公开(公告)号：US20240310337A1

公开(公告)日：2024-09-19

申请号：US18263638

申请日：2022-01-11

申请人： LECO Corporation

发明人： Mark Firmer Merrick ,  David Jesse Borton

IPC分类号： G01N30/72 ,  G01N30/02 ,  G01N30/10 ,  G01N30/32 ,  G01N30/46 ,  G01N30/68 ,  G01N30/78

CPC分类号： G01N30/7213 ,  G01N30/10 ,  G01N30/32 ,  G01N30/465 ,  G01N30/68 ,  G01N30/78 ,  G01N2030/025

摘要： An analytical instrument assembly includes a gas chromatograph, a first detector, a second detector, and a pneumatic control module. The gas chromatograph includes a flow splitter configured to receive a sample. The first detector is coupled to the flow splitter. The second detector is coupled to the flow splitter. The pneumatic control module is coupled to the flow splitter and configured to deliver a carrier gas to the flow splitter. The flow splitter is configured to split the sample and deliver at least a first portion of the sample to the first detector and at least a second portion of the sample to the second detector at a first split ratio. The pneumatic control module is configured to deliver one of (i) a makeup flow including a third portion of the carrier gas to the flow splitter or (ii) an exhaust flow out of the flow splitter, wherein the pneumatic control module is configured to regulate the pressure within the flow splitter to thereby maintain the first split ratio at a substantially constant value.

公开(公告)号：US20240159719A1

公开(公告)日：2024-05-16

申请号：US18506428

申请日：2023-11-10

申请人： TSINGHUA UNIVERSITY

发明人： Peixue JIANG ,  Yinhai ZHU ,  Yusen WANG

IPC分类号： G01N30/78 ,  G01N30/32 ,  G01N30/66 ,  G01N30/68 ,  G01N30/72

CPC分类号： G01N30/78 ,  G01N30/32 ,  G01N30/66 ,  G01N30/68 ,  G01N30/7206 ,  G01N2030/025

摘要： A system and method for detecting a fluid mixture are provided. The system includes a pipeline assembly, a first valve, a gas chromatograph and a vacuum pump. The pipeline assembly includes a first pipeline and a second pipeline. The first valve is connected to the first pipeline and controls a flow of the fluid mixture obtained from a reaction in a reactor. The gas chromatograph is provided with a sample injection end and a sample output end, where the sample injection end is connected to an end of the first pipeline away from the first valve; and the sample output end is connected to the second pipeline. The vacuum pump is connected to an end of the second pipeline away from the gas chromatograph.

公开(公告)号：US11959896B2

公开(公告)日：2024-04-16

申请号：US17057741

申请日：2019-05-31

申请人： Micromass UK Limited

发明人： Carl Chen ,  Richard Jarrold ,  Pham Hoang Vu Ngo ,  William Ngo ,  Dennis Ong ,  Richard Tyldesley-Worster ,  Arvind Rangan ,  Chris Wheeldon

IPC分类号： G01N30/72 ,  G01N27/18 ,  G01N30/02 ,  G01N30/62 ,  G01N30/66 ,  G01N30/78 ,  H01J49/04

CPC分类号： G01N30/7206 ,  G01N27/18 ,  G01N30/62 ,  G01N30/66 ,  G01N30/78 ,  H01J49/0422 ,  G01N2030/025

摘要： A transfer line for a GCMS arrangement, the transfer line comprising: a transfer probe having a probe bore to receive a GC column; a sealing cap movably mounted at a first end of the transfer probe; and a resilient element arranged to bias the sealing cap away from the first end of the transfer probe.

公开(公告)号：US20180275104A1

公开(公告)日：2018-09-27

申请号：US15763520

申请日：2016-09-29

申请人： GE HEALTHCARE BIO-SCIENCES AB

发明人： Helena Skoglar ,  Bjorn Olovsson

IPC分类号： G01N30/38 ,  G01N30/74 ,  G01N30/20 ,  G01N30/78 ,  B01D15/18

CPC分类号： G01N30/38 ,  B01D15/1807 ,  B01D15/1885 ,  G01N30/20 ,  G01N30/42 ,  G01N30/74 ,  G01N30/78 ,  G01N35/1097 ,  G01N2030/202 ,  G01N2030/385 ,  G01N2030/626

摘要： The present invention relates to a chromatography system and a method therefor. The chromatography system comprising an inlet port (102) for receiving a sample, an outlet port (106) for delivering the sample, a detector (201), a column (104), and a valve (202) in fluid communication with the inlet port, the outlet port, the detector, and the column. The valve (202) comprises a first position (304) wherein the inlet port is in fluid communication with the outlet port via a first fluid path comprising the detector and the column, wherein the detector is arranged upstream the column. The valve comprises a second position (404) wherein the inlet port is in fluid communication with the outlet port via a second fluid path comprising the detector and the column, wherein the detector is arranged downstream the column.

公开(公告)号：US09891197B2

公开(公告)日：2018-02-13

申请号：US15259312

申请日：2016-09-08

申请人： VUV Analytics, Inc.

发明人： Dale A. Harrison ,  Anthony T. Hayes ,  Phillip Walsh

IPC分类号： G01N21/00 ,  G01N30/78 ,  G01N21/05 ,  G01N21/33 ,  G01J3/02 ,  G01N30/02 ,  G01N30/74 ,  G01N33/00 ,  G01N21/15 ,  G01N21/03

CPC分类号： G01N30/78 ,  G01J3/02 ,  G01N21/0332 ,  G01N21/05 ,  G01N21/15 ,  G01N21/33 ,  G01N30/02 ,  G01N30/74 ,  G01N33/0004 ,  G01N33/0027 ,  G01N2021/0325 ,  G01N2021/151 ,  G01N2021/158 ,  G01N2021/335 ,  G01N2030/025 ,  G01N2030/027 ,  G01N2201/024 ,  G01N2201/0633 ,  G01N2201/12 ,  G01N30/7266

摘要： An efficient absorption spectroscopy system is provided. The spectroscopy system may be configured to measure solid, liquid or gaseous samples. Vacuum ultra-violet wavelengths may be utilized. Some of the disclosed techniques can be used for detecting the presence of trace concentrations of gaseous species. A preferable gas flow cell is disclosed. Some of the disclosed techniques may be used with a gas chromatography system so as to detect and identify species eluted from the column. Some of the disclosed techniques may be used in conjunction with an electrospray interface and a liquid chromatography system so as to detect and identify gas phase ions of macromolecules produced from solution. Some of the disclosed techniques may be used to characterize chemical reactions. Some of the disclosed techniques may be used in conjunction with an ultra short-path length sample cell to measure liquids.

公开(公告)号：US09841408B2

公开(公告)日：2017-12-12

申请号：US14445831

申请日：2014-07-29

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT ,  California Institute of Technology

发明人： Pierre Puget ,  Edward B. Myers ,  Michael L. Roukes

IPC分类号： G01N30/78 ,  G01N30/60 ,  G01N30/46 ,  G01N30/86

CPC分类号： G01N30/78 ,  G01N30/463 ,  G01N30/60 ,  G01N30/6039 ,  G01N30/6052 ,  G01N30/6095 ,  G01N30/8693

摘要： A system for analyzing a gas mixture, including at least one chromatography column, a mechanism injecting the mixture into the column, and a mechanism detecting compound(s) forming the gas mixture, the detection mechanism including at least one detector of nanosensor type of an outlet of the column and a detector of nanosensor type in the column, capable of detecting passage of the compounds. It is then possible to determine the velocity of each of the compounds within the system.

公开(公告)号：US09658194B2

公开(公告)日：2017-05-23

申请号：US14378515

申请日：2013-02-07

申请人： Wyatt Technology Corporation

发明人： Steven P. Trainoff

IPC分类号： G01N30/02 ,  G01N21/41 ,  G01N21/47 ,  G01N21/49 ,  G01N30/16 ,  H01J49/04 ,  G01N30/78 ,  G01N30/84

CPC分类号： G01N30/02 ,  G01N21/41 ,  G01N21/4133 ,  G01N21/47 ,  G01N21/49 ,  G01N30/16 ,  G01N30/78 ,  G01N30/84 ,  G01N2030/8441 ,  H01J49/0431

摘要： Methods and apparatus for controlling interdetector band broadening during the analysis of a sample injected into a chromatography system. A column flow is diluted with a dilution flow after the sample exits the chromatography system, and the diluted sample is analyzed by one or a combination of analysis instruments such as a light scattering detector, refractive index detector, an ultraviolet absorption detector.

公开(公告)号：US20170115260A1

公开(公告)日：2017-04-27

申请号：US15042091

申请日：2016-02-11

申请人： JIADE YU

发明人： JIADE YU

IPC分类号： G01N30/78 ,  G01N21/64 ,  G01N21/33 ,  G01N30/74

CPC分类号： G01N30/78 ,  G01N21/33 ,  G01N21/645 ,  G01N30/74 ,  G01N2021/6417 ,  G01N2030/027 ,  G01N2201/068 ,  G01N2201/124

摘要： The present invention relates to an innovative analyzing and detecting instrument with excellent sensitivity and stability, especially to a present art that realizes the initiation of the dual-purpose instrument in a small inner-casing which combines both ultraviolet-visible and double monochromatic fluorescence dual detector widely used in the high performance liquid chromatography by taking the first to use deuterium lamp as the individual light source of the dual detectors, the individual sample detection cell and the individual electrical circuit, providing two detectors for detecting and analyzing, and emphasizing the advanced automatic gain art adopted in the present invention to make sure the main technical targets of the whole wavelength range are integral, easy to be checked up, and can solve the existing worldwide technical problem of sensitivity-stability exclusion of the two detectors only with the combination of the double techniques in both automatically eliminating noise and reducing drift, so that the excellent technical performance can be achieved.

公开(公告)号：US20170010243A1

公开(公告)日：2017-01-12

申请号：US15117737

申请日：2015-02-11

申请人： BÜCHI LABORTECHNIK AG

发明人： Romulus GAITA ,  Washington MENDOZA ,  Raaidah SAARI-NORDHAUS ,  James ANDERSON ,  Melissa GOLDE

IPC分类号： G01N30/46 ,  B01D15/16 ,  G01N30/64 ,  G01N30/78 ,  G01N30/74 ,  B01D15/18 ,  G01N30/80

CPC分类号： G01N30/468 ,  B01D15/165 ,  B01D15/1864 ,  G01N30/64 ,  G01N30/74 ,  G01N30/78 ,  G01N30/80 ,  G01N2030/645

摘要： A chromatographic apparatus includes two chromatographic columns configured to perform chromatography. The apparatus further includes a primary valve disposed upstream of the first chromatographic column and the second chromatographic column. The primary valve selectively switches between a first position in which the pump is in fluid communication with a first path that includes the first chromatographic column and a second position in which the pump is in fluid communication with a second path that includes the second chromatographic column. The apparatus also includes a first and a second sample injection port associated with said first and second columns, respectively, and at least one detector. The apparatus is configured such that flow from the column in the selected path goes to said at least one detector without passing through the other column.

摘要翻译： 色谱装置包括配置成进行色谱的两个色谱柱。 该装置还包括设置在第一色谱柱和第二色谱柱上游的主要阀。 主阀选择性地在其中泵与包括第一色谱柱的第一路径流体连通的第一位置和泵与包括第二色谱柱的第二路径流体连通的第二位置之间切换。 该装置还包括分别与所述第一和第二列相关联的第一和第二样本注入端口以及至少一个检测器。 该装置被配置为使得来自所选路径中的列的流量到达所述至少一个检测器而不通过另一列。

公开(公告)号：US20160377581A1

公开(公告)日：2016-12-29

申请号：US15259361

申请日：2016-09-08

申请人： VUV Analytics, Inc.

发明人： Dale A. Harrison ,  Anthony T. Hayes ,  Phillip Walsh, JR.

IPC分类号： G01N30/74 ,  G01N21/33

CPC分类号： G01N30/78 ,  G01J3/02 ,  G01N21/0332 ,  G01N21/05 ,  G01N21/15 ,  G01N21/33 ,  G01N30/02 ,  G01N30/74 ,  G01N33/0004 ,  G01N33/0027 ,  G01N2021/0325 ,  G01N2021/151 ,  G01N2021/158 ,  G01N2021/335 ,  G01N2030/025 ,  G01N2030/027 ,  G01N2201/024 ,  G01N2201/0633 ,  G01N2201/12 ,  G01N30/7266

摘要： An efficient absorption spectroscopy system is provided. The spectroscopy system may be configured to measure solid, liquid or gaseous samples. Vacuum ultra-violet wavelengths may be utilized. Some of the disclosed techniques can be used for detecting the presence of trace concentrations of gaseous species. A preferable gas flow cell is disclosed. Some of the disclosed techniques may be used with a gas chromatography system so as to detect and identify species eluted from the column. Some of the disclosed techniques may be used in conjunction with an electrospray interface and a liquid chromatography system so as to detect and identify gas phase ions of macromolecules produced from solution. Some of the disclosed techniques may be used to characterize chemical reactions. Some of the disclosed techniques may be used in conjunction with an ultra short-path length sample cell to measure liquids.