公开(公告)号：US4500432A

公开(公告)日：1985-02-19

申请号：US538832

申请日：1983-10-04

申请人： John S. Poole ,  Dennis R. Gere ,  Raymond J. Bell ,  Mark A. Nickerson

发明人： John S. Poole ,  Dennis R. Gere ,  Raymond J. Bell ,  Mark A. Nickerson

IPC分类号： B01D15/08 ,  G01N30/02 ,  G01N30/06 ,  G01N30/08 ,  G01N30/14 ,  G01N30/24 ,  G01N30/40

CPC分类号： B01D15/40 ,  B01D15/166 ,  G01N30/06 ,  G01N30/24 ,  G01N2030/027 ,  G01N2030/062 ,  G01N2030/407 ,  G01N30/02 ,  G01N30/08 ,  G01N30/14

摘要： Concentration of the solutes contained in a liquid solvent is effected by passing the solvent through a first trapping means that adsorbs them, flushing the first trapping means with supercritical fluid and reducing its solubility parameter in a second trapping means so that the latter can adsorb desired solutes.

摘要翻译： 通过使溶剂通过吸附它们的第一捕集装置，用超临界流体冲洗第一捕集装置并在第二捕集装置中降低其溶解度参数，使得后者可以吸附所需的溶质来实现液体溶剂中所含的溶质的浓度 。

公开(公告)号：US4394263A

公开(公告)日：1983-07-19

申请号：US327548

申请日：1981-12-04

申请人： Werner Dosch ,  Heinz Wagner

发明人： Werner Dosch ,  Heinz Wagner

IPC分类号： G01N30/02 ,  G01N30/38 ,  G01N30/40 ,  G01N30/46 ,  G01N30/60 ,  B01D15/08

CPC分类号： G01N30/461 ,  G01N30/40 ,  G01N2030/025 ,  G01N2030/027 ,  G01N2030/383 ,  G01N30/463 ,  G01N30/466 ,  G01N30/6034

摘要： The invention relates to a connecting device for fluid circuits in column chromatography. To ensure an inert connection without dead volumes, the device comprises a glass or fused silica thick-wall body with an inner capillary channel connected to the outside through radial holes. In such holes, metal or fused silica capillaries are inserted and each fixed by means of a coupling carrying a capillary set screw and a coupling fixing screw, with said screws acting on opposite positions of said body wall.

摘要翻译： 本发明涉及一种用于柱层析中流体回路的连接装置。 为了确保没有死体积的惰性连接，该装置包括玻璃或熔融石英厚壁体，内部毛细通道通过径向孔连接到外部。 在这样的孔中，插入金属或熔融二氧化硅毛细管，并且每个都通过携带毛细管固定螺钉和联接固定螺钉的联接器固定，所述螺钉作用在所述体壁的相对位置上。

公开(公告)号：US4271697A

公开(公告)日：1981-06-09

申请号：US86200

申请日：1979-10-17

申请人： Richard A. Mowery, Jr.

发明人： Richard A. Mowery, Jr.

IPC分类号： G01N30/40 ,  G01N30/46 ,  G01N31/08

CPC分类号： G01N30/40 ,  G01N2030/407 ,  G01N30/461

摘要： An analysis of the concentration of the individual components of a sample is obtained using a chromatographic analyzer where the concentrations of the individual components or the sensitivity of the detector to the individual components vary over a wide range. The sample is injected into a first chromatographic column and trace components of interest are eluted to a detector for measurement. The major components are backflushed, diluted, provided to a second chromatographic column and then eluted to a detector for measurement. The dilution of the major components ensures the linearity of the detector response. Analysis of both the trace components and major components is thus provided.

摘要翻译： 使用色谱分析仪获得样品的各个组分的浓度分析，其中各组分的浓度或检测器对各组分的灵敏度在宽范围内变化。 将样品注入第一色谱柱，并将感兴趣的痕量组分洗脱到检测器进行测量。 将主要组分反吹，稀释，提供至第二色谱柱，然后洗脱至检测器进行测量。 主要部件的稀释度确保了检测器响应的线性。 因此提供了痕量组分和主要组分的分析。

公开(公告)号：US4242107A

公开(公告)日：1980-12-30

申请号：US931402

申请日：1978-08-07

申请人： Anthony Jenkins

发明人： Anthony Jenkins

IPC分类号： G01N1/22 ,  G01N1/24 ,  G01N30/00 ,  G01N30/02 ,  G01N30/12 ,  G01N30/30 ,  G01N30/40 ,  G01N30/46 ,  G01N30/58 ,  G01N30/60 ,  B01D53/08

CPC分类号： G01N1/2214 ,  G01N30/00 ,  G01N1/24 ,  G01N2030/008 ,  G01N2030/025 ,  G01N2030/062 ,  G01N2030/121 ,  G01N2030/3015 ,  G01N2030/402 ,  G01N30/466 ,  G01N30/58 ,  G01N30/6069

摘要： An apparatus for sampling an atmosphere for the presence of a constituent in which a flow of the atmosphere is first drawn through a trap capable of releasably absorbing the constituent and the trap is then passed through a carrier gas stream which removes and conveys the constituent into a detector. The trap can comprise a rotatable disc of wire mesh which cuts continuously across a flow of the atmosphere and a carrier gas flow. The volume flow rate of the atmosphere is greater than that of the carrier gas so giving a large concentration gain of the constituent in the carrier flow. The apparatus can be used for detecting the presence in the atmosphere of vapors emanating from explosives and for this purpose the carrier gas flow can be directed into an electron capture detector.

摘要翻译： 一种用于采样气氛的装置，其中首先通过能够可释放地吸收组分和捕获阱的捕获阱的气流首先被吸入的组分的存在通过载气流，该载气流除去并将组分输送到 探测器。 捕集器可以包括可旋转的丝网，其可连续地切割大气流和载气流。 气体的体积流量大于载气的体积流量，从而在载体流中产生大量的成分浓度。 该装置可以用于检测在爆炸物发出的蒸气气氛中的存在，并且为此目的，载气流可以被引导到电子捕获检测器中。

公开(公告)号：US3800602A

公开(公告)日：1974-04-02

申请号：US3800602D

申请日：1972-10-26

申请人： HOOKER CHEMICAL CORP

发明人： JONES A

IPC分类号： G01N30/20 ,  G01N30/24 ,  G01N30/40 ,  G01N31/08

CPC分类号： G01N30/24 ,  G01N30/40 ,  G01N2030/204 ,  G01N2030/208

摘要： Apparatus and method for rapid chromatographic analysis of gaseous mixtures. Apparatus includes a programming valve arrangement comprising an eight port valve block, having a single channel and having a movable valve plate member slidably affixed thereto by a valve plate carrier which in a first position permits simultaneous sampling of the gas stream to be analyzed and back flushing of the chromatograph column and in a second position rapid analysis of the gas sample. By the addition of one or more six port programming valves or equivalent sampling means in series with the eight port valve, the apparatus may function to rapidly analyze two or more separate gas streams.

摘要翻译： 用于快速色谱分析气体混合物的装置和方法。 装置包括编程阀装置，其包括八通阀阀块，其具有单个通道并且具有通过阀板载体可滑动地固定到其上的可移动阀板构件，该阀板载体在第一位置允许同时取样要分析的气流和反冲洗 的色谱柱，并在第二个位置快速分析气体样品。 通过添加一个或多个六端口编程阀或与八端口阀串联的等效采样装置，该装置可以用于快速分析两个或更多个分离的气流。

公开(公告)号：US3121321A

公开(公告)日：1964-02-18

申请号：US73629958

申请日：1958-05-19

申请人： PHILLIPS PETROLEUM CO

发明人： KARASEK FRANCIS W

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

CPC分类号： G01N30/40 ,  G01N30/32 ,  G01N30/466 ,  G01N2030/201 ,  G01N2030/202 ,  G01N2030/402

公开(公告)号：US3111835A

公开(公告)日：1963-11-26

申请号：US85630259

申请日：1959-11-30

申请人： CORE LAB INC

发明人： JENKINS RALPH E

IPC分类号： G01N30/40

CPC分类号： G01N30/40 ,  Y10T436/21

公开(公告)号：US3068686A

公开(公告)日：1962-12-18

申请号：US76891058

申请日：1958-10-22

申请人： UNION CARBIDE CORP

发明人： HARMON RAYMOND G

IPC分类号： G01N30/20 ,  G01N30/40 ,  G01N30/46

CPC分类号： G01N30/468 ,  G01N30/40 ,  G01N30/461 ,  G01N2030/202

公开(公告)号：US11828739B2

公开(公告)日：2023-11-28

申请号：US17457120

申请日：2021-12-01

申请人： MLS ACQ, Inc.

发明人： Kelly Renee McPartland ,  Martin L. Spartz

IPC分类号： G01N30/74 ,  G01N30/30 ,  G01N30/20 ,  G01J3/42 ,  G01N30/12 ,  G01N30/40 ,  G01N30/32 ,  G01N30/72 ,  G01N21/3504 ,  G01N30/16 ,  G01N21/35 ,  G01N30/00 ,  G01N30/02

CPC分类号： G01N30/74 ,  G01J3/42 ,  G01N21/3504 ,  G01N30/12 ,  G01N30/16 ,  G01N30/20 ,  G01N30/30 ,  G01N30/32 ,  G01N30/40 ,  G01N30/7206 ,  G01N2021/3595 ,  G01N2030/008 ,  G01N2030/025 ,  G01N2030/121 ,  G01N2030/128 ,  G01N2030/328 ,  G01N2030/402 ,  G01N2030/743

摘要： A method and system for sample analysis involve a temporally-resolving separation of sample components. In the method, solvent vapors are condensed prior to entering a temporally-resolving separator, a GC column, for example, and solvent-depleted vapors are directed to the separator where constituents are resolved in time. A system for analyzing a sample comprises an injection port, a temporally-resolving separator (e.g., a GC column) and a conduit connecting the two. The injection port is at a temperature sufficiently high to vaporize the solvent and analytes present in a sample. The conduit is configured and/or operated to condense the solvent, while maintaining the analytes in the vapor phase.

公开(公告)号：US11169124B2

公开(公告)日：2021-11-09

申请号：US16197791

申请日：2018-11-21

申请人： Entech Instruments Inc.

发明人： Daniel B. Cardin

IPC分类号： G01N30/08 ,  G01N30/10 ,  G01N30/46 ,  G01N30/40 ,  G01N30/06 ,  G01N30/88 ,  G01N30/02 ,  G01N30/72 ,  G01N30/60

摘要： The disclosed system and method improve measurement of trace volatile chemicals, such as by Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GCMS). A first trapping system can include a plurality of capillary columns in series and a focusing column fluidly coupled to a first detector. The first trapping system can retain and separate compounds in a sample, including C3 hydrocarbons and compounds heavier than C3 hydrocarbons (e.g., up to C12 hydrocarbons, or compounds having a boiling point around 250° C.), and can transfer the compounds from the focusing column to the first detector. A second trapping system can receive compounds that the first trapping system does not retain, and can include a packed trap, a polar column and a PLOT column fluidly coupled to one or more second detectors. The second trapping system can remove water from the sample and can separate and detect compounds including C2 hydrocarbons and Formaldehyde.