Experimental designs in the optimization of a microwave acid digestion procedure for the determination of metals in paper and board samples by atomic absorption spectrometry

1. Otero-Pazos, A.
2. Pérez-Iglesias, J.
3. Férnandez-Solís, J.M.
4. Castro-Romero, J.M.
5. González-Soto, E.
6. González-Rodríguez, V.