Liquid chromatographic method and system
    6.
    发明授权
    Liquid chromatographic method and system 失效
    液相色谱法和体系

    公开(公告)号:US06904784B2

    公开(公告)日:2005-06-14

    申请号:US10082710

    申请日:2002-02-25

    摘要: To economically perform preparatory chromatography, a plurality of pumps each having a corresponding one of a plurality of pistons and a corresponding one of a plurality of cylinders are driven by one motor to draw and pump solvent simultaneously into corresponding columns. To form a gradient, the pumps are connected to two-way valves that are connected alternately to a first solvent and a second solvent, whereby the time said valve is in a first position controls the amount of solvent drawn from the first reservoir into said pumps and the amount of time in said second position controls the amount of said second solvent drawn from the second reservoir into said pumps and the solvent is mixed in the pumping systems. The detectors are photodiodes mounted to light guides in the flow cells that generate signals related to light absorbance and communicate with a controller, whereby the controller receives signals indicating solute between the light guides and causes collection of solute. An over-pressure system compensates for pressure over a predetermined level.

    摘要翻译: 为了经济地进行准备色谱,每个具有多个活塞中的相应一个活塞和多个气缸中的相应一个的多个泵由一个电动机驱动,以将溶剂同时泵送到相应的列中。 为了形成梯度,泵连接到交替地连接到第一溶剂和第二溶剂的二通阀,由此所述阀处于第一位置的时间控制从第一储存器抽吸到所述泵中的溶剂的量 并且所述第二位置中的时间量将从第二储存器抽出的所述第二溶剂的量控制在所述泵中,并且溶剂在泵送系统中混合。 检测器是安装在流通池中的光导的光电二极管,其产生与吸光度相关的信号并与控制器通信,由此控制器接收指示光导之间的溶质并引起溶质的收集的信号。 过压系统补偿超过预定水平的压力。