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Title: Paper-based analytical device for sampling, on-site preconcentration and detection of ppb lead in water
Authors: Thiphol Satarpai
Juwadee Shiowatana
Atitaya Siripinyanond
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology;Chemistry
Issue Date: 1-Jul-2016
Citation: Talanta. Vol.154, (2016), 504-510
Abstract: © 2016 Elsevier B.V. All rights reserved. A simple and cost effectiveness procedure based on a paper based analytical device (PAD) for sampling, on-site preconcentration and determination of Pb(II) in water samples was developed. The inkjet printing method was used for patterning of PAD. Colorimetric assay was developed on a PAD for Pb(II) detection in μg L-1 level. This μg L-1 level detection limit was achieved by in situ- and on-site preconcentration of Pb(II) onto adsorption filter paper disc with a home-made holder before color development. Water sample was loaded onto a circular filter paper coated with zirconium silicate in 3% sodium carboxymethylcellulose for Pb(II) preconcentration. Subsequently, sodium rhodizonate in tartrate buffer solution (pH 2.8) was used as colorimetric reagent for direct Pb(II) detection on a PAD. Detection was achieved by measuring the pink color and recorded by scanner or digital camera. ImageJ software was used for measuring grey scale values. The calibration curve was linear in the range of 10 μg L-1 and 100 μg L-1, with a detection limit of 10 μg L-1. The developed method was successfully applied to the determination of Pb(II) in drinking water, tap water and surface water near electronic waste storage and the results were compared with those by graphite furnace atomic absorption spectroscopy (GF-AAS) with good agreement.
ISSN: 00399140
Appears in Collections:Scopus 2016-2017

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