Preparation and properties of spherical chitosan hydrogel crosslinked with L-cystine for Cu2+ adsorption
WANG Sisi, YING Xiaoguang, ZHANG Weiying, LI Xiao
CIESC Journal . 2013, (9): 3437 -3445 .  DOI: 10.3969/j.issn.0438-1157.2013.09.048