Highly sensitive and selective determination of iodide and thiocyanate concentrations using surface-enhanced Raman scattering of starch-reduced gold nanoparticles.

@article{Pienpinijtham2011HighlySA,
  title={Highly sensitive and selective determination of iodide and thiocyanate concentrations using surface-enhanced Raman scattering of starch-reduced gold nanoparticles.},
  author={Prompong Pienpinijtham and Xiao Xia Han and Sanong Ekgasit and Yukihiro Ozaki},
  journal={Analytical chemistry},
  year={2011},
  volume={83 10},
  pages={
          3655-62
        }
}
In this report, we propose a novel technique for the determination of the concentrations of iodide and thiocyanate by surface-enhanced Raman scattering (SERS) of starch-reduced gold nanoparticles. Starch-reduced gold nanoparticles show an intrinsic Raman peak at 2125 cm(-1) due to the -C≡C- stretching mode of a synthesized byproduct. Because of the high adsorptivity of iodide on a gold surface, the intensity of the SERS peak at 2125 cm(-1) decreases with an increase in the iodide concentration… CONTINUE READING