NEKOUEI, S. ., & NEKOUEI, F. . (2015). DEVELOPMENT OF MULTIWALLED CARBON NANOTUBES BASED SOLID PHASE EXTRACTION FOR THE DETERMINATION OF TRACE LEVEL OF Mn(II) AND Sn(IV) IN RIVER WATER SAMPLES. Studia Universitatis Babeș-Bolyai Chemia, 60(2), 331–341. Retrieved from https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8454