Highly sensitive sensing and quantitative detection of sulfate ion with a SERS chip-based on boric acid’s Lewis effect

Raman and near-infrared spectroscopy for in-line sensors

“…Zhang et al developed SERS coupled with dispersive solid-phase extraction [14]. Gao et al reported highly sensitive detection of sulfate ion using SERS chip of silver nanoparticles [15]. The SERS chip enabled to improve the selectivity and sensitivity down to 10 nM.…”