eCite Digital Repository
Lead-Selective Membrane Electrodes Based on Dithiophenediazacrown Ether Derivatives
Citation
Yang, X and Kumar, N and Chi, H and Hibbert, DB and Alexander, PW, Lead-Selective Membrane Electrodes Based on Dithiophenediazacrown Ether Derivatives, Electroanalysis, 9, (7) pp. 549-553. ISSN 1040-0397 (1997) [Refereed Article]
DOI: doi:10.1002/elan.1140090709
Abstract
Three double-armed diazacrown ethers with two thiophene side groups, 7,16-dithenyl-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane (DTDC), 7,16-dithenoyl-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane (DTODC), and 7,16-di-(2-thiopheneacetyl)-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane (DTAODC), have been synthesized and used as novel neutral lead(II) ionophores in ion selective electrode applications. The relationship between the molecular structure of these ionophores and electrochemical properties (linear range, response time, selectivity) of the membrane electrode is discussed. The optimum conditions for the preparation of the electrodes are described. The optimized dithenoyldiazacrown had a detection limit of pPb = 5.7, and Nernstian range with slope 29.2 mV decade-1 from pPb = 5.0 to 2.7. Mercury and silver ions are the major interferences. These electrodes are applied to potentiometric titrations of lead(II) ions and show promise for the determination of lead ions in water samples.
Item Details
Item Type: | Refereed Article |
---|---|
Research Division: | Chemical Sciences |
Research Group: | Analytical chemistry |
Research Field: | Instrumental methods (excl. immunological and bioassay methods) |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Alexander, PW (Professor Peter Alexander) |
ID Code: | 12424 |
Year Published: | 1997 |
Web of Science® Times Cited: | 225 |
Deposited By: | Applied Science |
Deposited On: | 1997-08-01 |
Last Modified: | 2011-08-15 |
Downloads: | 0 |
Repository Staff Only: item control page