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首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >An in situ derivatization combined with magnetic ionic liquid-based fast dispersive liquid-liquid microextraction for determination of biogenic amines in food samples
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An in situ derivatization combined with magnetic ionic liquid-based fast dispersive liquid-liquid microextraction for determination of biogenic amines in food samples

机译：一种原位衍生化与磁离子液体液体快速分散液 - 液微萃取液体微萃取，用于测定食品样品中的生物胺

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摘要

A simple, rapid and sensitive method based on in situ derivatization combined with magnetic ionic liquid (MIL)-dispersive liquid-liquid microextraction (DLLME) was developed for the determination of biogenic amines (BAs). Six BAs (tryptamine, phenylethylamine, histamine, tyramine, spermidine, and spermine) were in situ derivatized with dansyl chloride (DNS-Cl), extracted by MIL-DLLME, and then chromatographed by high-performance liquid chromatography with ultraviolet detection (HPLC-UV). This MIL trihexyltetradecylphosphonium tetrachlorocobalt (II) [P-6,6,6,14(+)](2)[CoCl42-] was explored as the extraction solvent with the advantages of magnetic susceptibility, hydrophobicity and mobile phase compatibility. Furthermore, the MIL was designed to reduce hydrolysis in aqueous solvent as well as decrease absorbance when submitted to HPLC. In order to obtain optimized extraction efficiency, the MIL mass, the volume of derivatizing agent, the type and volume of disperser, the derivatizing and extraction time, and pH of sample solution were investigated. The proposed method was successfully applied for the analysis of wine and fish samples, and the recoveries of analytes achieved were in the range of 93.2-103.1% and 94.5-102.3%, respectively. The limits of detection/quantification for wine and fish samples were in the range of 1.3-3.9/4.1-9.9 mu g/L and 1.2-3.8/3.9-9.6 mu g/kg, respectively. Additionally, good reproducibility with relative standard deviations lower than 4.9% (n = 5) was obtained for the analysis of wine and fish samples. The in situ DNS-Cl derivatization and MIL-DLLME method was an efficient, rapid, environmental friendly microextraction approach for the determination of BAs in foodstuffs.
机译：一个简单的，基于在原位衍生有磁性离子液体（MIL）合并-dispersive液 - 液微萃取（DLLME）快速，灵敏的方法是为生物胺（BAS）的测定开发的。六的BA（色胺，苯乙胺，组胺，酪胺，亚精胺和精胺）是就地与丹磺酰氯（DNS-Cl）的，由MIL-DLLME萃取衍生，然后通过紫外线检测高效液相色谱法（HPLC-色谱分离紫外线）。此MIL三己基十四tetrachlorocobalt（II）[P-6,6,6,14（+）]（2）[CoCl42-]进行了探索与磁化率，疏水性和流动相的相容性的优势提取溶剂。此外，MIL被设计以减少在水解水性溶剂以及减少当进行HPLC吸光度。为了获得优化的提取效率，该MIL质量，衍生剂，分散剂，衍生化和提取时间，和试样溶液的pH值的类型和体积的体积的影响。所提出的方法被成功地应用于酒和鱼样品的分析，和分析物达到的回收率分别为在93.2-103.1％和94.5-102.3％的范围内，。检测/定量的酒和鱼样品的极限分别为在1.3-3.9 / 4.1-9.9亩g / L和1.2-3.8 / 3.9-9.6亩克/千克的范围内，。此外，良好的再现性，相对标准偏差大于4.9％（N = 5）为降低酒和鱼样品的分析获得。原位DNS-CL衍生和MIL-DLLME方法是一种高效，快速，环保的微萃取技术的BA的用于测定食品中的方法。

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