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

被引：23

作者：

De Goes, Rafael Eleodoro ^{[1
]}

Muller, Marcia ^{[1
]}

Fabris, Jose Luis ^{[1
]}

机构：

[1] Univ Tecnol Fed Parana, Grad Program Elect & Comp Engn CPGEI, BR-80230901 Curitiba, Parana, Brazil

来源：

SENSORS | 2017年 / 17卷 / 05期

关键词：

glyphosate; silver nanoparticle; colorimetry; SERS; LIQUID-CHROMATOGRAPHY; HERBICIDE GLYPHOSATE; COLORIMETRIC PROBE; GOLD NANOPARTICLES; SERS; SURFACE; SAMPLES; METALS; ACID; AGGREGATION;

D O I：

10.3390/s17050954

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

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