【作者】 徐波；

【导师】 宋大千；

【作者基本信息】 吉林大学 ， 分析化学， 2015， 硕士

【摘要】 本文将不同种微萃取技术用于提取环境及食品样品中的苏丹红染料。研究主要包括以下两部分：1.采用离子液体均匀液液微萃取-超快速液相色谱法对环境水样及食品样品中的四种苏丹红染料添加剂进行测定。实验证明该样品前处理方法具有简便、快速、高效和绿色环保等优点。2.合成新型材料-磁性聚苯胺用于磁性固相微萃取-超快速液相色谱法对环境水样中的四种苏丹红染料添加剂的测定。利用磁性分离简化了实验过程，建立了一种新型高效、便于操作、经济的处理方法，并且合成的材料可以回收循环利用，对环境更加友好。更多还原

【Abstract】 Sudan dyes are a group of synthetic lipophilic azo dyes and widely used ascoloring agents in industry. Due to the dyes and their metabolites may cause liver,spleen and bladder cancer, International Agency for Research on Cancer (IARC) hascategorized Sudan dyes as class3carcinogen. However, the dyes are lost inevitablyduring dyeing operation and easily enter environmental water system with industrialeffluents. In addition, Sudan dyes were unlawfully added in foodstuffs insteadof the coloring agent in food by unscrupulous merchants to restore the natural colorsduring the processing. Therefore, to protect human health and guarantee food security,it is very necessary to develop an efficient, convenient and green extraction method.Different pretreatment methods were established for extraction of Sudan dyes(Sudan I-IV) in environmental and foodstuff samples. There are two parts in thethesis:1. Homogeneous ionic liquid microextraction of Sudan dyes from environmental andfoodstuff samplesHomogeneous ionic liquid microextraction was introduced for extracting Sudandyes from water and foodstuff samples followed by detection using ultrafast liquidchromatography. The extraction of the analytes and formation of insoluble ionicliquid can be performed simultaneously. The consumption of organic solvent was very low, which could be considered as a green analytical method. Under the optimizedconditions, the limits of detection and quantification of the analytes were in the rangeof0.299-0.655ng/mL and0.989-2.162ng/mL, respectively. The intra-day andinter-day precision were in the range of1.29-4.68%(n=5) and2.11-6.41%(n=5),respectively. Recoveries obtained by analyzing seven kinds of real samples werebetween65.95and112.82%with the relative standard deviations lower than6.41%.The present method is more convenient, faster and environmentally friendlier thanother extraction methods.2. Magnetic solid-phase extraction of Sudan dyes in environmental water samplesMagnetic solid-phase extraction based on Fe3O4@polyaniline particles followedby ultrafast liquid chromatography was applied for determination of Sudan dyes inenvironmental water samples. The magnetic adsorbent can be used repeatedly. Underthe optimized conditions, the limits of detection of four kinds of Sudan dyes were0.041-0.151ng/mL and quantifications were0.989-2.162ng/mL, respectively. Theintra-day and inter-day precision were lower than6.8%. Recoveries obtained byanalyzing five kinds of environmental water samples were in the range of92.4-106.9%. Compared with other extraction methods, the present method is moreeffective with the advantages of convenience, low solvent consumption, shortextraction time and cost saving.更多还原