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1. 发明授权

US4762799A Method and device for fluorescence determination of alkali metal cations 失效
标题翻译：用于荧光测定碱金属阳离子的方法和装置
公开(公告)号：US4762799A
公开(公告)日：1988-08-09
申请号：US775563
申请日：1985-09-13
申请人： William R. Seitz , Zhang Zhujun , Jerome Mullin
发明人： William R. Seitz , Zhang Zhujun , Jerome Mullin
IPC分类号： G01N21/64 , G01N33/487 , G01N21/77 , G01N33/20
CPC分类号： G01N21/643 , G01N21/6402
摘要： The concentration of a selected alkali metal cation in an aqueous sample is determined using an aqueous fill solution containing a dissolved polymeric cationic material (e.g., copper--PEI) and a dissolved fluorescent anionic material (e.g., ANS) and, in contact with the fill solution, an ionophore selective for the selected alkali metal cation. The aqueous fill solution is contacted with an aqueous sample through a membrane, the membrane being permeable to alkali metal cations, but impermeable to the polymeric cationic material. Fluorescence is detected either from molecules of fluorescent anionic material which have migrated from adjacent to the polymeric cationic material to adjacent to ionophore-complexed alkali metal cations or from molecules of fluorescent anionic material which have remained adjacent to the polymeric cationic material, or from both, especially through a fiber optic.
摘要翻译：使用含有溶解的聚合阳离子材料（例如，铜-PEI）和溶解的荧光阴离子材料（例如ANS）的含水填充溶液确定含水样品中所选择的碱金属阳离子的浓度，并且与填充物接触溶液，对选择的碱金属阳离子有选择性的离子载体。含水填充溶液通过膜与含水样品接触，该膜可渗透碱金属阳离子，但对于聚合物阳离子材料是不可渗透的。或者从已经从邻近聚合物阳离子材料迁移到邻近离子载体络合的碱金属阳离子或与聚合物阳离子材料相邻的荧光阴离子材料分子的荧光阴离子材料的分子或从两者分离出来的荧光，特别是通过光纤。

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