Sun L, Zhang C, Chen L, Liu J, Jin H, Xu H, Ding L. Preparation of alumina-coated magnetite nanoparticle for extraction of trimethoprim from environmental water samples based on mixed hemimicelles solid-phase extraction. Anal Chim Acta. 2009 Apr 13;638(2):162–8. doi: 10.1016/j.aca.2009.02.039. PMID: 19327455.
Preparation of alumina-coated magnetite nanoparticle for extraction of trimethoprim from environmental water samples based on mixed hemimicelles solid-phase extraction