Solid Phase Extraction of Inorganic Mercury Using 5-Phenylazo-8-hydroxyquinoline and Determination by Cold Vapor Atomic Fluorescence Spectroscopy in Natural Water Samples-Reference-Cited by-同舟云学术

Solid Phase Extraction of Inorganic Mercury Using 5-Phenylazo-8-hydroxyquinoline and Determination by Cold Vapor Atomic Fluorescence Spectroscopy in Natural Water Samples

Published:2013 Issue: Volume:2013 Page:1-15
ISSN:1537-744X
Container-title:The Scientific World Journal
language:en
Short-container-title:The Scientific World Journal

Author:

Daye Mirna¹,Ouddane Baghdad¹^ORCID,Halwani Jalal²,Hamzeh Mariam¹

Affiliation:

1. Université Lille 1, Equipe Chimie Analytique et Marine, UMR-CNRS 8217 Géosystèmes, Villeneuve d’Ascq Cedex, France

2. Water & Environmental Sciences Laboratory (L.S.E.E), Lebanese University, Lebanon

Abstract

8-Hydroxyquinoline (8-HQ) was chosen as a powerful ligand for Hg solid phase extraction. Among several chelating resins based on 8-HQ, 5-phenylazo-8-hydroxyquinoline (5Ph8HQ) is used for mercury extraction in which the adsorption dynamics were fully studied. It has been shown that Hg(II) is totally absorbed by 5Ph8HQ within the first 30 minutes of contact time witht1/25 minutes, following Langmuir adsorption model. At pH 4, the affinity of mercury is unchallenged by other metals except, for Cu(II), which have shown higher Kd value. With these latter characteristics, 5Ph8HQ was examined for the preconcentration of trace levels of Hg(II). The developed method showed quantitative recoveries of Hg(II) with LOD = 0.21 pg mL−1and RSD = 3–6% using cold vapor atomic fluorescence spectroscopy (CV-AFS) with a preconcentration factor greater than 250.

Publisher

Hindawi Limited

Subject

General Environmental Science,General Biochemistry, Genetics and Molecular Biology,General Medicine

Link

http://downloads.hindawi.com/journals/tswj/2013/134565.pdf

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