A simple fabrication of plasmonic surface-enhanced Raman scattering (SERS) substrate for pesticide analysis via the immobilization of gold nanoparticles on UF membrane

作者：Hong Jangho; Kawashima Ayato; Hamada Noriaki

来源：Applied Surface Science, 2017, 407: 440-446.

DOI：10.1016/j.apsusc.2017.02.232

• Substrate's uniformity
• Simple concentration
• UF membrane
• Suction technique
• Gold nanoparticles
• Surface enhanced Raman scattering

In this study, we developed a facile fabrication method to access a highly reproducible plasmonic surface enhanced Raman scattering substrate via the immobilization of gold nanoparticles on an Ultrafiltration (UF) membrane using a suction technique. This was combined with a simple and rapid analyte concentration and detection method utilizing portable Raman spectroscopy. The minimum detectable concentrations for aqueous thiabendazole standard solution and thiabendazole in orange extract are 0.01 mu g/ and 0.125 mu g/g, respectively. The partial least squares (PLS) regression plot shows a good linear relationship between 0.001 and 100 mu g/mL of analyte, with a root mean square error of prediction (RMSEP) of 0.294 and a correlation coefficient (R2) of 0.976 for the thiabendazole standard solution. Meanwhile, the PLS plot also shows a good linear relationship between 0.0 and 2.5 mu g/g of analyte, with an RMSEP value of 0.298 and an R-2 value of 0.993 for the orange peel extract. In addition to the detection of other types of pesticides in agricultural products, this highly uniform plasmonic substrate has great potential for application in various environmentally-related areas.

• 出版日期2017-6-15