Set Comprising Ion-Selective Solid-Contact Electrodes
    1.
    发明申请
    Set Comprising Ion-Selective Solid-Contact Electrodes 审中-公开
    设置包含离子选择性固体接触电极

    公开(公告)号:US20080149501A1

    公开(公告)日:2008-06-26

    申请号:US11962422

    申请日:2007-12-21

    CPC classification number: G01N27/3335 G01N27/307 G01N27/4035

    Abstract: A set (1) comprising at least two ion-selective solid-contact electrodes comprises at least two ion-selective measuring points (6). Each measuring point (6) comprises a metal conductor (3) and/or an inner layer (7) of a conductive polymer and an outer, ion-selective membrane (8). At least two measuring points (6) are selective in each case with respect to a different ion of an analysis solution. One of the solid-contact electrodes can be used as a reference electrode.

    Abstract translation: 包括至少两个离子选择性固体接触电极的组(1)包括至少两个离子选择性测量点(6)。 每个测量点(6)包括导电聚合物和外部离子选择性膜(8)的金属导体(3)和/或内层(7)。 在每种情况下,至少两个测量点(6)相对于分析溶液的不同离子是选择性的。 固体接触电极之一可以用作参考电极。

    Low detection limit ion selective membrane electrodes
    3.
    发明授权
    Low detection limit ion selective membrane electrodes 失效
    低检测极限离子选择性膜电极

    公开(公告)号:US6126801A

    公开(公告)日:2000-10-03

    申请号:US121383

    申请日:1998-07-23

    CPC classification number: G01N27/3335

    Abstract: A new type of ion-selective solvent polymeric or liquid membrane electrode is constructed which allows to extend the measuring range at the lower end by at least six (6) orders of magnitudes. The new method can be used with membranes based on a neutral ionophore, a charged ionophore, or an ion-exchanger. Low detection limits are achieved by maintaining a very low and constant concentration of the primary ion and a sufficiently high concentration of an interfering ion in the internal reference solution. The low and constant concentration of the primary ion is either adjusted with the help of a solution of a hydrophilic ion buffer such as ethylenediamine tetraacetic acid or by adding an excess of a salt of an ion which forms a sparingly soluble salt with the primary ion, such as NaI for the primary ion Ag.sup.+. With the new technique, ion-selective electrodes can be used, for the first time, for environmental monitoring of heavy metal ions such as Pb.sup.2+ and Cd.sup.2+ at the submicromolar level.

    Abstract translation: 构建了一种新型的离子选择性溶剂聚合物或液膜电极,其允许将下端的测量范围扩展至少六(6)个量级。 该新方法可用于基于中性离子载体,带电离子载体或离子交换剂的膜。 通过保持非常低和恒定浓度的一次离子和足够高浓度的干扰离子在内部参比溶液中来实现低检测限。 通过亲水离子缓冲液如乙二胺四乙酸的溶液或通过加入过量的与初级离子形成微溶盐的离子盐,调节初级离子的低和恒定浓度, 例如初级离子Ag +的NaI。 采用这种新技术,离子选择性电极首次可用于亚微米级重金属离子(如Pb2 +和Cd2 +)的环境监测。

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