专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明授权

US5290520A Analytic separation arrangement and method for the analysis of chemical samples 失效
标题翻译：分析分析方法和化学样品分析方法
公开(公告)号：US5290520A
公开(公告)日：1994-03-01
申请号：US990213
申请日：1992-12-14
申请人： Francois Maystre , Alfredo E. Bruno
发明人： Francois Maystre , Alfredo E. Bruno
IPC分类号： G02F1/13 , C09K19/30 , C09K19/46 , C09K19/54 , G01N30/02 , G01N30/34 , G01N30/62 , G01N30/74 , G01N30/78 , G01N30/84 , G01N21/01
CPC分类号： G01N30/34 , G01N30/74 , C09K2219/17 , G01N2030/027 , G01N2030/625 , G01N2030/8435 , G01N30/78
摘要： An analytic separation arrangement includes a system of tubes including a separation zone, preferably a separation column, which tubes upstream the separation zone are connected with reservoirs for a carrier and a chemical sample to be seperated and analyzed, and downstream the separation zone are connected with a waste container for the carrier containing the sample and also are connected with transporting means for the carrier and the sample. The tube system is associated with an optical detector for monitoring changes in the absorption, in the fluorescence or in the optical activity of the carrier when it is transported through the tube system and past the optical detector, which is arranged in the path of the carrier behind the separation zone but in front of the waste container. Between the separation zone and the optical detector there is arranged in the path of the carrier a refractive index equalizing unit. Prior to being transported past the optical detector the carrier, which is comming from the separation zone, is directed through the refractive index equalizing unit, where its refractive index is preferably constantly monitored and where upon detection of changes of the refractive index of the carrier the deviation is compensated by adding to the carrier a compensating agent.
摘要翻译：分析分离装置包括管系统，其包括分离区，优选分离塔，分离区上游的管与用于载体和待分离和分析的化学样品的储存器连接，分离区的下游与用于包含样品的载体的废物容器，并且还与用于载体和样品的输送装置连接。管系统与光学检测器相关联，用于监测载体在其被传送通过管系统并经过光学检测器的荧光或荧光光学活性时的变化，光检测器布置在载体的路径中在分离区后面，但在废物容器前面。在分离区域和光学检测器之间，在载体的路径中布置折射率均衡单元。在被传送通过光学检测器之前，从分离区转移的载体被引导通过折射率均衡单元，其折射率优选地被不断地监测，并且在检测到载体的折射率变化的地方通过向载体添加补偿剂来补偿偏差。

62. 发明授权

US5236847A Method for analyzing amino acids and apparatus therefor 失效
标题翻译：分析氨基酸的方法及其设备
公开(公告)号：US5236847A
公开(公告)日：1993-08-17
申请号：US797942
申请日：1991-11-26
申请人： Hiroshi Satake , Yoshio Fujii , Kohta Kimiyoshi
发明人： Hiroshi Satake , Yoshio Fujii , Kohta Kimiyoshi
IPC分类号： G01N30/34 , G01N30/30 , G01N30/32 , G01N30/74 , G01N30/84 , G01N30/88
CPC分类号： G01N30/32 , G01N2030/3007 , G01N2030/324 , G01N2030/8435 , G01N2030/8813 , G01N30/34 , G01N30/74 , Y10T436/255
摘要： A method for analyzing amino acids in biological liquids wherein a buffer liquid including unknown components to be analyzed is introduced to a separation column for separating amino acids. After reaction of the buffer liquid in a reactor, the amino acids are detected by a photometer. The flow rate of the buffer liquid is maintained at a predetermined value until the asparagine, glutamine acid and glutamine are separated from the separation column and the flow rate of the buffer liquid is varied stepwise or in linear gradient after separation of the above three components from the separation column.
摘要翻译：一种用于分析生物液体中的氨基酸的方法，其中将包含待分析的未知组分的缓冲液引入到用于分离氨基酸的分离塔中。在反应器中缓冲液体反应后，用光度计检测氨基酸。将缓冲液的流量保持在预定值，直到从分离塔分离出天冬酰胺，谷氨酰胺酸和谷氨酰胺，并且将上述三种组分分离后，缓冲液的流速逐步或以线性梯度变化分离柱。

63. 发明授权

US5151371A Method and scavenger gas for the analysis of oxygen-containing components using atomic emission spectrometry 失效
标题翻译：使用原子发射光谱法分析含氧组分的方法和清除气体
公开(公告)号：US5151371A
公开(公告)日：1992-09-29
申请号：US394316
申请日：1989-08-14
申请人： Bruce D. Quimby , James J. Sullivan
发明人： Bruce D. Quimby , James J. Sullivan
IPC分类号： G01N21/73 , G01N30/74 , G01N30/84
CPC分类号： G01N21/73 , G01N30/74 , G01N30/84 , Y10T436/20
摘要： The oxygen-selectivity of an atomic emission detection system is enhanced by introducing a carbon-containing, preferably non-oxygenated, gas as a portion of the reagent gas. In preferred embodiments, the reagent gas is nitrogen and/or hydrogen and up to about 50 volume percent of a C.sub.1 -C.sub.4 hydrocarbon gas.
摘要翻译：通过引入作为反应气体的一部分的含碳优选非氧化气体来增强原子发射检测系统的氧选择性。在优选的实施方案中，反应气是氮气和/或氢气，最多约为50体积％的C 1 -C 4烃气体。

64. 发明授权

US5123274A Hand-held sample gun for vapor collection 失效
标题翻译：用于蒸气收集的手持取样枪
公开(公告)号：US5123274A
公开(公告)日：1992-06-23
申请号：US81915
申请日：1987-07-08
申请人： Alf L. Carroll , Gabor Miskolczy , Freeman W. Fraim , Eugene K. Achter , David P. Lieb
发明人： Alf L. Carroll , Gabor Miskolczy , Freeman W. Fraim , Eugene K. Achter , David P. Lieb
IPC分类号： G01N1/00 , G01N1/02 , G01N1/22 , G01N1/28 , G01N1/40 , G01N21/76 , G01N27/417 , G01N30/02 , G01N30/06 , G01N30/08 , G01N30/12 , G01N30/14 , G01N30/16 , G01N30/30 , G01N30/40 , G01N30/46 , G01N30/62 , G01N30/64 , G01N30/72 , G01N30/84 , G01N31/12 , G01N33/00 , G01N33/22 , G01V9/00
CPC分类号： G01N30/461 , G01N1/02 , G01N30/08 , G01N30/12 , G01N30/84 , G01N33/0057 , G01V9/007 , G01N1/2214 , G01N1/2226 , G01N1/28 , G01N1/40 , G01N2001/022 , G01N2001/028 , G01N2030/025 , G01N2030/065 , G01N2030/085 , G01N2030/121 , G01N2030/122 , G01N2030/123 , G01N2030/125 , G01N2030/126 , G01N2030/143 , G01N2030/167 , G01N2030/3007 , G01N2030/3046 , G01N2030/3053 , G01N2030/3061 , G01N2030/3069 , G01N2030/3076 , G01N2030/3084 , G01N2030/626 , G01N2030/642 , G01N2030/8405 , G01N21/76 , G01N30/14 , G01N30/40 , G01N30/62 , G01N30/72
摘要： A highly selective, sensitive, fast detection system and method are disclosed for detecting vapors of specific compounds in air. Vapors emanating from compounds such as explosives, or stripped from surfaces using heat and suction from a hand-held sample gun, are collected on surface coated with gas chromatograph (GC) material which trap explosives vapors but repel nitric oxide, then are desorbed and concentrated in one or more cold spot concentrators. A high speed gas chromatograph (GC) separates the vapors, after which specific vapors are decomposed in two pyrolyzers arranged in parallel and the resulting nitric oxide is detected. A low temperature pyrolyzer with silver produces NO from nitramines or nitrite esters; a high temperature pyrolyzer decomposes all explosives vapors to permit detection of the remaining explosives. Also disclosed is a series arrangement of pyroloyzers and gas chromatographs and an NO detector to time-shift detection of certain vapors and facilitate very fast GC analyses. The use of hydrogen as a carrier gas, plus unique collectors and concentrators, high speed heaters, NO detectors, and very fast, temperature-programmable GC's enhance selectivity, sensitivity and speed of detection.
摘要翻译：公开了一种高选择性，灵敏，快速的检测系统和方法，用于检测空气中特定化合物的蒸气。从化学品如爆炸物或从手持式样品枪吸取热量从表面剥离的蒸气在被气相色谱（GC）材料涂覆的表面上收集，该气相色谱（GC）材料捕获爆炸物蒸气但排斥一氧化氮，然后被解吸和浓缩在一个或多个冷点浓缩器中。高速气相色谱仪（GC）分离蒸汽，之后特定的蒸汽在平行排列的两个热解器中分解，并检测到所产生的一氧化氮。含有银的低温热解器由硝胺或亚硝酸酯产生NO; 高温热解器分解所有炸药蒸气，以便检测剩余的炸药。还公开了热解器和气相色谱仪的串联布置，以及用于某些蒸气的时移检测的NO检测器，并促进非常快速的GC分析。使用氢气作为载气，加上独特的收集器和浓缩器，高速加热器，NO检测器和非常快速的温度可编程GC增强了选择性，灵敏度和检测速度。

65. 发明授权

US5092219A Selective decomposition of nitrite esters and nitramines 失效
标题翻译：亚硝酸酯和硝胺的选择性分解
公开(公告)号：US5092219A
公开(公告)日：1992-03-03
申请号：US81967
申请日：1987-07-08
申请人： David P. Rounbehler , David H. Fine
发明人： David P. Rounbehler , David H. Fine
IPC分类号： G01N1/00 , G01N1/02 , G01N1/22 , G01N1/28 , G01N1/40 , G01N21/76 , G01N27/417 , G01N30/02 , G01N30/06 , G01N30/08 , G01N30/12 , G01N30/14 , G01N30/16 , G01N30/30 , G01N30/40 , G01N30/46 , G01N30/62 , G01N30/64 , G01N30/72 , G01N30/84 , G01N31/12 , G01N33/00 , G01N33/22 , G01V9/00
CPC分类号： G01N30/461 , G01N1/02 , G01N30/08 , G01N30/12 , G01N30/84 , G01N33/0057 , G01V9/007 , G01N1/2214 , G01N1/2226 , G01N1/28 , G01N1/40 , G01N2001/022 , G01N2001/028 , G01N2030/025 , G01N2030/065 , G01N2030/085 , G01N2030/121 , G01N2030/122 , G01N2030/123 , G01N2030/125 , G01N2030/126 , G01N2030/143 , G01N2030/167 , G01N2030/3007 , G01N2030/3046 , G01N2030/3053 , G01N2030/3061 , G01N2030/3069 , G01N2030/3076 , G01N2030/3084 , G01N2030/626 , G01N2030/642 , G01N2030/8405 , G01N21/76 , G01N30/14 , G01N30/40 , G01N30/62 , G01N30/72
摘要： A highly selective, sensitive, fast detection system and method are disclosed for detecting vapors of specific compounds in air. Vapors emanating from compounds such as explosives, or stripped from surfaces using heat and suction from a hand-held sample gun, are collected on surfaces coated with gas chromatograph (GC) material which trap explosives vapors but repel nitric oxide, then are desorbed and concentrated in one or more cold spot concentrators. A high speed gas chromatograph (GC) separates the vapors, after which specific vapors are decomposed in two pyrolyzers arranged in parallel and the resulting nitric oxide is detected. A low temperature pyrolyzer with silver produces NO from nitramines or nitrite esters; a high temperature pyrolyzer decomposes all explosives vapors to permit detetion of the remaining explosives. Also disclosed is a series arrangement of pyrolyzers and gas chromatographs and an NO detector to time-shift detection of certain vapors and facilitate very fast GC analyses. The use of hydrogen as a carrier gas, plus unique collectors and concentrators, high speed heaters, NO detectors, and very fast, temperature-programmable GC's enhance selectivity, sensitivity and speed of detection.
摘要翻译：公开了一种高选择性，灵敏，快速的检测系统和方法，用于检测空气中特定化合物的蒸气。从化合物如爆炸物或从手持式样品枪吸取热量从表面剥离的蒸气被收集在涂有气相色谱（GC）材料的表面上，该气相色谱（GC）材料捕获爆炸物蒸气但排斥一氧化氮，然后被解吸和浓缩在一个或多个冷点浓缩器中。高速气相色谱仪（GC）分离蒸汽，之后特定的蒸汽在平行排列的两个热解器中分解，并检测到所产生的一氧化氮。含有银的低温热解器由硝胺或亚硝酸酯产生NO; 高温热解器分解所有爆炸物蒸汽，以允许其他爆炸物的爆破。还公开了热解器和气相色谱仪的串联布置和用于某些蒸气的时移检测的NO检测器，并且促进非常快速的GC分析。使用氢气作为载气，加上独特的收集器和浓缩器，高速加热器，NO检测器和非常快速的温度可编程GC增强了选择性，灵敏度和检测速度。

66. 发明授权

US5045703A Cold trapping apparatus for infrared transmission analysis including a method and substrate therefor 失效
标题翻译：用于红外透射分析的冷藏装置，包括其方法和基板
公开(公告)号：US5045703A
公开(公告)日：1991-09-03
申请号：US175204
申请日：1988-03-30
申请人： Richard C. Wieboldt , Gregory E. Adams
发明人： Richard C. Wieboldt , Gregory E. Adams
IPC分类号： G01N1/22 , G01N1/40 , G01N21/35 , G01N21/84 , G01N30/02 , G01N30/74 , G01N30/82 , G01N30/84
CPC分类号： G01N21/35 , G01N1/40 , G01N1/2214 , G01N2021/3595 , G01N2030/025 , G01N2030/743 , G01N2030/8417 , G01N21/3504 , G01N21/8422 , G01N30/82
摘要： A gas sample collection device and method for cold trapping individual gas bands from a gas source that may include a chromatographic separation and for spectrographically analyzing the individual gas bands. The device includes a vacuum chamber containing a rotatably supported highly thermally conductive transmissive substrate having a highly thermally conductive support axle and at least one transmissive surface for holding a sample deposited thereon. A gas inlet is provided for depositing a mixture of sample and matrix material on the transmissive surface which is maintained at a sufficiently low temperature to cause solidification of the gas. A first set of optical elements directs an incident beam of electromagnetic analytical radiation from a source onto the solidified deposit, while a second set of optical elements directs the portion of incident beam transmitted through the deposit and substrate to a detector that is sensitive to the spectral wavelengths being investigated. A highly thermally conductive flexible strap is connected between the support axle and a cold head of a cryogenic refrigerator for transferring heat from the substrate. The strap is of sufficient length and flexibility to wrap around the axle as it is rotated through an angle of 360 degrees. A cold shield having closable apertures is provided for thermally insulating the substrate from warmer outside temperatures, the closable apertures being opened to allow access to the substrate for sample deposition and analysis. An insulated actuator is provided for imparting rotational movement to the axle and substrate assembly.
摘要翻译：一种气体样品收集装置和方法，用于从气源冷藏捕集单个气体带，其可以包括色谱分离并用于光谱分析各个气体带。该装置包括真空室，该真空室包含具有高导热性支撑轴的可旋转支撑的高导热性透射基板，以及用于保持沉积在其上的样品的至少一个透射表面。提供了一个气体入口，用于将样品和基质材料的混合物沉积在透明表面上，该透射表面保持在足够低的温度以引起气体凝固。第一组光学元件将来自源的电磁分析辐射的入射光束引导到固化的沉积物上，而第二组光学元件将透过沉积物和衬底的入射光束的部分引导到对光谱敏感的检测器正在研究的波长。高导热性柔性带连接在支撑轴与低温冰箱的冷头之间，用于从衬底转移热量。带子具有足够的长度和灵活性，以便绕着轴旋转360度的角度。提供了具有可闭合孔的冷屏，用于将衬底与更暖的外部温度隔热，可关闭的孔被打开以允许进入衬底以进行样品沉积和分析。提供绝缘致动器以用于向轴和基板组件施加旋转运动。

67. 发明授权

US5039614A Method and apparatus for collecting samples for analysis of chemical composition 失效
标题翻译：用于收集样品以分析化学成分的方法和装置
公开(公告)号：US5039614A
公开(公告)日：1991-08-13
申请号：US539380
申请日：1990-06-15
申请人： Armenag Dekmezian , Tetsuya Morioka
发明人： Armenag Dekmezian , Tetsuya Morioka
IPC分类号： G01N1/18 , G01N1/40 , G01N15/02 , G01N30/00 , G01N30/02 , G01N30/30 , G01N30/44 , G01N30/74 , G01N30/80 , G01N30/84 , G01N30/88 , G01N35/00
CPC分类号： G01N30/84 , B01J20/291 , G01N1/18 , G01N1/40 , G01N35/00 , B01J2220/54 , G01N2001/4027 , G01N2030/027 , G01N2030/3084 , G01N2030/743 , G01N2030/8417 , G01N2030/8804 , G01N30/0005 , G01N30/02 , G01N30/44 , G01N30/80 , Y10T436/11 , Y10T436/113332 , Y10T436/25
摘要： An automated, on-line solvent elimination interface system is described for use in characterizing the Composition Distribution (CD) of unknown materials emerging from a fractionating unit or a process stream. Fractionated samples to be analyzed, such as a polymer, in highly diluted form in one or more solvents, are provided by a fractionation unit such as a gel permeation chromatograph (GPC), a high pressure liquid chromatograph (HPLC), or a field flow fractionator (FFF). A number of discharges of each particular fraction are supplied to individual collection units within the interface system under controlled conditions of flow rate, temperature and pressure (vacuum) such that the solvents are flash-evaporated at the collection unit. A sufficient solid residue is built up on the collection unit for analysis by, for example, a Fourier transform infrared (FTIR) analyzer.
摘要翻译：描述了一种自动化的在线溶剂消除界面系统，用于表征从分馏单元或工艺流出现的未知材料的组成分布（CD）。通过分离单元例如凝胶渗透色谱仪（GPC），高压液相色谱仪（HPLC）或场流（HPLC）提供在一种或多种溶剂中以高度稀释的形式分析的分析样品，例如聚合物，分馏器（FFF）。在流量，温度和压力（真空）的受控条件下，将各种特定级分的多次放电提供给接口系统内的各个收集单元，使得溶剂在收集单元处闪蒸。在收集单元上建立了足够的固体残留物，用于通过例如傅里叶变换红外（FTIR）分析仪进行分析。

68. 发明授权

US5012052A Isotope-ratio-monitoring gas chromatography-mass spectrometry apparatus and method 失效
标题翻译：同位素比监测气相色谱 - 质谱仪及方法
公开(公告)号：US5012052A
公开(公告)日：1991-04-30
申请号：US173297
申请日：1988-03-22
申请人： John M. Hayes
发明人： John M. Hayes
IPC分类号： G01N27/62 , G01N30/72 , G01N30/84 , H01J49/04 , H01J49/26
CPC分类号： G01N30/84 , G01N30/7206 , G01N2030/8405 , G01N2030/8423 , G01N2030/8435
摘要： An isotope-ratio-monitoring gas chromatography-mass spectrometry apparatus and method are disclosed which provide for on-line analysis of isotope compositions with high precision. With the apparatus and method, samples are introduced in a hydrogen carrier gas into a gas chromatograph and resolved into discrete compounds. The discrete compounds are thereafter introduced to a selectively permeable membrane separator, empolying palladium, palladium alloy or other suitable material, to separate out the hydrogen carrier. A replacement carrier gas is simultaneously introduced to carry the chromatographic sample to a combustion reactor, water separator and isotope-ratio-monitoring mass spectrometer. The replacement carrier gas is introduced at a lower flowrate than the hydrogen carrier gas, thus permitting lower flowrates to be introduced to the mass spectrometer to improve its precision. Flowrates to the mass spectrometer are thus reduced without any loss or fractionation of the sample. An improved combustion system is employed to reduce system volume and equalize system pressure, while still providing quantitative combustion.
摘要翻译：公开了同位素比监测气相色谱 - 质谱分析装置和方法，其提供高精度同位素组成的在线分析。利用该装置和方法，将样品在氢气载气中引入气相色谱仪中并分离成离散的化合物。然后将离散的化合物引入选择性渗透的膜分离器中，使钯，钯合金或其它合适的材料分解出氢载体。同时引入替代载气，将色谱样品运送到燃烧反应器，水分离器和同位素比监测质谱仪。替换的载气以比氢载气更低的流量被引入，从而允许较低的流量被引入质谱仪以提高其精度。因此，降低到质谱仪的流出而没有样品的任何损失或分级。采用改进的燃烧系统来降低系统体积和均衡系统压力，同时仍然提供定量燃烧。

69. 发明授权

US4988870A Open-split interface for mass spectrometers 失效
标题翻译：用于质谱仪的开放式界面
公开(公告)号：US4988870A
公开(公告)日：1991-01-29
申请号：US418675
申请日：1989-10-10
申请人： John W. Diehl
发明人： John W. Diehl
IPC分类号： G01N30/38 , G01N30/60 , G01N30/72 , G01N30/84 , H01J49/04
CPC分类号： G01N30/7213 , G01N2030/383 , G01N2030/6013 , G01N30/84
摘要： An open-split interface includes a connector body having four leg members projecting therefrom within a single plane, the first and third legs being coaxial and the second and fourth legs being coaxial. A tubular aperture extends through the first and third legs and a second tubular aperture extends through the second and fourth legs, connecting at a juncture within the center of the connector body. A fifth leg projects from the connector body and has a third tubular aperture extending therethrough to the juncture of the first and second tubular apertures. A capillary column extends from a gas chromatograph into the third leg with its end adjacent the juncture. A flow restrictor tube extends from a mass spectrometer through the first tubular aperture in the first and third legs and into the capillary columnm end, so as to project beyond the end of the third leg within the capillary column. An annular gap between the tube and column allows excess effluent to pass to the juncture. A pair of short capillary columns extend from separate detectors into the second tubular aperture in the second and fourth legs, and are oriented with their ends spaced slightly from the first capillary column end. A sweep flow tube is mounted in the fifth leg so as to supply a helium sweep flow to the juncture.
摘要翻译：开放式接口包括连接器主体，其具有在单个平面内从其突出的四个腿部构件，第一和第三腿部是同轴的，第二和第四腿部是同轴的。管状孔延伸穿过第一和第三腿，并且第二管状孔延伸穿过第二和第四腿，在连接器主体的中心内的连接处连接。第五条腿从连接器主体突出并且具有延伸穿过其延伸到第一和第二管状孔的接合处的第三管状孔。毛细管柱从气相色谱仪延伸到第三条腿，其端部邻近接合处。限流管从质谱仪延伸穿过第一和第三腿中的第一管状孔并进入毛细管柱端，以便在毛细管柱内突出超过第三腿的端部。管和柱之间的环形间隙允许多余的流出物通过接合处。一对短毛细管柱从单独的检测器延伸到第二和第四腿中的第二管状孔中，并且它们的端部与第一毛细管柱端部间隔开。扫流管安装在第五支腿中，以便向接头提供氦吹扫流。

70. 发明授权

US4916313A Method and apparatus for the determination of isotopic composition 失效
标题翻译：测定同位素组成的方法和装置
公开(公告)号：US4916313A
公开(公告)日：1990-04-10
申请号：US238910
申请日：1988-08-31
申请人： Keith Hall , Philip A. Freedman , Elizabeth J. Jumeau , Roger Guilluy , Christiane Pachiaudi , Jean P. Riou
发明人： Keith Hall , Philip A. Freedman , Elizabeth J. Jumeau , Roger Guilluy , Christiane Pachiaudi , Jean P. Riou
IPC分类号： G01N27/62 , G01N30/62 , G01N30/72 , G01N30/84 , G01N30/88
CPC分类号： H01J49/0009 , G01N30/7206 , G01N30/84 , G01N2030/625 , Y10T436/24
摘要： The invention provides a method and apparatus for the mass spectrometric determination of the isotopic composition of an element comprised in a sample by gas chromatography-isotopic ratio mass spectrometry. As a sample elutes from the column of the gas chromatograph it enters a sample conversion means which converts the element to an analysis gas (a gas comprising the element in elemental form or in the form of a simple compound, e.g. nitrogen or carbon dioxide) which is admitted into the mass spectrometer only during a second time interval corresponding to the elution of the peak containing the sample from the column. One or more calibration samples of a reference gas are admitted into the spectrometer during first time intervals which do not overlap the second time interval, thereby minimizing the contribution of the analysis gas to the reference gas mass analysis, and vice versa. Various devices are provided to minimize disturbance to the flow of gas into the spectrometer during practice of the method.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式