公开(公告)号：US5042293A

公开(公告)日：1991-08-27

申请号：US575279

申请日：1990-08-30

申请人： H. Paul Heyde

发明人： H. Paul Heyde

IPC分类号： G01N30/08 ,  G01N30/62 ,  G01N30/64 ,  G01N30/96 ,  G21C17/022

CPC分类号： G01N30/96 ,  G21C17/022 ,  G01N2030/085 ,  G01N2030/626 ,  G01N2030/645

摘要： A technique for measuring concentration of ions in the parts per trillion range (10.sup.-5 to 10.sup.-6 milligram per liter) uses a new interconnection of ordinary components in a four step technique. In the first two steps, standard solutions of known, but widely different, concentrations are measured to determine a calibration factor (C) which is then applied in the second two steps to determine the very weak unknown concentration of the sample. The process can be automated and is useful in applications such as nuclear power plants where the presence of even very small concentrations of certain ions is undesirable because of the extreme conditions prevailing, and such as the semiconductor industry where extreme purity is required.

摘要翻译： 用于测量每万亿分之一份（10-5至10-6毫克/升）的离子浓度的技术在四步技术中使用普通组分的新互连。 在前两个步骤中，测量已知但是差别很大的浓度的标准溶液以确定校准因子（C），然后在后两步中应用校准因子（C），以确定样品非常弱的未知浓度。 该方法可以是自动化的，并且在诸如核电站之类的应用中是有用的，其中由于主要的极端条件，甚至非常小浓度的某些离子的存在是不期望的，并且诸如需要极端纯度的半导体工业。

公开(公告)号：US4999098A

公开(公告)日：1991-03-12

申请号：US837330

申请日：1986-03-03

申请人： Christopher Pohl ,  Roseanne W. Slingsby ,  John R. Stillian ,  Ryszard Gajek

发明人： Christopher Pohl ,  Roseanne W. Slingsby ,  John R. Stillian ,  Ryszard Gajek

IPC分类号： G01N30/38 ,  G01N30/60 ,  G01N30/84 ,  G01N30/96

CPC分类号： G01N30/84 ,  G01N30/96 ,  G01N2030/387 ,  G01N2030/965

摘要： A suppressor for use in ion chromatography including at least an effluent flow channel separated by a charged membrane from a suppressor flow channel. A screen of the same charge as the membrane is placed in at least the effluent flow channel. Preferably, a similar screen is placed in the regenerant flow channel. The screen increases the dynamic capacity of the membrane suppressor.

摘要翻译： 用于离子色谱法的抑制剂，包括至少一个通过带电膜从抑制流道分离出的流出物流动通道。 至少将污染物流通道放置与膜相同电荷的屏幕。 优选地，将类似的屏幕放置在再生剂流动通道中。 屏幕增加了膜抑制器的动态容量。

公开(公告)号：US4925567A

公开(公告)日：1990-05-15

申请号：US317766

申请日：1989-03-02

申请人： David L. McAleese

发明人： David L. McAleese

IPC分类号： G01N30/02 ,  B01D15/08 ,  G01N30/34 ,  G01N30/96

CPC分类号： G01N30/96 ,  G01N2030/342 ,  G01N2030/965 ,  Y10T436/255

摘要： A stable baseline is achieved in a gradient ion chromatographic analysis by adding a nonionic modifier to the electrolytic eluent. The addition of the modifier may occur at any point upstream of the detector. The nonionic modifier has the effect of shifting the equilibrium of unsuppressed effluent electrolyte towards it nonionic form. For example, the addition of the nonionic modifier shifts both bicarbonate and carbonate towards the nonionic, nonconductive carbonic acid form.

公开(公告)号：US4751189A

公开(公告)日：1988-06-14

申请号：US838512

申请日：1986-03-11

申请人： Roy D. Rocklin

发明人： Roy D. Rocklin

IPC分类号： G01N30/60 ,  G01N30/96 ,  B01D15/08 ,  G01N30/02

CPC分类号： G01N30/96 ,  G01N2030/965 ,  Y10T436/255

摘要： A method of ion chromatography in which the sample passes through a chromatographic column, a suppressor, and a conductivity detector, using a gradient electrolyte eluent. A non-ionic polyhydroxy compound is added with the eluent to the chromatographic column at a concentration inversely related to the concentration of the electrolyte which increases with time. The effluent is passed through a membrane suppressor for the conductivity of the electrolyte. The regenerant stream in the suppressor includes a complexing agent (boric acid) which passes through the membrane into the effluent to form highly ionized complex which counterbalances the increased background conductivity of the electrolyte to stabilize the background conductivity in the conductor.

摘要翻译： 使用梯度电解质洗脱液，其中样品通过色谱柱，抑制剂和电导率检测器的离子色谱法。 将非离子多羟基化合物与洗脱液一起加入到色谱柱中，浓度与电解质浓度呈负相关，随浓度增加。 流出物通过膜抑制器以获得电解质的导电性。 抑制剂中的再生剂流包括络合剂（硼酸），其通过膜进入流出物以形成高度电离的络合物，其平衡电解质的增加的背景导电性以稳定导体中的背景导电性。

公开(公告)号：US4727034A

公开(公告)日：1988-02-23

申请号：US656212

申请日：1984-10-01

申请人： Susumu Matsushita ,  Tetsuo Ikushige

发明人： Susumu Matsushita ,  Tetsuo Ikushige

IPC分类号： G01N30/60 ,  G01N30/96 ,  G01N30/02

CPC分类号： G01N30/96 ,  G01N2030/965 ,  Y10T436/25125 ,  Y10T436/255

摘要： In chromatographic analysis by the steps of adding a sample solution to a flow of an eluant, passing the eluant flow through a separation column thereby converting the eluant flow into an eluate flow containing component ions of the eluant flow in separate zones, passing the eluate flow through an ion-exchange membrane tube thereby allowing the eluate to come into contact with an aqueous solution of an H.sup.+ form or OH.sup.- form electrolyte outside the tube through the wall of the membrane tube, substituting those of the component ions contained in the eluate flow which have the same type of electric charge as H.sup.+ or OH.sup.- with said H.sup.+ or OH.sup.- thereby giving rise to a deionized solution flow, and passing the deionized solution flow through a detection cell thereby causing the component ions which have survived the substitution to be detected as separated into distinct zones, improvements are obtained by causing the aqueous solution of H.sup.+ or OH.sup.- form electrolyte to be contacted with an insoluble ion exchanger of the same H.sup.+ or OH.sup.- type as said electrolyte to the aqueous solution. Use of a high molecular weight electrolyte having a molecular weight of 500 or more permits detecting anion or cation present in a very low concentration with ample sensitivity and high reproducibility without provision of forwarding means.

摘要翻译： 在通过将样品溶液添加到洗脱液流中的步骤的色谱分析中，使洗脱液流过分离柱，由此将洗脱液转化成含有分离区中洗脱液流分量离子的洗脱液流，使洗脱液流 通过离子交换膜管，从而使洗脱液通过膜管的壁与管外的H +形式或OH-型电解质的水溶液接触，代替洗脱液流中包含的组分离子的那些 其与H +或OH-具有与H +或OH-相同类型的电荷，从而产生去离子溶液流，并使去离子溶液流过检测单元，从而使得在取代中存活的组分离子为 被分离成不同的区域，通过使H +或OH-型电解质的水溶液与不溶性i 在与水溶液相同的H +或OH-型交换器上与所述电解质交换。 使用分子量为500以上的高分子量电解质，可以检测阴离子或阳离子的浓度非常低，具有充分的灵敏度和高再现性，而不需要提供转运方式。

公开(公告)号：US4726930A

公开(公告)日：1988-02-23

申请号：US769921

申请日：1985-08-27

申请人： Susumu Matsushita ,  Tetsuo Ikushige

发明人： Susumu Matsushita ,  Tetsuo Ikushige

IPC分类号： G01N30/60 ,  G01N30/96 ,  G01N30/02

CPC分类号： G01N30/96 ,  G01N2030/965 ,  Y10T436/25125 ,  Y10T436/255

摘要： In chromatographic analysis by the steps of adding a sample solution to a flow of an eluant, passing the eluant flow through a separation column thereby converting the eluant flow into an eluate flow containing component ions of the eluant flow in separate zones, passing the eluate flow through an ion-exchange membrane tube thereby allowing the eluate to come into contact with an aqueous solution of an H.sup.+ form or OH.sup.- form electrolyte outside the tube through the wall of the membrane tube, substituting those of the component ions contained in the eluate flow which have the same type of electric charge as H.sup.+ or OH.sup.- with said H.sup.+ or OH.sup.- thereby giving rise to a deionized solution flow, and passing the deionized solution flow through a detection cell thereby causing the component ions which have survived the substitution to be detected as separated into distinct zones, improvements are obtained by causing the aqueous solutions of H.sup.+ or OH.sup.- form electrolyte to be contacted with an insoluble ion exchanger of the same H.sup.+ or OH.sup.- type as said electrolyte to the aqueous solution. Use of a high molecular weight electrolyte having a molecular weight of 500 or more permits detecting anion or cation present in a very low concentration with ample sensitivity and high reproducibility without provision of forwarding means.

摘要翻译： 在通过将样品溶液添加到洗脱液流中的步骤的色谱分析中，使洗脱液流过分离柱，由此将洗脱液转化成含有分离区中洗脱液流分量离子的洗脱液流，使洗脱液流 通过离子交换膜管，从而使洗脱液通过膜管的壁与管外的H +形式或OH-型电解质的水溶液接触，代替洗脱液流中包含的组分离子的那些 其与H +或OH-具有与H +或OH-相同类型的电荷，从而产生去离子溶液流，并使去离子溶液流过检测单元，从而使得在取代中存活的组分离子为 被分离成不同的区域，通过使H +或OH-型电解质的水溶液与不溶性物质接触来获得改进 与所述电解质相同的H +或OH-型离子交换剂与水溶液。 使用分子量为500以上的高分子量电解质，可以检测阴离子或阳离子的浓度非常低，具有充分的灵敏度和高再现性，而不需要提供转运方式。

公开(公告)号：US4698209A

公开(公告)日：1987-10-06

申请号：US875455

申请日：1986-06-18

申请人： Kenshiro Hashimoto ,  Yasushi Okada

发明人： Kenshiro Hashimoto ,  Yasushi Okada

IPC分类号： G01N27/419 ,  G01N27/26 ,  G01N27/27 ,  G01N27/406 ,  G01N27/407 ,  G01N27/409 ,  G01N27/416 ,  G01N27/417 ,  G01N27/00 ,  G01N30/96

CPC分类号： G01N27/417 ,  G01N27/4065

摘要： An oxygen concentration sensing device for sensing an oxygen concentration in a gaseous body includes a pair of solid electrolyte members having oxygen ion permeability which are arranged to face each other forming a predetermined gap portion between them. Each of the solid electrolyte members is provided with a pair of electrodes and one of the solid electrolyte members is operative as an oxygen pump element when a drive current is supplied across the electrodes thereof and the other one of the solid electrolyte members is operative as a sensor cell element for producing a sensor output signal. The sensing device is provided with a current supply circuit for supplying the drive current of the oxygen pump element and a delay control circuit for delaying the increase of the magnitude of drive current of the oxygen pump element at a start time, so as to prevent an overcurrent to the oxygen pump element which otherwise is generated by the current supply circuit and causes the so called blackening phenomenon of the solid electrolyte members.

摘要翻译： 用于感测气体中的氧浓度的氧浓度检测装置包括一对具有氧离子渗透性的固体电解质构件，它们彼此面对地布置，在它们之间形成预定的间隙部分。 每个固体电解质构件设置有一对电极，并且当在其电极之间提供驱动电流时，固体电解质构件中的一个作为氧气泵元件工作，另一个固体电解质构件作为 用于产生传感器输出信号的传感器单元元件。 感测装置设置有用于提供氧泵元件的驱动电流的电流供给电路和用于在开始时间延迟氧泵元件的驱动电流的大小的增加的延迟控制电路，以便防止 过电流到氧气泵元件，否则由电流供应回路产生，并引起所谓的固体电解质成分的黑化现象。

公开(公告)号：US4672042A

公开(公告)日：1987-06-09

申请号：US686299

申请日：1984-12-26

申请人： James W. Ross, Jr. ,  Lionel S. Goldring ,  John H. Riseman

发明人： James W. Ross, Jr. ,  Lionel S. Goldring ,  John H. Riseman

IPC分类号： G01N30/60 ,  G01N30/96 ,  G01N30/14 ,  B01D13/00

CPC分类号： G01N30/96 ,  G01N2030/965 ,  Y10T436/25125 ,  Y10T436/255

摘要： An ion-chromatography system for analyzing one or more ionic species of a given polarity in solution, the system comprising an ion-exchange material reactive with such species, an eluant fluid, means for adding the eluant fluid and ionic species to the separation column, a stripper column and a detector. The eluant fluid includes at least a pair of electrically neutral molecular species reactive with one another to provide ionic constituents, the molecular species being in substantial equilibrium with the ionic constituents. The stripper column is positioned at the outlet of the separation column to receive the eluant fluid from the latter and reduce the concentration of the ionic constituents in the eluant fluid. The stripper column includes a conduit relatively permeable to the neutral molecular species in the eluant and relatively impermeable to the ionic constituents. Means are also provided for removing any of the neutral species that permeate the conduit, whereby a concentration gradient is established across the conduit. The detector is provided to quantitatively measure the chromatographically separated ionic species in the eluant discharged from the stripper column.

摘要翻译： 一种用于分析溶液中给定极性的一种或多种离子种类的离子色谱系统，该系统包括与这些物质反应的离子交换材料，洗脱液，用于将洗脱液和离子物质加入到分离塔中的装置， 汽提塔和检测器。 洗脱液包括至少一对彼此反应的电中性分子物质以提供离子组分，该分子种类与离子组分基本上平衡。 汽提塔位于分离塔的出口处，以从后者接收洗脱液，并降低洗脱液中离子成分的浓度。 汽提塔包括对洗脱液中的中性分子物质相对可渗透并且对离子组分相对不可渗透的导管。 还提供了用于去除透过导管的任何中性物质的装置，由此跨导管建立浓度梯度。 提供检测器以定量测量从汽提塔排出的洗脱液中的色谱分离的离子物质。

公开(公告)号：US4629705A

公开(公告)日：1986-12-16

申请号：US615985

申请日：1984-05-31

申请人： Hernan J. Cortes ,  Timothy S. Stevens

发明人： Hernan J. Cortes ,  Timothy S. Stevens

IPC分类号： G01N30/88 ,  B01D15/08 ,  G01N30/02 ,  G01N30/74 ,  G01N30/96 ,  G01N31/08 ,  G01N21/00

CPC分类号： G01N30/96 ,  G01N30/74

摘要： A versatile and highly sensitive procedure of indirect photometric chromatography in which a variable capacity pH dependent weakly basic or weakly acidic ion exchange medium is used in the chromatographic column to effect ion separations. Adjusting eluent pH allows increased detection limits without extended analysis time, reduced column efficiency, or the need for a battery of conventional strongly basic/acidic ion exchange columns.

摘要翻译： 间接光度色谱法的多功能和高灵敏度的程序，其中在色谱柱中使用可变容量的pH依赖性弱碱性或弱酸性离子交换介质来实现离子分离。 调节洗脱液pH值可以提高检测限度，无需延长分析时间，降低色谱柱效率，或需要一批常规的强碱性/酸性离子交换色谱柱。

公开(公告)号：US4567753A

公开(公告)日：1986-02-04

申请号：US682032

申请日：1984-12-12

申请人： Theodore E. Miller, Jr. ,  Ziad Iskandarani

发明人： Theodore E. Miller, Jr. ,  Ziad Iskandarani

IPC分类号： G01N30/74 ,  G01N30/02 ,  G01N30/26 ,  G01N30/46 ,  G01N30/88 ,  G01N30/96

CPC分类号： G01N30/96 ,  G01N30/02

摘要： An improved technique and apparatus for the independent measurement of anions and cations in solution, wherein the sample ions are chromatographically displaced in a plurality of ion exchange columns by an eluting ion which is or is made light-absorbing and wherein the sample ions are detectable from decrements in absorbance of the eluting ions as revealed by photometric monitoring; and the sample ions, cations and anions, are further detected independently by means for monitoring eluting anion and cation absorbance differences calibrated according to characteristic absorbance ratios of the selected eluting ion species at a plurality of wavelengths.