|
KMID : 1059519930370080773
|
|
Journal of the Korean Chemical Society
1993 Volume.37 No. 8 p.773 ~ p.778
|
|
|
Tallium(I) Ion-Selective Electrodes Based on Crown Ethers
|
|
Kim Sung-Min
Jung Sung-Uk
Kim Jin-Eun
Lee Shim-Sung
Kim Jae-Sang
|
|
|
Abstract
|
|
|
|
Poly(vinyl chloride)(PVC) membrane electrodes based on the lipophilic neutral carrier, dibenzo-18-crown-6(DB18C6) and benzo-15-crown-5 (B15C5) as the active sensors for Tl+ ion have been prepared and tested in different content of the potassium tetrakis(4-chlorophenyl)borate (KTClPB) as lipophilic salt. Dioctyl adipate (DOA), 2-nitrophenyl phenyl ether (NPPE) and o-nitrophenyl actyl ether (NPOE) were used as plasticizing solvent mediators. Electrodes exhibited good linear responses of 40∼55 mV decade-1 for Tl+ ion within the concentration ranges 10-1∼10-5M TlNO3. Selectivity coefficients of interfering ions (alkali metal, alkaline earth metal and some transition metal ions) for Tl+-ISE were determined by separate solution method and were sufficiently small for most of them. These crown ether type ion-selective electrodes are suitable for use with aqueous solution at pH > 3.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|