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Multisyringe flow injection analysis hyphenated with liquid core waveguides for the development of cleaner spectroscopic analytical methods: improved determination of chloride in waters

Citation

Maya, F and Estela, JM and Cerda, V, Multisyringe flow injection analysis hyphenated with liquid core waveguides for the development of cleaner spectroscopic analytical methods: improved determination of chloride in waters, Analytical and Bioanalytical Chemistry, 394, (6) pp. 1577-1583. ISSN 1618-2642 (2009) [Refereed Article]

Copyright Statement

Copyright 2009 Springer-Verlag

DOI: doi:10.1007/s00216-009-2745-5

Abstract

In this work, the hyphenation of the multisyringe flow injection analysis technique with a 100-cm-long pathlength liquid core waveguide has been accomplished. The Cl/Hg(SCN)2/Fe3+ reaction system for the spectrophotometric determination of chloride (Cl) in waters was used as chemical model. As a result, this classic analytical methodology has been improved, minimizing dramatically the consumption of reagents, in particular, that of the highly biotoxic chemical Hg(SCN)2. The proposed method features a linear dynamic range composed of two steps between (1) 0.22 and (2) 28mg Cl L−1, thus extended applicability due to on-line sample dilution (up to 400mg Cl L−1). It also presents improved limits of detection and quantification of 0.06 and 0.20mg Cl L−1, respectively. The coefficient of variation and the injection throughput were 1.3% (n = 10, 2mg Cl L−1) and 21h−1. Furthermore, a very low consumption of reagents per Cl determination of 0.2μg Hg(II) and 28μg Fe3+ has been achieved. The method was successfully applied to the determination of Cl in different types of water samples. Finally, the proposed system is critically compared from a green analytical chemistry point of view against other flow systems for the same purpose.

Item Details

Item Type:Refereed Article
Keywords:flow analysis, green analytical chemistry, multisyringe flow injection analysis, liquid core waveguide, long pathlength spectrophotometry, chloride determination, mercury thiocyanate
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:127863
Year Published:2009
Web of Science® Times Cited:17
Deposited By:Chemistry
Deposited On:2018-08-19
Last Modified:2018-09-06
Downloads:0

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