FIELD: chemistry.
SUBSTANCE: zinc-selective electrode membrane, having an electrode-active component, a plasticiser, oleic acid and polyvinyl chloride, contains as the electrode-active substance amberlite IRA-400 - antipyrine-2COOH (AMB - ANT-2COOH) with oxy-azo groups, which form stable chelates with zinc ions; oleic acid as an ionic additive which increases selectivity of the electrode-active substance; dibutyl phthalate as the plasticiser, with a defined ratio of components.
EFFECT: high selectivity and long life of the electrode, low detection limit, short response time.
3 dwg, 1 tbl
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