Cationic polymers and aptamers mediated aggregation of gold nanoparticles for the colorimetric detection of arsenic(iii) in aqueous solution
- 15 March 2012
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- Vol. 48 (37), 4459-4461
- https://doi.org/10.1039/c2cc30384a
Abstract
As(III) specifically interacts with an arsenic-binding aptamer to form an As(III)–aptamer complex, so that the following cationic polymer can aggregate gold nanoparticles (AuNPs) and cause a remarkable change in color, which enables the colorimetric detection of As(III) with high selectivity and a detection limit of 5.3 ppb.Keywords
This publication has 18 references indexed in Scilit:
- Colorimetric detection of DNA, small molecules, proteins, and ions using unmodified gold nanoparticles and conjugated polyelectrolytesProceedings of the National Academy of Sciences, 2010
- Highly Sensitive Voltammetric Speciation and Determination of Inorganic Arsenic in Water and Alloy Samples Using Ammonium 2‐Amino‐1‐Cyclopentene‐1‐DithiocarboxylateElectroanalysis, 2010
- Use of Gold Nanoparticles in a Simple Colorimetric and Ultrasensitive Dynamic Light Scattering Assay: Selective Detection of Arsenic in GroundwaterAngewandte Chemie International Edition, 2009
- Voltammetric methods for determination and speciation of inorganic arsenic in the environment—A reviewAnalytica Chimica Acta, 2009
- Surface‐Enhanced Raman Spectroscopy for Trace Arsenic Detection in Contaminated WaterAngewandte Chemie International Edition, 2008
- The use of gold nanoparticles in diagnostics and detectionChemical Society Reviews, 2008
- Gold Nanoelectrode Ensembles for the Simultaneous Electrochemical Detection of Ultratrace Arsenic, Mercury, and CopperAnalytical Chemistry, 2008
- Spectrophotometric Determination of Trace Arsenic in Water Samples Using a Nanoparticle of Ethyl Violet with a Molybdate−Iodine Tetrachloride Complex as a Probe for MolybdoarsenateAnalytical Chemistry, 2006
- Nanostructures in BiodiagnosticsChemical Reviews, 2005
- Arsenic speciation in the environmentChemical Reviews, 1989