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Mercury ion‐selective polymeric membrane electrodes based on substituted diaza crown ethers
Author(s) -
Brzozka Zbigniew,
Pietraszkiewicz Marek
Publication year - 1991
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140030821
Subject(s) - membrane , potentiometric titration , chemistry , divalent , mercury (programming language) , inorganic chemistry , electrode , polymeric membrane , electrolyte , ion , ion selective electrode , selectivity , organic chemistry , catalysis , biochemistry , computer science , programming language
The potentiometric selectivities of membranes based on new N , N' ‐substituted 4, 13‐diaza‐18‐crown‐6 ethers were determined under different internal filling electrolytes and conditioning time of the membranes. The preference of Hg 2+ over other divalent cations was observed for compounds bearing 2‐methylquinolyl or 2‐methylquinolyl‐1‐oxide groups. The membrane electrodes with ionophores 1 and 2 exhibited a linear response in the activity range 10 −5 − 10 −3 M Hg(NO 3 ) 2 .