Abstract:
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%.