Lab-on-Paper with Dual Electrochemical/Colorimetric Detection for Simultaneous Determination of Gold and Iron

Apilux, Amara; Dungchai, Wijitar; Siangproh, Weena; Praphairaksit, Narong; S. Henry, Charles; Chailapakul, Orawon

doi:10.1021/ac9022555

Public

Lab-on-Paper with Dual Electrochemical/Colorimetric Detection for Simultaneous Determination of Gold and Iron

Published in Analytical Chemistry • Feb 1, 2010

Authors:

Amara Apilux

Wijitar Dungchai

Weena Siangproh

Abstract

A novel lab-on-paper device combining electrochemical and colorimetric detection for the rapid screening of Au(III) in the presence of a common interference, Fe(III), in industrial waste solutions is presented here. With dilute aqua regia (0.1 M HCl + 0.05 M HNO(3)) as the supporting electrolyte, sq...

Subject

Chemistry

Detection limit

Aqua regia

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