期刊
SENSORS
卷 17, 期 5, 页码 -出版社
MDPI AG
DOI: 10.3390/s17050954
关键词
glyphosate; silver nanoparticle; colorimetry; SERS
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Financiadora de Estudos e Projetos (FINEP)
- Fundacao Araucaria
- Gustavo R. C. Possetti and Ronald Gervasoni at Research and Development Consulting (APD)
- Regina Celia de Paula Cruz at the Conformance Assessment Service Unit (USAV), from Sanepar
- regional sanitation company
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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