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Hydride Generation-smartphone RGB Readout and Visual Colorimetric Dual-mode System for the Detection of Inorganic Arsenic in Water Samples and Honeys

Overview
Journal Food Chem X
Date 2023 Mar 27
PMID 36968312
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Abstract

A miniaturized/portable dual-mode colorimetric analytical system was established for inorganic arsenic determination in honey and drinking water samples. Hydride generation (HG) was utilized as a sampling technique for this colorimetric system, because of its high generation efficiency and efficient matrix separation. AsH was generated HG and then reacted with HAuCl, gold nanoparticles (Au NPs) were formed on the paper sheet, leading the paper color changed from light yellow to dark blue, it could be readout by naked-eye (visual colorimetric mode) and a smartphone (RGB readout mode) simultaneously. The accuracy and potential application for field analysis were further confirmed by the analysis of two water samples, four honey samples and two certified reference water samples (BWB2440-2016 and GBW08650), good recoveries (90-116%) were obtained for those samples and their spiked samples.

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