Rapid analysis of plastic stabilizer phthalates by surface enhancement Raman spectroscopy

Based on surface-enhanced Raman scattering (SERS) , a rapid qualitative analysis method of plastic stabilizer phthalates (PAEs) was established.By analyzing Raman spectra of DEHP, DBP, BBP, DINP, DIDP and DNOP, 8 characteristic peaks were figured out, which was further confirmed by theoretical calculation of di-2-ethyl hexyl phthalate (DEHP) by density functional theory (DFT) -the B3LYP method and the 6-311G (d) basis sets.Surface-enhanced Raman scattering (SERS) spectroscopy was realized by Au-nanosubstrate.In addition, qualitative analysis of trace PAEs in milk was performed, and the result was validated by gas chromatography-mass spectrometry (GC-MS) .The results demonstrated that SERS technology could be developed as a rapid method for screening of trace PAEs in food samples.