Department of Chemistry, Izmir Institute of Technology, Izmir, Turkey.
Biomacromolecules. 2010 Dec 13;11(12):3301-8. doi: 10.1021/bm100755x. Epub 2010 Nov 16.
Chitosan fibers showing narrow diameter distribution with a mean of 42 nm were produced by electrospinning and utilized for the sorption of Fe(III), Cu(II), Ag(I), and Cd(II) ions from aqueous solutions. The ion concentrations in the supernatant solutions were determined using inductively coupled plasma-mass spectrometry (ICP-MS). The filtration efficiency of the fibers toward these ions was studied by both batch and microcolumn methods. High efficiency in sorption of the metal ions was obtained in the both methods. The effects of sorbent amount (0.10-0.50 mg), shaking time (15-120 min), initial metal ion concentration (10.0-1000.0 μg·L(-1)), and temperature (25 and 50 °C) on the extent of sorption were examined. The sorbent amount did not significantly alter the efficiency of sorption; however, shaking time, temperature, and metal ion concentration were found to have a strong influence on sorption. By virtue of its mechanical integrity, the applicability of the chitosan mat in solid phase extraction under continuous flow looks promising.
通过静电纺丝制备了平均直径为 42nm、直径分布较窄的壳聚糖纤维，用于从水溶液中吸附 Fe(III)、Cu(II)、Ag(I)和 Cd(II)离子。使用电感耦合等离子体质谱法 (ICP-MS) 测定上清液中的离子浓度。通过批处理和微柱两种方法研究了纤维对这些离子的过滤效率。在这两种方法中都获得了金属离子的高效吸附。考察了吸附剂用量 (0.10-0.50mg)、搅拌时间 (15-120min)、初始金属离子浓度 (10.0-1000.0μg·L(-1)) 和温度 (25 和 50°C) 对吸附程度的影响。吸附剂用量对吸附效率没有显著影响，但搅拌时间、温度和金属离子浓度对吸附有很强的影响。由于其机械完整性，壳聚糖垫在连续流动固相萃取中的应用具有广阔的前景。
