壳聚糖定制膜作为电膜萃取的生物聚合物支撑体。
Chitosan tailor-made membranes as biopolymeric support for electromembrane extraction.
机构信息
Department of Analytical Chemistry, Faculty of Chemistry, Universidad de Sevilla, c/Prof. García González, s/n, 41012 Seville, Spain.
Department of Physical Chemistry, Faculty of Chemistry, Universidad de Sevilla, c/Prof. García González, s/n, 41012 Seville, Spain.
出版信息
Talanta. 2019 Jul 1;199:290-295. doi: 10.1016/j.talanta.2019.02.079. Epub 2019 Feb 22.
A chitosan membrane composed by 60% (w/w) chitosan and 40% (w/w) Aliquat®336 has been proposed as a new biopolymeric support for electromembrane extraction. The new support has been characterized by Scanning Electron Microscopy, resulting a 30-35 µm thickness. Amoxicillin, nicotinic acid, hippuric acid, salicylic acid, anthranilic acid, ketoprofen, naproxen and ibuprofen have been successfully extracted using the proposed support. Better enrichment factors were obtained for the acidic polar analytes than for the non-steroidal anti-inflammatory compounds (ranging from 118 for hippuric acid and 20 for ibuprofen). Electromembrane extraction was developed applying a DC voltage of 100 V, 1-octanol as supported liquid membrane and 20 min of extraction. The target analytes have also been satisfactorily extracted from human urine samples, providing high extraction efficiencies. The chitosan membrane is presented as a promising alternative for supporting liquid membrane compared to commonly used materials for this purpose.
一种由 60%（重量/重量）壳聚糖和 40%（重量/重量）Aliquat®336 组成的壳聚糖膜被提议作为电渗析萃取的新型生物聚合物支撑体。新的支撑体通过扫描电子显微镜进行了表征，厚度为 30-35 µm。使用所提出的支撑体成功地提取了阿莫西林、烟酸、马尿酸、水杨酸、邻氨基苯甲酸、酮洛芬、萘普生和布洛芬。酸性极性分析物的富集因子优于非甾体抗炎化合物（马尿酸为 118，布洛芬为 20）。通过施加 100 V 的直流电压、1-辛醇作为支撑液膜和 20 分钟的萃取来开发电渗析萃取。目标分析物也从人尿样中得到了满意的提取，提供了高的提取效率。与通常用于该目的的材料相比，壳聚糖膜作为支撑液膜的替代品具有很大的潜力。
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