METHOD FOR MAKING SENSING MEMBRANE OF ARGENTIC AND SULFIDE ION SELECTIVE ELECTRODE WITH A BASE OF AG DOWN 2 S AS WELL AS OF CADMIUM AND LEAD ION SELECTIVE ELECTRODE WITH A BASE OF PBS-AD DOWN 2 S OR CDS-AG DWN 2 S

摘要

A concentrated soln. of silver- or metal ions is added to a sulphide soln. under controlled conditions to an optimum sulphide concn. The precipitate is dried and pressed at RT for 5-600 secs at a pressure of 1.2-2.5 x 10 Pa to produce a membrane electrode.