A diethylenetriamine pentaacetic acid ion-selective plastic membrane electrode based on tricaprylylmethylammonium chloride

Authors
Wen, ML Peng, LJ Yin, CX Wang, CY
Citation
Ml. Wen et al., A diethylenetriamine pentaacetic acid ion-selective plastic membrane electrode based on tricaprylylmethylammonium chloride, S AFR J C-S, 51(4), 1998, pp. 171-173
Citations number
26
Categorie Soggetti
Chemistry
Journal title
SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE
ISSN journal
03794350 → ACNP
Volume
51
Issue
4
Year of publication
1998
Pages
171 - 173
Database
ISI
SICI code
0379-4350(199812)51:4<171:ADPAIP>2.0.ZU;2-H
Abstract
The construction and the general performance of a diethylenetriamine pentaa cetic acid (DTPA) ion-selective polyvinyl chloride (PVC) membrane electrode based on tricaprylylmethylammonium chloride (Aliquat 336S) were described. The electrode exhibited a rapid and near-Nernstian response (53.0 my decad e(-1)) to DTPA concentration ranging from 1 x 10(-2) to 1 x 10(-5) mol dm(- 3) within pH 3-7. Interfering effects of some other ions were reported. The electrode was applied for the direct assay of DTPA by means of the calibra tion technique. The method had the advantages of simplicity and speed.