215) having a conically tapered inlet nozzle. The inlet and outlet tubes are inserted into the analysis tube at a distance from their inserted ends and sealed in a manner appropriate to their composition. When the detection cell is used in a coupled HPLC-NMR apparatus, increased NMR sensitivity and improved lineshape are obtained at low injection volumes while maintaining a low level of chromatographic band broadening and a high level of magnetic field homogeneity.
摘要翻译：三体式核磁共振检测单元包括具有锥形锥形出口喷嘴的入口管（210），导入分析管（220），然后通向具有锥形入口喷嘴的出口管（215）。入口管和出口管在与其插入端相距一定距离处插入分析管中，并以适合其组成的方式密封。当在耦合的HPLC-NMR装置中使用检测单元时，在低注射体积下获得提高的NMR灵敏度和改善的线形，同时保持低水平的色谱带宽度和高水平的磁场均匀性。

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