公开(公告)号：US5281256A

公开(公告)日：1994-01-25

申请号：US975289

申请日：1992-11-12

Applicant: Richard D. Sacks ,  Michael L. Akard

Inventor： Richard D. Sacks ,  Michael L. Akard

IPC: G01N30/26 ,  G01N1/00 ,  G01N1/22 ,  G01N1/26 ,  G01N30/02 ,  G01N30/12 ,  G01N30/20 ,  G01N30/24 ,  G01N30/30 ,  G01N30/32 ,  G01N30/38 ,  G01N30/40 ,  G01N30/46 ,  G01N30/62 ,  G01N30/68 ,  G01N30/78 ,  G01N30/86 ,  B01D15/08

CPC classification number: G01N30/468 ,  G01N1/26 ,  G01N30/12 ,  G01N30/20 ,  G01N30/38 ,  G01N30/40 ,  G01N1/2214 ,  G01N2030/025 ,  G01N2030/121 ,  G01N2030/122 ,  G01N2030/201 ,  G01N2030/202 ,  G01N2030/204 ,  G01N2030/3046 ,  G01N2030/383 ,  G01N2030/385 ,  G01N2030/402 ,  G01N2030/405 ,  G01N2030/407 ,  G01N2030/623 ,  G01N2030/628 ,  G01N30/24 ,  G01N30/32 ,  G01N30/461 ,  G01N30/466 ,  G01N30/68 ,  G01N30/78 ,  G01N30/8651 ,  G01N35/1097

Abstract: A gas chromatography system featuring column bifurcation and pressure tuning. The system of this invention incorporates a bifurcated system in which samples eluting from a first separation column are directed selectively through one of two or more additional separation columns. Flow directing is achieved through the use of valves which switch carrier gas which are outside of the path of the analyte mixture. Effective tuning of the system is provided by adjusting the intermediate pressure which controls the effective lengths of the initial separation column and the additional final separation columns.

Abstract translation: 具有柱分岔和压力调节的气相色谱系统。 本发明的系统包含分叉系统，其中从第一分离柱洗脱的样品选择性地通过两个或更多个附加分离柱之一。 通过使用在分析物混合物的路径之外切换载气的阀来实现流动引导。 通过调节控制初始分离柱和附加最终分离柱的有效长度的中间压力来提供系统的有效调节。

公开(公告)号：US3604268A

公开(公告)日：1971-09-14

申请号：US3604268D

申请日：1969-04-08

Applicant: CESKOSLOVENSKA AKADEMIE VED

Inventor： HRDINA JIRI

IPC: G01N30/16 ,  G01N30/20 ,  G01N30/24 ,  G01N1/00

CPC classification number: G01N30/20 ,  G01N30/24 ,  G01N30/6091 ,  G01N2030/201 ,  G01N2030/202

Abstract: A method and device for introducing into a chromatographic column a sample held in a cartridge. The cartridge is placed on a carrier which is then placed between a valve casing and a superimposed spring-loaded pressure head. The valve in the casing is adjusted to pass eluate from a pump directly into the chromatographic column thereby bypassing the cartridge. The cartridge is then tightly clamped between the pressure head and the valve which is adjusted to pass eluate from the pump through the pressure head and through the cartridge into a chromatographic column.

公开(公告)号：US3585863A

公开(公告)日：1971-06-22

申请号：US3585863D

申请日：1969-04-08

Applicant: CESKOSLOVENSKA AKADEMIE VED

Inventor： HRDINA JIRI

IPC: G01N1/34 ,  G01N30/14 ,  G01N30/20 ,  G01N30/24 ,  G01N30/88 ,  G01N1/00

CPC classification number: G01N1/405 ,  G01N30/14 ,  G01N30/20 ,  G01N30/24 ,  G01N2030/201 ,  G01N2030/8881

Abstract: A method and apparatus for carrying out liquid chromatography. A plurality of cartridges are transported sequentially into fluid communication with the column. Each cartridge contains a solid porous sorption material retained between perforated plates. Immediately before moving into the location where the cartridge is in communication with the column, the cartridge is clamped in a fluid circuit and deaeration of the sorption material is carried out by pumping a liquid through the cartridge. After deaeration of the porous material, eluent liquid is pumped through the cartridge and into the column and the danger of the inclusion of air bubbles in the stream is eliminated.

公开(公告)号：US3121321A

公开(公告)日：1964-02-18

申请号：US73629958

申请日：1958-05-19

Applicant: PHILLIPS PETROLEUM CO

Inventor： KARASEK FRANCIS W

IPC: G01N30/20 ,  G01N30/32 ,  G01N30/40 ,  G01N30/46

CPC classification number: G01N30/40 ,  G01N30/32 ,  G01N30/466 ,  G01N2030/201 ,  G01N2030/202 ,  G01N2030/402

公开(公告)号：US20240241091A1

公开(公告)日：2024-07-18

申请号：US18561850

申请日：2022-05-18

Applicant: PetroChina Company Limited

Inventor： Lin Shen ,  Xiaoqin Wang ,  Li Zhou ,  Xiaohong Li ,  Ling Huang ,  Zhenghua Chen

IPC: G01N30/74 ,  G01N1/22 ,  G01N30/02 ,  G01N30/20

CPC classification number: G01N30/74 ,  G01N1/22 ,  G01N30/20 ,  G01N2001/2285 ,  G01N2030/025 ,  G01N2030/201

Abstract: The present invention provides a system for on-line flame photometric detection of the content of sulfur-containing compounds in natural gas. The system comprises a sampling device, a depressurization system, a chromatographic column system and a flame photometric detector; wherein the chromatographic column system is provided with a carrier gas input line, and a chromatographic column, comprising a boiling point column and a sulfur column, is provided in the chromatographic column system; the output port of the sampling device is in communication with the input port of the depressurization system through a first delivery pipeline; the output port of the depressurization system is in communication with the input port of the boiling point column through a switchable connecting pipeline; the input port of the boiling point column and the input port of the sulfur column are each connected to the carrier gas input line through a switchable connecting pipeline; the output port of the boiling point column is in communication with the input port of the sulfur column through a switchable connecting pipeline; the output port of the sulfur column is in communication with the input port of the boiling point column through a switchable connecting pipeline; and the output port of the boiling point column and the output input port of the sulfur column are each connected to the input port of the flame photometric detector through a switchable connecting pipeline.

公开(公告)号：US12000808B2

公开(公告)日：2024-06-04

申请号：US17348531

申请日：2021-06-15

Applicant: Agilent Technologies, Inc.

Inventor： Clemens Plachetka ,  Konstantin Shoykhet ,  Tony Ziegler ,  Joachim-Richard Wagner ,  Manfred Berndt

IPC: B01D15/14 ,  G01N30/02 ,  G01N30/20 ,  G01N30/32 ,  G01N30/36

CPC classification number: G01N30/36 ,  B01D15/14 ,  G01N30/20 ,  G01N30/32 ,  G01N2030/027 ,  G01N2030/201

Abstract: A fluid supply device for providing a mobile phase for a sample separating device includes, a supply conduit for providing a fluid which forms at least a part of the mobile phase, a fluid valve which is fluidically coupled with the supply conduit and, depending on its switching state, enables or prevents a passing of the fluid from the supply conduit, an elastic buffer unit which is fluidically coupled upstream of the fluid valve with the supply conduit and which is configured for buffering the fluid, and a fluid conveying unit for conveying the fluid which passes the fluid valve.

公开(公告)号：US20240167985A1

公开(公告)日：2024-05-23

申请号：US18493974

申请日：2023-10-25

Applicant: DIONEX SOFTRON GMBH

Inventor： Hermann HOCHGRAEBER

IPC: G01N30/20 ,  G01N30/32 ,  G01N35/10

CPC classification number: G01N30/20 ,  G01N30/32 ,  G01N35/1097 ,  G01N2030/201 ,  G01N30/24

Abstract: A sample injection method for liquid chromatography is performed with an injection valve having a waste port, two sample loop ports, and two high-pressure ports. One high-pressure port can be connected to a pump and the other high-pressure port can be connected to a chromatography column. A sample loop is connected to one of the sample loop ports on one end and to a pump volume of a sample conveying device on the other end. A section of the sample loop can be separated to facilitate receiving a sample fluid in the sample loop. A control unit controls the injection valve and the sample conveying device. The sample injector allows a sample to be loaded into the sample loop and then pressurized to an operating pressure prior to injecting the sample into the chromatography column. The sample loop may also be isolated from the operating pressure for facilitating depressurization of the loop.

公开(公告)号：US20240044848A1

公开(公告)日：2024-02-08

申请号：US18266705

申请日：2021-12-09

Applicant: MECANIQUE ANALYTIQUE INC.

Inventor： YVES GAMACHE ,  ANDRE LAMONTAGNE ,  FREDERIC BEDARD ,  ANDRE CLICHE

IPC: G01N30/20

CPC classification number: G01N30/20 ,  G01N2030/202 ,  G01N2030/201

Abstract: A chromatography valve for use in fluid analysis and chromatography applications is provided. The valve includes a first body having passages extending therethrough and opening on a flat face of the first body at respective passage ports. The valve also includes a second body engaged with the first body in a sealed relationship, whereby one of the first and second bodies is movable relative to the other one between two or more positions for controlling fluid circulation through the passages. The second body includes at least one cartridge receiving cavity for receiving at least one cartridge removably provided therein. The cartridge has channel(s) for channeling fluid of pairs of the passage ports, depending on the position of the first body relative to the second body, thereby channeling fluid through selected ones of the passages via the at least one channel A method of operating the valve is also provided.

公开(公告)号：US11867669B2

公开(公告)日：2024-01-09

申请号：US17715849

申请日：2022-04-07

Applicant: DIONEX SOFTRON GMBH

Inventor： Thomas Wachinger

IPC: G01N30/20 ,  G01N30/24

CPC classification number: G01N30/20 ,  G01N30/24 ,  G01N2030/201 ,  G01N2030/202

Abstract: A sampler for liquid chromatography is described. The sampler includes an injection valve and a sample loop. The injection valve includes one waste port, two sample loop ports, and two high-pressure ports. The sample loop port includes a first loop part and a second loop part. The injection valve can be configured to have LOAD position and INJECT position. The injection valve can also be configured to have one or more additional positions such as a FULL PURGE position, a PUMP PURGE position, and a NEGATIVE PRESSURE position.

公开(公告)号：US11656208B2

公开(公告)日：2023-05-23

申请号：US17206994

申请日：2021-03-19

Applicant: Waters Technologies Corporation

Inventor： Sylvain Cormier ,  Richard W. Andrews ,  Peyton C. Beals

IPC: G01N30/32 ,  G01N30/34 ,  G01N30/20 ,  G01N30/24 ,  G01N30/22 ,  G01N30/86 ,  G01N30/88 ,  G01N30/02

CPC classification number: G01N30/32 ,  G01N30/20 ,  G01N30/22 ,  G01N30/24 ,  G01N30/34 ,  G01N30/8665 ,  G01N30/88 ,  G01N2030/027 ,  G01N2030/201 ,  G01N2030/202 ,  G01N2030/328 ,  G01N2030/347 ,  G01N2030/8804 ,  G01N2030/889 ,  G01N2030/8881

Abstract: A chromatography system includes a gradient delay volume defined as an overall fluid volume between where gradient is proportioned until an inlet of a chromatography column, a pump pumping a flow of gradient; and at least one valve located downstream from the pump, the at least one valve having a plurality of ports including an inlet port that receives the flow of gradient from the pump and an outlet port through which the flow of gradient exits the at least one valve, the at least one valve having at least two positions. A first position of the at least two positions of the at least one valve increases the gradient delay volume of the chromatography system relative to when the at least one valve is in a second position.