Ultrasonic assisted enzymatic digestion (USAED) coupled with high performance liquid chromatography and electrothermal atomic absorption spectrometry as a powerful tool for total selenium and selenium species control in Se-enriched food supplements

1. Vale, G.
2. Rodrigues, A.
3. Rocha, A.
4. Rial, R.
5. Mota, A.M.
6. Gonçalves, M.L.
7. Fonseca, L.P.
8. Capelo, J.L.