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Improving the chemiluminescence-based determination of sulphide in complex environmental samples by using a new, automated multi-syringe flow injection analysis system coupled to a gas diffusion unit

Citation

Maya, F and Estela, JM and Cerda, V, Improving the chemiluminescence-based determination of sulphide in complex environmental samples by using a new, automated multi-syringe flow injection analysis system coupled to a gas diffusion unit, Analytica Chimica Acta, 601, (1) pp. 87-94. ISSN 0003-2670 (2007) [Refereed Article]

Copyright Statement

Copyright 2007 Elsevier B.V.

DOI: doi:10.1016/j.aca.2007.08.030

Abstract

A new, completely automated multi-syringe flow injection analysis (MSFIA) system coupled to a gas diffusion unit (GDU) was used for the chemiluminescence (CL)-based determination of sulphide ion in various types of environmental matrices with a high sensitivity and selectivity, and the need for no manual sample pretreatment. Sulphide ions are transferred as H2S from the donor channel of the GDU to its acceptor channel (AC) through a hydrophobic membrane inserted between the two streams. The solution held in AC replaces the initial sample matrix, which may contain a wide variety of interferents, with one suitable for the CL determination of the analyte. Once sulphide ions have been isolated from the sample matrix, they are determined by their catalytic action on the luminol/H2O2 chemiluminescent reaction system. The influence of various chemical and hydrodynamic variables is discussed and the performance of the proposed system compared with that of existing flow systems for the same purpose. Under the operating conditions used, the proposed method features a linear working range of 0.022mgL−1, a limit of detection (3σblank) of 0.003mgL−1, a throughput of 20samplesh−1 and a coefficient of variation of 2.4% (n=10) for a 1mgL−1 sulphide concentration. The method was used to determine sulphide in leachates and various types of water samples.

Item Details

Item Type:Refereed Article
Keywords:flow analysis, chemiluminescence, multi-syringe flow injection analysis, gas diffusion, chemiluminescence detection, luminol, sulphide, environmental samples
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Flow Analysis
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
UTAS Author:Maya, F (Mr Fernando Maya Alejandro)
ID Code:127869
Year Published:2007
Web of Science® Times Cited:58
Deposited By:Chemistry
Deposited On:2018-08-19
Last Modified:2018-09-06
Downloads:0

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