A guanidinium ionic liquid-based surfactant as an adequate solvent to separate and preconcentrate cadmium and copper in water using: In situ dispersive liquid-liquid microextraction

1. Khiat, M.
2. Pacheco-Fernández, I.
3. Pino, V.
4. Benabdallah, T.
5. Ayala, J.H.
6. Afonso, A.M.