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18 条记录 (耗时 0.02 秒)

    Method and device for spectral reconstruction
    1.
    发明授权
    Method and device for spectral reconstruction 失效
    光谱重建方法和装置

    公开(公告)号：US4642778A

    公开(公告)日：1987-02-10

    申请号：US585575

    申请日：1984-03-02

    申请人： Gary M. Hieftje ,  David H. Honigs

    发明人： Gary M. Hieftje ,  David H. Honigs

    IPC分类号： G01J3/28 ,  G01N21/35 ,  G06F15/46

    CPC分类号： G01J3/28 ,  G01N21/3577 ,  G01J2003/284 ,  G01J2003/2866

    摘要： A method is presented for spectral reconstruction which comprises first obtaining component concentrations of a series of mixtures, which component concentrations constitute a set of reference values. The spectral value of each member of that series of mixtures is measured at a first wavelength, which spectral value possesses contribution from individual components in the mixture, whose individual contribution is unknown. The spectral values for the series of mixtures are then mathematically cross-correlated with the component concentrations in said series of mixtures, at the first wavelength, thereby obtaining the spectral contribution for said components at that first wavelength. The spectral value of each member of that series of mixtures is measured at the second wavelength, which spectral values are then cross-correlated with component concentrations in the series of mixtures thereby obtaining the spectral contribution for said components at the second wavelength. This operation is repeated for a series of wavelengths until the spectrum of the desired component in the mixture is reconstructed. Devices are presented which implement the methods for spectral reconstruction of the present invention.

    摘要翻译： 提出了一种用于光谱重建的方法，其包括首先获得一系列混合物的组分浓度，该组分浓度构成一组参考值。 该系列混合物的每个成员的光谱值在第一波长处测量，该光谱值具有来自混合物中各个成分的贡献，其个体贡献是未知的。 然后，该系列混合物的光谱值在第一波长处与所述混合物系列中的组分浓度数学上交叉相关，由此获得在该第一波长处的所述组分的光谱贡献。 在第二波长处测量该系列混合物的每个成员的光谱值，该光谱值然后与该系列混合物中的成分浓度交叉相关，从而获得第二波长处的所述成分的光谱贡献。 对于一系列波长重复该操作，直到重构混合物中所需组分的光谱。 给出了实现本发明的光谱重建方法的装置。

    Device for the accurate dispensing of small volumes of liquid samples
    2.
    发明授权
    Device for the accurate dispensing of small volumes of liquid samples 失效
    用于准确分配少量液体样品的装置

    公开(公告)号：US4492322A

    公开(公告)日：1985-01-08

    申请号：US373647

    申请日：1982-04-30

    申请人： Gary M. Hieftje ,  John Shabushnig

    发明人： Gary M. Hieftje ,  John Shabushnig

    IPC分类号： B01L3/02 ,  B67D5/00

    CPC分类号： B01L3/0268

    摘要： A device for accurately dispensing small volumes of liquids in the form of uniform droplets. The dispensing device communicates with a source of compressed air which, during start-up transience of the dispensing device, directs a jet of compressed air at the trajectory of dispensed droplets, thereby deflecting the droplets out of their normal trajectory and away from the collecting surface or container and allowing accurate dispensing.

    摘要翻译： 用于精确分配均匀液滴形式的小体积液体的装置。 分配装置与压缩空气源连通，在分配装置的启动瞬态期间，在分配的液滴的轨迹处引导压缩空气流，从而使液滴偏离其正常轨迹并远离收集表面 或容器，并允许精确的分配。

    RESOLUTION AND MASS RANGE PERFORMANCE IN DISTANCE-OF-FLIGHT MASS SPECTROMETRY WITH A MULTICHANNEL FOCAL-PLANE CAMERA DETECTOR
    5.
    发明申请
    RESOLUTION AND MASS RANGE PERFORMANCE IN DISTANCE-OF-FLIGHT MASS SPECTROMETRY WITH A MULTICHANNEL FOCAL-PLANE CAMERA DETECTOR 审中-公开
    使用多通道光学平面相机检测器的距离飞行质谱分辨率和质谱范围性能

    公开(公告)号：US20140138538A1

    公开(公告)日：2014-05-22

    申请号：US14110998

    申请日：2012-04-16

    申请人： Gary M. Hieftje ,  Christie George Enke ,  Alexander W. Graham ,  Steven J. Ray ,  Elise Dennis ,  Charles J. Barinaga ,  David W. Koppenaal

    发明人： Gary M. Hieftje ,  Christie George Enke ,  Alexander W. Graham ,  Steven J. Ray ,  Elise Dennis ,  Charles J. Barinaga ,  David W. Koppenaal

    IPC分类号： H01J49/34

    CPC分类号： H01J49/34 ,  H01J49/40

    摘要： A distance-of-flight mass spectrometer (DOFMS) includes an ion source, a field-free region, an extraction region in which ions are accelerated, and a spatially-selective detector for spatially selectively detecting ions extracted by the extraction region. A method for operating a distance-of-flight mass spectrometer DOFMS comprises controlling a detection time in such a way as to permit ions with progressively greater mass-to-charge (m/z) ratios to enter the extraction region of the DOFMS at positions which will permit the ions with progressively greater m/z ratios to enter the detector of the DOFMS, generating a component mass spectrum at each selected value of detection time, and then assembling a composite mass spectrum by shifting the distance-of-flight axis of each component mass spectrum by a distance corresponding to the change in detection time.

    摘要翻译： 飞行时间质谱仪（DOFMS）包括离子源，无场区域，其中离子被加速的提取区域和用于空间选择性地检测由提取区域提取的离子的空间选择性检测器。 用于操作飞行时间质谱仪DOFMS的方法包括以这样的方式控制检测时间，使得允许具有逐渐更大的质荷比（m / z）比的离子在位置处进入DOFMS的提取区域 这将允许具有逐渐更大的m / z比的离子进入DOFMS的检测器，在检测时间的每个选定值处产生组分质谱，然后通过将飞行时间轴的位移 每个组分质谱与检测时间的变化相对应。

    Methods for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry
    7.
    发明授权
    Methods for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry 有权
    电感耦合等离子体原子发射光谱法检测和校正不准确结果的方法

    公开(公告)号：US07768639B1

    公开(公告)日：2010-08-03

    申请号：US12212915

    申请日：2008-09-18

    申请人： George C. Y. Chan ,  Gary M. Hieftje

    发明人： George C. Y. Chan ,  Gary M. Hieftje

    IPC分类号： G01N21/73

    CPC分类号： G01N21/73 ,  G01N21/274

    摘要： A method for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry (ICP-AES). ICP-AES analysis is performed across a plurality of selected locations in the plasma on an unknown sample, collecting the light intensity at one or more selected wavelengths of one or more sought-for analytes, creating a first dataset. The first dataset is then calibrated with a calibration dataset creating a calibrated first dataset curve. If the calibrated first dataset curve has a variability along the location within the plasma for a selected wavelength, errors are present. Plasma-related errors are then corrected by diluting the unknown sample and performing the same ICP-AES analysis on the diluted unknown sample creating a calibrated second dataset curve (accounting for the dilution) for the one or more sought-for analytes. The cross-over point of the calibrated dataset curves yields the corrected value (free from plasma related errors) for each sought-for analyte.

    摘要翻译： 一种在电感耦合等离子体原子发射光谱法（ICP-AES）中检测和校正不准确结果的方法。 在未知样品上的等离子体中的多个选定位置上进行ICP-AES分析，收集一种或多种所寻找分析物的一个或多个所选波长的光强度，从而产生第一数据集。 然后用校准数据集校准第一个数据集，创建校准的第一个数据集曲线。 如果校准的第一数据集曲线沿着所选波长的等离子体内的位置具有可变性，则存在错误。 然后通过稀释未知样品并对稀释的未知样品进行相同的ICP-AES分析来校正等离子体相关误差，产生针对一种或多种所寻找分析物的校准的第二数据集曲线（占稀释度）。 校准数据集曲线的交叉点产生每个寻找分析物的校正值（无等离子体相关误差）。

    Simultaneous acquisition of chemical information
    10.
    发明授权
    Simultaneous acquisition of chemical information 有权
    同时获取化学信息

    公开(公告)号：US07294830B2

    公开(公告)日：2007-11-13

    申请号：US10500685

    申请日：2003-01-02

    申请人： Gary M. Hieftje ,  Steven J. Ray

    发明人： Gary M. Hieftje ,  Steven J. Ray

    IPC分类号： B01D59/44

    CPC分类号： H01J49/107

    摘要： A method and apparatus for operating a mass spectrometer include providing at least two different ion sources, and coupling ion streams simultaneously from the at least two different ion sources to the spectrometer. Another method of operating a spectrometer includes a first coupling an ion stream from a first one of the ion sources into the spectrometer, next coupling an ion stream from a second one of the ion sources into the spectrometer, next coupling an ion stream from the second one of the ion sources into the spectrometer, and next coupling an ion stream from the first one of the ion sources into the spectrometer.

    摘要翻译： 用于操作质谱仪的方法和装置包括提供至少两种不同的离子源，并且将离子流同时从至少两种不同的离子源耦合到光谱仪。 操作光谱仪的另一种方法包括将离子流中的第一离子源的离子流首先耦合到光谱仪中，然后将来自第二离子源的离子流耦合到光谱仪中，然后将离子流从第二离子流 离子源中的一个进入光谱仪，然后将来自第一个离子源的离子流耦合到光谱仪中。