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Surface‐enhanced Raman scattering (SERS) spectra of fonofos, an organophosphorous pesticide (OPP), were recorded using citrate‐reduced silver (Ag) and gold (Au) colloidal nanoparticles in the form of dried films. In this study, significant enhancements were achieved with fonofos concentrations down to ∼10 ppm with the Ag colloids, demonstrating a potential for the technique in the analysis of fonofos...
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