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Issue 4, 2013
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Visual detection of glyphosate in environmental water samples using cysteamine-stabilized gold nanoparticles as colorimetric probe

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Abstract

In this study, a novel colorimetric method for rapid, sensitive and low-cost detection of glyphosate was developed using cysteamine-stabilized gold nanoparticles (CS-AuNPs). The CS-AuNPs could be aggregated easily in the presence of glyphosate through electrostatic interaction in acidic medium, resulting in a shift in the surface plasmon band and a consequent color change from red to blue (or purple). Therefore, the content of glyphosate could be determined by monitoring with the naked eyes or a UV-Vis spectrophotometer. The detection limit of the present method for glyphosate was 5.88 × 10−8 M, with the linear range of 0.500–7.00 μM. The proposed method is a promising approach for on-site screening of glyphosate content in environmental water samples without using any costly instruments.

Graphical abstract: Visual detection of glyphosate in environmental water samples using cysteamine-stabilized gold nanoparticles as colorimetric probe

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Publication details

The article was received on 29 Aug 2012, accepted on 02 Dec 2012 and first published on 03 Dec 2012


Article type: Paper
DOI: 10.1039/C2AY26391B
Anal. Methods, 2013,5, 917-924

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    Visual detection of glyphosate in environmental water samples using cysteamine-stabilized gold nanoparticles as colorimetric probe

    J. Zheng, H. Zhang, J. Qu, Q. Zhu and X. Chen, Anal. Methods, 2013, 5, 917
    DOI: 10.1039/C2AY26391B

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