Paper-based analytical device for sampling, on-site preconcentration and detection of ppb lead in water

被引:74
作者
Satarpai, Thiphol
Shiowatana, Juwadee
Siripinyanond, Atitaya [1 ]
机构
[1] Mahidol Univ, Dept Chem, Fac Sci, Rama 6 Rd, Bangkok 10400, Thailand
关键词
PAD; GF-AAS; Colorimetric assay; Lead; Water sample analysis; SOLID-PHASE EXTRACTION; ENVIRONMENTAL WATER; ELECTROCHEMICAL SENSOR; ZIRCONIUM SILICATE; TRACE LEAD; CADMIUM; IONS; SEAWATER; REMOVAL; COPPER;
D O I
10.1016/j.talanta.2016.04.017
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
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 pig L-1 level. This 14 L-1 level detection limit was achieved by in situ- and on-site pre concentration 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 g L-1 and 100 mu g L-1, with a detection limit of 10 mu g 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. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:504 / 510
页数:7
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