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首页> 外文期刊>International journal of environmental analytical chemistry >Ionic liquid as hollow fibre membrane carrier for extraction of fluoroquinolone antibiotics in milk coupled with high-performance liquid chromatography quantification
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Ionic liquid as hollow fibre membrane carrier for extraction of fluoroquinolone antibiotics in milk coupled with high-performance liquid chromatography quantification

机译：离子液体作为中空纤维膜载体，用于萃取牛奶中的氟喹诺酮类抗生素和高效液相色谱定量

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摘要

A new hollow fibre liquid phase microextraction technology with an ionic liquid as the carrier was developed to determine the fluoroquinolone antibiotics in milk. In this technology, a porous polypropylene hollow fibre was filled with aqueous ionic liquid and the extraction efficiency of different factors, such as the type of hollow fibre membrane carrier, the pH and ionic strength of the donor solution, the pH of the acceptor solution, the stirring rate and the extraction time, were investigated. The optimised extraction condition was: [OMimflBFJ impregnated in the pores of the hollow fibre; 0.1mol L~(-1) of Na_2HPO_4 (pH 11.0) as the acceptor solution was injected into the lumen of the hollow fibre; 0.1mol L~(-1) H_3PO_4 (pH 5.0) was used as the donor solution; 600 rpm was selected as the stirring rate; 120min was the optimum extraction time. The proposed method provided very high factors with 130-fold, 156-fold and 116-fold enrichment of ofloxacin, ciprofloxacin and enrofloxacin, respectively.
机译：开发了一种以离子液体为载体的新型中空纤维液相微萃取技术，用于测定牛奶中的氟喹诺酮类抗生素。在这项技术中，向多孔聚丙烯中空纤维中填充离子液体水溶液，并影响不同因素的萃取效率，例如中空纤维膜载体的类型，供体溶液的pH和离子强度，受体溶液的pH，研究了搅拌速率和提取时间。优化的提取条件为：[OMimflBFJ浸渍在中空纤维的孔中；将0.1mol L〜（-1）Na_2HPO_4（pH 11.0）作为受体溶液注入中空纤维管腔中。供体溶液为0.1mol L〜（-1）H_3PO_4（pH 5.0）。选择600rpm作为搅拌速率；最佳提取时间为120min。所提出的方法提供了很高的因子，分别富集了氧氟沙星，环丙沙星和恩氟沙星的130倍，156倍和116倍。

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