Simultaneous ultrasound-assisted emulsification-derivatization as a simple and miniaturized sample preparation method for determination of nitrite in cosmetic samples by microvolume UV-vis spectrophotomety

1. Cabaleiro, N.
2. De La Calle, I.
3. Gil, S.
4. Pena, F.J.
5. Costas, M.
6. Bendicho, C.
7. Lavilla, I.