Open AccessInfluence of plasticizer nature on the analytical characteristics of ion-selective electrodes based on higher quaternary ammonium salts reversible to doubly charged inorganic anions
Author(s) -
Yu. V. Matveichuk
Publication year - 2019
Publication title -
vescì nacyânalʹnaj akadèmìì navuk belarusì. seryâ hìmìčnyh navuk
Language(s) - English
Resource type - Journals
eISSN - 2524-2342
pISSN - 1561-8331
DOI - 10.29235/1561-8331-2018-54-4-428-433
Subject(s) - plasticizer , sulfite , inorganic chemistry , membrane , tungstate , ammonium molybdate , electrode , ammonium , molybdate , chemistry , selectivity , ether , organic chemistry , zinc , catalysis , biochemistry
It has been established that membranes of carbonate and hydrogen phosphate selective electrodes based on higher quaternary ammonium salts are preferable to be plasticized with o-nitrophenyldecyl ether, membranes of sulfate, selenate, selenite-selective electrodes with 1-bromonaphthalene, sulfite, molybdate, tungstate-selective electrodes with dibutylphthalate. The use of an optimum plasticizer allows, in general, reducing both the lower detection limit of electrodes and the values of selectivity coefficients by about 1 order (depending on the interfering ion). A qualitative explanation is given to the results obtained from the Fouoss theory and the Born model.