Ag2s membrane for detecting silver or halide ions in solution

Details Ag2s membrane for detecting silver or halide ions in solution Ag2s membrane for detecting silver or halide ions in solution

G - Physics

01

N

G01N 27/30 (2006.01) G01N 27/333 (2006.01)

Patent

CA 2076020

2076020 9112521 PCTABS00006 Silver sulphide crystalline membrane for the determination of silver ions or halide ions in solution and method of production. According to the invention, the membrane comprises silver sulphide doped with an ion capable of forming, either with Ag+ or with S2-, a salt presenting a much higher degree of insolubility than chemical species in solution. Preferably, the membrane also contains an inert hydrophobic compound. The membrane is prepared by co-precipitation of the silver sulphide and the doping agent, homogenizing with the hydrophobic compound and then pressing. The membrane may be used in an electrode for the determination of silver or halide ions in solution.

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