6BALAZS N, SIPOS P. Limitations of pH-potentio-metric titration for the determination of the degree ofdeacetylation of chitosan[J]. Carbohydrate Research,2007,342(1):124-130.
7WANG Chao, YUAN Fang, PAN Jia-bao,et al. Anovel method for the determination of the degree ofdeacetylationof chitosan by coulometric titration [J].International Journal of Biological Macromolecules,2014,70(9):306-311.
8LAVERTUM,XIA Z,SERREQI A N,et al. Avalidated 1 H NMR method for the determination ofthe degree of deacetylation of chitosan[J]. Journal ofPharmaceutical and Biomedical Analysis, 2003,32(6):1149-1158.
9汪志君,碱量法测定壳聚糖中的胺基[j].化学世界,1986,27(1);22-23.
10ASTM F2260 - 03 (2012) el Standard test met hocfor determining degree of deacetylation in chitosansalts by proton nuclear magnetic resonanceC1 H NMR) spectroscopy[S].
