Automatic photometric analyzer
    4.
    发明授权
    Automatic photometric analyzer 失效
    自动测光分析仪

    公开(公告)号:US4003708A

    公开(公告)日:1977-01-18

    申请号:US575078

    申请日:1975-05-06

    IPC分类号: G01N35/00 G01N31/00

    摘要: An automatic photometric analyzer is disclosed using an automatic exchanger holding a sample solution. A recorder, a photometer, an injector for the sample solution, and supply systems for pure water and coloring solutions are used. Additionally, valves under control of an automatic controller properly control the flow and the solution to provide a simple and practical apparatus with rapid automatic operation for analysis. The injector delivers reactant solutions to a reactor from which reactant is circulated through the photometric means to measure the absorbency thereof and back to the reactor.

    摘要翻译: 公开了一种使用保持样品溶液的自动交换器的自动测光分析仪。 使用记录器,光度计,样品溶液的注射器以及纯水和着色溶液的供应系统。 另外,在自动控制器控制下的阀门可以适当地控制流量和解决方案,为分析提供快速自动操作的简单实用的设备。 注射器将反应物溶液递送到反应器,反应物从该反应物循环通过光度测量装置以测量其吸收性并返回反应器。

    Method and apparatus for automatically dissolving samples for anaylsis
    5.
    发明授权
    Method and apparatus for automatically dissolving samples for anaylsis 失效
    自动溶解样品进行分析的方法和装置

    公开(公告)号:US3963420A

    公开(公告)日:1976-06-15

    申请号:US393184

    申请日:1973-08-30

    IPC分类号: B01F1/00 G01N31/00

    摘要: A method for automatically dissolving solid analysis samples in powder form which comprises transferring the sample from an external source into a dissolving tank under reduced pressure, adding a predetermined amount of dissolving solution, and taking out the solution. A condenser is provided at the top of the dissolving tank to effect condensation of vapor rising therefrom and the reduced pressure for transferring the sample is applied by vacuum means through the condenser.

    摘要翻译: 用于将固体分析样品自动溶解成粉末形式的方法,其包括将样品从外部源在减压下转移到溶解槽中,加入预定量的溶解溶液并取出溶液。 在溶解槽的顶部设置有冷凝器,以使从其中升出的蒸汽冷凝,并且通过真空装置通过冷凝器施加用于转移样品的减压。

    Process for purifying L-ascorbic acid 2-phosphate
    8.
    发明授权
    Process for purifying L-ascorbic acid 2-phosphate 失效
    L-抗坏血酸2-磷酸的纯化方法

    公开(公告)号:US4724262A

    公开(公告)日:1988-02-09

    申请号:US892013

    申请日:1986-08-01

    CPC分类号: C07F9/65515 C07F9/025

    摘要: A process of purifying L-ascorbic acid 2-phosphate is disclosed, comprising passing a solution containing L-ascorbic acid 2-phosphate through a column of a basic anion exchanger resin whose ion-exchange groups consist essentially of a primary amine group, a secondary amine group, a tertiary amine group or a mixture thereof, and eluting the L-ascorbic acid 2-phosphate with an aqueous solution of a mineral acid or an inorganic salt. L-ascorbic acid 2-phosphate can be isolated at a high efficiency through easy steps.

    摘要翻译: 公开了一种纯化L-抗坏血酸2-磷酸的方法,包括使含有L-抗坏血酸2-磷酸的溶液通过碱性阴离子交换树脂的柱,其中离子交换树脂基本上由伯胺基组成,二级 胺基,叔胺基或其混合物,并用无机酸或无机盐的水溶液洗脱L-抗坏血酸2-磷酸酯。 L-抗坏血酸2-磷酸酯可以通过简单的步骤以高效率分离。