采用酸碱滴定法测定壳聚糖和壳寡糖脱乙酰度分别为90.9%和90.1%,用IR方法表征了壳糖中乙酰基和氨基.MALDI-FT-MS进一步给出了经葡聚糖凝胶柱纯化后壳寡糖脱乙酰度和聚合度的信息.通过壳聚糖吸附性能的研究发现,壳聚糖对放射性核素铀具有较强的吸附能力,吸附率达96%以上,即使在大量Cu~(2+)存在情况下,也可高效吸附放射性核素铀,说明壳聚糖有望成为一种新型的放射性核素吸附去污材料.
The deacetylations(DD) of chitosan and chitooligosaccharide(COS) were estimated by titration of acid-base method as 90.9% and 90.1%, respectively. After Sephadex chromatography purification, the degree of polymerization(DP) and DD were obtained by MALDI-FT-MS. It was found that chitosan has high an adsorption of the radionuclide uranium. Chitosan showed high adsorption of radionuclide uranium even with the presence of large amount of Cu~(2+) ions. The adsorption efficiency is above 96%. This shows that chitosan has a great potential for the renoval of both heavy metals and radionuclides.
参考文献
[1] | Suzuki K,Mikami T,Okawa Y,Syzyki K,Mikami T,Okawa Y,Tokoro A,Suzuki S,Suzuki M.Carbohydr Res[J],1986,151:403 |
[2] | WANG Xiao-Hong(王小红),MA Jian-Biao(马建标),HE Bing-Lin(何炳林).J Funct Polym(功能高分子学报)[J],1997,28:903 |
[3] | Wei D W,Ye Y Z,Jia X P,Yuan C,Qian W P.Carbohydr Res[J],2010,345(1):74 |
[4] | Lee Y M,Park Y J.Biomaterial[J],2000,21(2):153 |
[5] | Sato M,Orushi H.Biol Pharm Bull[J],1996,19(9):1 170 |
[6] | LI Zhi(李治),LIU Xiao-Fei(刘晓非),XU Huai-Yu(徐怀玉),GUAN Yun-Lin(管云林),YAO Kang-De(姚康德).Chinese J Appl Chem(应用化学)[J],2001,18(2):104 |
[7] | DING De-Run(丁德润).J Inorg Chem(无机化学学报)[J],2005,21(8):1 249 |
[8] | SU Hai-Jia(苏海佳),HE Xiao-Jin(贺小进),TAN Tian-Wei(谭天伟).J Beijing Univ Chem Technol(北京化工大学学报)[J],2003,30(2):19 |
[9] | GUO Zhen-Chu(郭振楚),LIU Fu-Qing(刘福清),PENG Xiao-Zong(彭校宗).J Rare Earth(中国稀土学报)[J],2003,21(1):98 |
[10] | Liu J H,Chen X,Shao Z Z,Liu Y H,Liu Z H,Zhang Y Z,Deng K L.J Appl Polym Sci[J],2003,89(8):2 283 |
[11] | JIANG Chuan-Fu(姜传福).J Jinzhou Normal College(锦州师范学院学报)[J],2001,22(4):33 |
[12] | CAO Xiao-Hong(曹小红),LIU Yun-Hai(刘云海),ZHU Zheng(朱政),LUO Ming-Biao(罗明标).Chem Res Appl(化学研究与应用)[J],2006,18(7):878 |
- 下载量()
- 访问量()
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%