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Continuous flow analysis of lead (II) and mercury (II) with substituted diazacrown ionophore membrane electrodes
Citation
Yang, X and Hibbert, DB and Alexander, PW, Continuous flow analysis of lead (II) and mercury (II) with substituted diazacrown ionophore membrane electrodes, Talanta, 45, (1) pp. 155-165. ISSN 0039-9140 (1997) [Refereed Article]
DOI: doi:10.1016/S0039-9140(97)00122-7
Abstract
A novel flow cell for use with ion-selective membrane electrodes is reported in which the carrier stream is drawn through a tube that suppresses the pump noise. PVC membrane electrodes based on 7,16-dithenyl-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane (DTODC), and 7,16-di-(2-thiopheneacetyl)-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane (DTAODC) for lead (II), and 7,16-dithenyl-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane (DTDC) and 7,16-di-(2-methylquinolyl)-1,4,10,13-tertraoxa-7,16-diazacyclootadecane (DQDC), for mercury (II) were prepared and evaluated. The linear ranges were pPb: 5.5-3.0 (DTODC) and 6.0-2.0 (DTAODC); pHg: 5.5-3.0 (DTDC) and 4.5-2.5 (DQDC). With flow rate of 3 ml min-1 the repeatability of measurements was less than 5% RSD (n = 3). The system was applied to the determination of lead (II) and mercury (II) in spiked natural 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 |
| Author: | Alexander, PW (Professor Peter Alexander) |
| ID Code: | 12366 |
| Year Published: | 1997 |
| Web of Science® Times Cited: | 18 |
| Deposited By: | Applied Science |
| Deposited On: | 1997-08-01 |
| Last Modified: | 2011-08-15 |
| Downloads: | 0 |
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