Method for on-column injection gas chromatography
    1.
    发明授权
    Method for on-column injection gas chromatography 失效
    柱内注射气相色谱法

    公开(公告)号:US4962042A

    公开(公告)日:1990-10-09

    申请号:US448410

    申请日:1989-12-08

    摘要: In one embodiment the invention is a method for on-column valved injection gas chromatography by on-column injecting more than 5 microliters and less than one milliliter of sample consisting of a solvent and a component of interest into a retention gap/capiliary column system with an injection valve at a first carrier gas flow rate, followed by a substantially higher carrier gas flow rate to blow the solvent of the sample out of the system at a rapidly increased rate and then a return to a lower flow rate to chromatograph the component of interest. In another embodiment, less than 5 microliters of sample consisting of a solvent and a component of interest is on-column injected into a capillary column using an injection valve and a relatively high column inlet pressure of gas to move the sample from the injection valve into the colunm rapidly and with reduced carryover. Then, the pressure of carrier gas is reduced to a normal pressure for chromatography of the component of interest.

    摘要翻译: 在一个实施方案中,本发明是一种柱上带阀注入气相色谱法的方法,其通过柱上注入超过5微升和小于1毫升由溶剂和感兴趣组分组成的样品的保留间隙/毛细管柱系统中, 以第一载气流速的喷射阀,然后以显着更高的载气流速将样品的溶剂以快速增加的速率吹出系统,然后返回到较低的流速以色谱分离 利益。 在另一个实施方案中,使用注射阀和相对较高的柱入口压力将小于5微升由溶剂和感兴趣组分组成的样品柱内注入毛细管柱,以将样品从注射阀移动到 快速,随身携带。 然后,将载气的压力降低至感兴趣组分的色谱法的常压。

    Vented retention gap capillary gas chromatography method
    3.
    发明授权
    Vented retention gap capillary gas chromatography method 失效
    通气留置间隙毛细管气相色谱法

    公开(公告)号:US5001071A

    公开(公告)日:1991-03-19

    申请号:US254538

    申请日:1988-10-06

    IPC分类号: G01N30/16

    CPC分类号: G01N30/16 G01N2030/165

    摘要: A method for on-column injection of large sample volumes using the retention gap technique in capillary gas chromatography for sample components of interest that would be obscured by the large solvent peak otherwise inherent in the technique. This interference from the large solvent peak is removed by venting carrier flow from the retention gap to waste for a limited time, long enough to discard much of the solvent without serious loss of the sample component of interest.

    摘要翻译: 使用保留间隙技术在毛细管气相色谱法中对目标样品组分进行柱内注射大量样品体积的方法,其将被技术中固有的大溶剂峰所掩蔽。 来自大溶剂峰的这种干扰通过将载体流从保持​​间隙排出到废物一段有限的时间来消除,足够长的时间来丢弃大部分溶剂,而不会使感兴趣的样品组分严重损失。

    APPARATUS AND METHOD FOR EXOTHERMIC AND ENDOTHERMIC REACTIONS
    5.
    发明申请
    APPARATUS AND METHOD FOR EXOTHERMIC AND ENDOTHERMIC REACTIONS 审中-公开
    装置和方法用于外部和内部反应

    公开(公告)号:US20090215190A1

    公开(公告)日:2009-08-27

    申请号:US12389820

    申请日:2009-02-20

    IPC分类号: G01N25/00

    CPC分类号: G01N25/484 G01K17/00

    摘要: The present invention generally relates to an apparatus and method for running a plurality of essentially simultaneous exothermic reactions, endothermic reactions, or a combination thereof in sealed reactors and obtaining physico-chemical data, preferably temperature data, and, optionally, time data, for the reactions, wherein reaction mixtures in the sealed reactors are adiabatically thermally insulated from one another so that temperature in one sealed reactor does not materially affect temperature in any other, including an adjacent, sealed reactor.

    摘要翻译: 本发明一般涉及用于在密封反应器中运行多个基本上同时进行的放热反应或吸热反应或其组合的装置和方法,并获得物理化学数据,优选温度数据,以及可选地时间数据,用于 反应,其中密封反应器中的反应混合物彼此绝热地绝热,使得一个密封的反应器中的温度不会在任何其它物质(包括相邻的密封反应器)中实质性地影响温度。

    Scrub Testing Devices and Methods
    8.
    发明申请
    Scrub Testing Devices and Methods 有权
    磨砂测试设备和方法

    公开(公告)号:US20090078035A1

    公开(公告)日:2009-03-26

    申请号:US12239282

    申请日:2008-09-26

    IPC分类号: G01N19/00

    CPC分类号: G01N3/56 G01N3/567

    摘要: The invention provides, in one embodiment, a device for performing scrub testing on a plurality of samples simultaneously, including a plurality of scrubbing devices. A stage is provided which positions the plurality of samples in contact with the plurality of scrubbing devices. The scrubbing devices can individually be provided with different weights to produce different forces on the samples. A motion producing device produces one or both of linear and rotational motion between the brushes and the samples. The scrubbing devices are held in the stage so as move freely vertically.

    摘要翻译: 在一个实施例中,本发明提供了一种用于在多个样本上同时执行擦洗测试的装置,包括多个擦洗装置。 提供了使多个样品与多个洗涤装置接触的阶段。 洗涤装置可以单独提供不同的重量以在样品上产生不同的力。 运动产生装置在刷子和样品之间产生线性和旋转运动之一或两者。 洗涤装置保持在舞台中,以便垂直地自由移动。

    Scrub testing devices and methods
    10.
    发明授权
    Scrub testing devices and methods 有权
    磨砂试验装置和方法

    公开(公告)号:US07997118B2

    公开(公告)日:2011-08-16

    申请号:US12239282

    申请日:2008-09-26

    IPC分类号: G01N3/56

    CPC分类号: G01N3/56 G01N3/567

    摘要: The invention provides, in one embodiment, a device for performing scrub testing on a plurality of samples simultaneously, including a plurality of scrubbing devices. A stage is provided which positions the plurality of samples in contact with the plurality of scrubbing devices. The scrubbing devices can individually be provided with different weights to produce different forces on the samples. A motion producing device produces one or both of linear and rotational motion between the brushes and the samples. The scrubbing devices are held in the stage so as move freely vertically.

    摘要翻译: 在一个实施例中,本发明提供了一种用于在多个样本上同时执行擦洗测试的装置,包括多个擦洗装置。 提供了使多个样品与多个洗涤装置接触的阶段。 洗涤装置可以分别具有不同的重量以在样品上产生不同的力。 运动产生装置在刷子和样品之间产生线性和旋转运动之一或两者。 洗涤装置保持在舞台中,以便垂直地自由移动。