|
KMID : 1059519850290020137
|
|
Journal of the Korean Chemical Society
1985 Volume.29 No. 2 p.137 ~ p.143
|
|
|
Preparation of a Liquid Membrance Type Ion-Selective Electrode and Its Application to the Potentiometric Titration
|
|
Lee Heung-Lark
Yang Seung-Tae
|
|
|
Abstract
|
|
|
|
Construction of a liquid membrane type of cupric ion selective electrode and its application to the potentiometric titration have been studied. A liquid ion-exchange membrance was prepared by extracting Cu(Ⅱ) in aqueous solution into 1-(2-pyridylazo)-2-naphthol/nitrobenzene. A Ag/AgCl internal reference electrode was dipped into the aqueous reference solution of 1.00 × 10-3M Cu(NO3)2 buffered with HAc-NaAc buffer solution, which was in contact with the nitrobenzene extract. The electrode showed the nernstian response to Cu(Ⅱ) in the concentration range from 1.00 × 10-6 to 1.00 × 10-3M. The most suitable ion-exchanger concentration in the liquid membrane was 1.00 × 10-4M. The selectivity coefficients of the electrode for the various metal cations were investigated. The electrode was applied to the potentiometric titration of Cu(Ⅱ) with EDTA.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|