eCite Digital Repository

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

Repository Staff Only: item control page