Application and study on resonance scattering spectra of diazotization-coupling reaction

ObjectiveTo study resonance light scattering(RLS)spectra of diazotization-coupling reaction and establish a new method for the determination of trace nitrite.MethodsRLS spectra was used to determine trace nitrite by the diazotization-coupling reaction between sulfanilic amide-N,N-dimethyl aniline-nitrite.ResultsThe linear range of this method was on 1.2×10^-3 g/L and the detection limit was 8.0×10^-5 g/L.ConclusionThe method were simple,with high sensitivity and good selectivity.It was used to deter mine trace nitrite in vegetable samples.The recovery was 92.8%~98.5%.