Dynamic thermal focusing of chromatographic separations
    2.
    发明授权
    Dynamic thermal focusing of chromatographic separations 失效
    色谱分离的动态热聚焦

    公开(公告)号:US08613216B2

    公开(公告)日:2013-12-24

    申请号:US13128611

    申请日:2009-11-12

    申请人: Ole Vorm

    发明人: Ole Vorm

    IPC分类号: G01N3/08

    摘要: There is provided a method for thermally focusing the elution times of compounds of a liquid chromatography system comprising a pre-column and a separation column as well as to provide a liquid chromatography system, wherein the chromatographic separation of a mixture of substances is optimized.

    摘要翻译: 提供了一种用于热聚焦包含预柱和分离柱的液相色谱系统的化合物的洗脱时间以及提供液相色谱系统的方法,其中物质混合物的色谱分离被优化。

    Peltier based freeze-thaw valves and method of use
    3.
    发明授权
    Peltier based freeze-thaw valves and method of use 有权
    基于珀尔帖的冻融阀及其使用方法

    公开(公告)号:US07128081B2

    公开(公告)日:2006-10-31

    申请号:US11148615

    申请日:2005-06-09

    IPC分类号: F17D1/18 F15C1/04

    摘要: A freeze-thaw valve is provided using a Peltier heat pump where the thermal short-circuit path between a cooled thermal mass and a heated thermal mass is reduced or absent and the valve state transition time is minimized. The freeze-thaw valve comprises a Peltier heat pump mounted to a heat exchange surface that comprises a cross-drilled copper water jacket or manifold. The Peltier heat pump is operated to maintain a cooled thermal mass at a substantially constant low temperature. A resistance heating element is used to produce a heated thermal mass. The freeze-thaw segment of a fluid conduit is commutated to contact either the heated or the cooled thermal mass to thaw and therefore open the valve or cool and thus close the valve. The operation of the Peltier heat pump at a constant temperature avoids problems inherent in the use of a Peltier heat pump to both heat and cool a freeze thaw segment.

    摘要翻译: 使用珀尔帖热泵提供冷冻解冻阀,其中冷却的热质量和加热的热质量之间的热短路径减少或不存在,并且阀状态转变时间最小化。 冻融阀包括安装到热交换表面的珀尔帖热泵,该热交换表面包括交叉钻孔的铜水套或歧管。 Peltier热泵运行,以保持冷却的热质量在基本上恒定的低温。 电阻加热元件用于产生加热的热质。 流体导管的冻融段被换向以接触加热或冷却的热物质以解冻,因此打开阀或冷却并因此关闭阀。 帕尔帖热泵在恒定温度下的运行避免了使用帕尔帖热泵对冷冻解冻段进行加热和冷却的固有问题。

    Mobile phase treatment for chromatography
    4.
    发明申请
    Mobile phase treatment for chromatography 审中-公开
    色谱法的流动相处理

    公开(公告)号:US20060054558A1

    公开(公告)日:2006-03-16

    申请号:US10505289

    申请日:2003-02-20

    IPC分类号: B01D15/08

    摘要: A convenient and efficient method for heating or cooling the mobile phase fluid of a chromatographic system prior to its entry into the chromatographic column is described. The “preheating” or “precooling” process is carried out using an apparatus containing a short length of tubing where the mobile phase is heated or cooled. The heating or cooling is performed using a heating or cooling element that is in intimate thermal contact with the exterior of the tubing. The temperature change of the mobile phase is measured downstream by a non-invasive, low-mass sensing element on the exterior of the tubing. With a low mass heating or cooling element, the device can be very responsive and allows for rapid equilibration and convenient temperature programming of the mobile phase. This configuration also requires only a short mobile phase contact time, is non-invasive, adds no dead volume, and allows for use of columns over a wide range of internal diameter, flow rates and temperatures.

    摘要翻译: 描述了在进入色谱柱之前加热或冷却色谱系统的流动相流体的方便和有效的方法。 使用包含流动相加热或冷却的短管道的装置进行“预热”或“预冷”过程。 使用与管道外部紧密热接触的加热或冷却元件进行加热或冷却。 流动相的温度变化通过管道外部的非侵入性,低质量感测元件在下游测量。 使用低质量加热或冷却元件,该装置可以非常响应,并允许流动相的快速平衡和方便的温度编程。 这种配置也只需要很短的流动相接触时间,是非侵入性的,不会增加死体积,并允许在各种内径,流速和温度范围内使用色谱柱。

    On-chip temperature controlled liquid chromatography methods and devices
    5.
    发明申请
    On-chip temperature controlled liquid chromatography methods and devices 失效
    片上温度控制液相色谱方法和装置

    公开(公告)号:US20050274174A1

    公开(公告)日:2005-12-15

    申请号:US11059625

    申请日:2005-02-17

    摘要: An apparatus for liquid chromatography comprises a liquid chromatography separation column on a substrate, wherein the separation column is coupled to a heater on the substrate. A chip-based temperature controlled liquid chromatography device comprises a substrate, a thermal isolation zone, and a separation column thermally isolated from the substrate by the thermal isolation zone. An apparatus for chip-based liquid chromatography comprising a cooling device is provided. A temperature gradient liquid chromatography system comprises a chip-based temperature controlled liquid chromatography device, a fluidic coupling, and an electrical interface. Methods of making and methods of using of chip-based temperature gradient liquid chromatography devices are also provided.

    摘要翻译: 用于液相色谱的装置包括在基底上的液相色谱分离柱,其中分离柱与基底上的加热器相连。 基于芯片的温度控制液相色谱装置包括基底,热隔离区和通过热隔离区与基底热隔离的分离柱。 提供了一种包括冷却装置的基于芯片的液相色谱仪。 温度梯度液相色谱系统包括基于芯片的温度控制液相色谱装置,流体耦合和电接口。 还提供了制备方法和使用基于芯片的温度梯度液相色谱装置的方法。

    Peltier based freeze-thaw valves and method of use
    6.
    发明申请
    Peltier based freeze-thaw valves and method of use 有权
    基于珀尔帖的冻融阀及其使用方法

    公开(公告)号:US20050236056A1

    公开(公告)日:2005-10-27

    申请号:US11148615

    申请日:2005-06-09

    摘要: A freeze-thaw valve is provided using a Peltier heat pump where the thermal short-circuit path between a cooled thermal mass and a heated thermal mass is reduced or absent and the valve state transition time is minimized. The freeze-thaw valve comprises a Peltier heat pump mounted to a heat exchange surface that comprises a cross-drilled copper water jacket or manifold. The Peltier heat pump is operated to maintain a cooled thermal mass at a substantially constant low temperature. A resistance heating element is used to produce a heated thermal mass. The freeze-thaw segment of a fluid conduit is commutated to contact either the heated or the cooled thermal mass to thaw and therefore open the valve or cool and thus close the valve. The operation of the Peltier heat pump at a constant temperature avoids problems inherent in the use of a Peltier heat pump to both heat and cool a freeze thaw segment.

    摘要翻译: 使用珀尔帖热泵提供冷冻解冻阀,其中冷却的热质量和加热的热质量之间的热短路径减少或不存在,并且阀状态转变时间最小化。 冻融阀包括安装到热交换表面的珀尔帖热泵,该热交换表面包括交叉钻孔的铜水套或歧管。 Peltier热泵运行,以保持冷却的热质量在基本上恒定的低温。 电阻加热元件用于产生加热的热质。 流体导管的冻融段被换向以接触加热或冷却的热物质以解冻,因此打开阀或冷却并因此关闭阀。 帕尔帖热泵在恒定温度下的运行避免了使用帕尔帖热泵对冷冻解冻段进行加热和冷却的固有问题。

    Sub-to super-ambient temperature programmable microfabricated gas chromatography column
    7.
    发明授权
    Sub-to super-ambient temperature programmable microfabricated gas chromatography column 有权
    低于超环境温度可编程微生物气相色谱柱

    公开(公告)号:US06706091B1

    公开(公告)日:2004-03-16

    申请号:US10326033

    申请日:2002-12-17

    IPC分类号: B01D1508

    摘要: A sub- to super-ambient temperature programmable microfabricated gas chromatography column enables more efficient chemical separation of chemical analytes in a gas mixture by combining a thermoelectric cooler and temperature sensing on the microfabricated column. Sub-ambient temperature programming enables the efficient separation of volatile organic compounds and super-ambient temperature programming enables the elution of less volatile analytes within a reasonable time. The small heat capacity and thermal isolation of the microfabricated column improves the thermal time response and power consumption, both important factors for portable microanalytical systems.

    摘要翻译: 低于超环境温度可编程微生物气相色谱柱可以通过将热电冷却器和微量制备柱上的温度检测相结合,从而更有效地化学分离气体混合物中的化学分析物。 亚环境温度编程可以有效分离挥发性有机化合物,超环境温度程序可以在合理的时间内洗脱不易挥发的分析物。 微加热柱的小热容量和热隔离提高了热时间响应和功耗,这两个重要因素都是便携式微量分析系统。