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Sensors 2017, 17(5), 954;

Spectroscopic Detection of Glyphosate in Water Assisted by Laser-Ablated Silver Nanoparticles

Graduate Program in Electrical and Computer Engineering (CPGEI), Federal University of Technology-Parana, Curitiba 80230-901, Brazil
Author to whom correspondence should be addressed.
Academic Editor: Laura M. Lechuga
Received: 3 April 2017 / Revised: 19 April 2017 / Accepted: 20 April 2017 / Published: 26 April 2017
(This article belongs to the Special Issue Last Advances in Nanoplasmonics Biosensors)
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Glyphosate is one of the most widely used herbicides in the world. Its safety for both human health and aquatic biomes is a subject of wide debate. There are limits to glyphosate’s presence in bodies of water, and it is usually detected through complex analytical procedures. In this work, the presence of glyphosate is detected directly through optical interrogation of aqueous solution. For this purpose, silver nanoparticles were produced by pulsed laser ablation in liquids. Limits of detection of 0.9 mg/L and 3.2 mg/L were obtained with UV-Vis extinction and Surface Enhanced Raman spectroscopies, respectively. The sensing mechanism was evaluated in the presence of potential interferents as well as with commercial glyphosate-based herbicides. View Full-Text
Keywords: glyphosate; silver nanoparticle; colorimetry; SERS glyphosate; silver nanoparticle; colorimetry; SERS

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De Góes, R.E.; Muller, M.; Fabris, J.L. Spectroscopic Detection of Glyphosate in Water Assisted by Laser-Ablated Silver Nanoparticles. Sensors 2017, 17, 954.

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