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41 条记录 (耗时 0.034 秒)

    Dry analysis element for the analysis of iron ions
    13.
    发明授权
    Dry analysis element for the analysis of iron ions 失效
    干燥分析元素分析铁离子

    公开(公告)号：US5186894A

    公开(公告)日：1993-02-16

    申请号：US780740

    申请日：1991-10-18

    申请人： Harumi Katsuyama

    发明人： Harumi Katsuyama

    IPC分类号： G01N31/00 ,  G01N31/22 ,  G01N33/52 ,  G01N33/84 ,  G01N33/90

    CPC分类号： G01N33/90 ,  G01N33/526 ,  G01N33/84 ,  Y10T436/25125

    摘要： A dry analysis element for the analysis of iron ions, which is improved in selectivity so that iron ions can be analyzed reliably at a high sensitivity without the interferences by the presence of hindering Cu.sup.2+ and/or Zn.sup.2+ ions. The analysis element comprises a detection reagent layer containing Nitro-PAPS acting as a chelating agent and a cationic compound, and a pre-treating layer containing a Cu.sup.2+ -specific chelating agent. The analysis element further includes a pH buffer for keeping the pH value of the detection reagent layer within the range of from pH 3.0 to 5.0. The pH adjusting buffer may be contained in either one of the detection reagent layer or the pre-treating layer, or may be contained in another layer. The detection reagent layer may be composed of a coloring reagent layer containing Nitro-PAPS acting as the chelating agent, and a diffusion-preventing layer laminated on the coloring reagent layer and containing the cationic compound.

    Dry-type glucose analyzing element
    18.
    依法登记的发明
    Dry-type glucose analyzing element 失效
    干型葡萄糖分析元素

    公开(公告)号：USH930H

    公开(公告)日：1991-06-04

    申请号：US321977

    申请日：1989-03-10

    申请人： Keiko Kato ,  Fuminori Arai ,  Harumi Katsuyama

    发明人： Keiko Kato ,  Fuminori Arai ,  Harumi Katsuyama

    IPC分类号： G01N33/66 ,  C12Q1/54 ,  C12Q1/26 ,  C12Q1/28

    CPC分类号： C12Q1/54

    摘要： A dry-type quantitative glucose-analyzing element comprising a water-impermeable light-transmissive support having thereon a group of water-permeable layers comprising a reagent layer, an enzyme-containing layer, and a porous spreading layer which are laminated on said support in this order, and a hydrogen peroxide-detecting coloring composition comprising a hydrogen donor and a coupler; whereinsaid reagent layer contains at least said coupler;said enzyme-containing layer contains a glucose oxidase, a peroxidase and a mordant which immobilizes a dye formed by said coloring composition; andsaid hydrogen donor is contained in at least one water-permeable layer of said group. Using the element, quantitative determination of glucose of high concentration is possible with high accuracy.

    Reagent sheet and integral multilayer analytical element for measurement of GGT activity
    19.
    发明授权
    Reagent sheet and integral multilayer analytical element for measurement of GGT activity 失效
    用于测量GGT活性的试剂片和整体多层分析元件

    公开(公告)号：US4916059A

    公开(公告)日：1990-04-10

    申请号：US876975

    申请日：1986-06-20

    申请人： Shigeki Kageyama ,  Harumi Katsuyama

    发明人： Shigeki Kageyama ,  Harumi Katsuyama

    IPC分类号： C12Q1/48 ,  G01N33/52

    CPC分类号： G01N33/526 ,  C12Q1/48

    摘要： A reagent sheet for the measurement of GGT (.gamma.-glutamyl transferase) activity comprising a porous sheet containing a cationic surfactant and a self-developable substrate upon contact with .gamma.-glutamyl transferase. An integral multilayer analytical element for the measurement of GGT activity, comprising a porous spreading layer containing a cationic surfactant and a self-developable substrate in response to contact with .gamma.-glutamyl transferase, a water-absorbing layer and a support in a laminated form. The substrate can be either .gamma.-glutamyl-p-nitroamilide or .gamma.-glutamyl-3-carboxy-4-nitroamilide.

    摘要翻译： 用于测量GGT（γ-谷氨酰转移酶）活性的试剂片，其包含含有阳离子表面活性剂的多孔片材和与γ-谷氨酰转移酶接触时的自显影底物。 用于测量GGT活性的整体多层分析元件，包括响应于与γ-谷氨酰转移酶，吸水层和层叠形式的载体接触而含有阳离子表面活性剂和自显影底物的多孔扩散层。 底物可以是γ-谷氨酰 - 对 - 硝酰基苯胺或γ-谷氨酰基-3-羧基-4-硝基己酰苯胺。