The adsorbing process of the cellulose nitrate containing secondary amino group (ACN) for creatinine was studied by IR, 13C NMR and XPS techniques.

• 利用IR；13C NMR和XPS等技术研究了仲胺型硝化纤维素(ACN)对肌酐(CRE)的吸附行为；提出了可能的吸附路线.