eCite Digital Repository

A portable cyanide analyzer using gold wire electrodes

Citation

Sequiera, M and Hibbert, DB and Alexander, PW, A portable cyanide analyzer using gold wire electrodes, Electroanalysis, 11, (7) pp. 494-498. ISSN 1040-0397 (1999) [Refereed Article]

DOI: doi:10.1002/(SICI)1521-4109(199906)11:7<494::AID-ELAN494>3.0.CO;2-S

Abstract

We report on a continuous flow potentiometric analyzer for cyanide incorporating multiple gold-wire electrodes. The portable apparatus comprised a low-powered peristaltic pump, a Perspex multicell incorporating six indicator and six reference electrodes connected to an eight channel A/D converter. Real-time data may be displayed on a notebook computer. The system performance was optimized for sample peak heights, reproducibility, working ranges and calibration slopes. Well-defined peaks and fast response times (with peak widths <20 s) were observed using a carrier of 0.1 M sodium hydroxide at a flow rate of 5 mL min-1. The repeatability of the electrode response was 2.3 % (n = 5). The log-linear range was 0.25 to 70ppm (9.6 to 2700 μM) with slopes 96, 205 and 450 mV decade-1 for one, three and six electrodes in series, respectively.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Sensor Technology (Chemical aspects)
Objective Division:Manufacturing
Objective Group:Instrumentation
Objective Field:Scientific Instruments
Author:Alexander, PW (Professor Peter Alexander)
ID Code:17973
Year Published:1999
Web of Science® Times Cited:6
Deposited By:Applied Science
Deposited On:1999-08-01
Last Modified:2000-05-06
Downloads:0

Repository Staff Only: item control page