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首页> 外文会议>Theory and practice of energetic materials.;vol. 9. >Application of Dispersive Liquid-Liquid Microextraction Combined with UV-Vis Spectrophotometry for Preconcentration and Determination of 2-Methylaziridine in Water Samples
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Application of Dispersive Liquid-Liquid Microextraction Combined with UV-Vis Spectrophotometry for Preconcentration and Determination of 2-Methylaziridine in Water Samples

机译：分散液-液微萃取-紫外可见分光光度法在水样中2-甲基氮丙啶的富集和测定中的应用

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摘要

In this paper, we developed a novel and powerful method for preconcentration and spectrophotometric determination of trace amounts of 2methylaziridine in water samples by using dispersive liquid-liquid microextraction (DLLME) technique. The method is based on derivatisation of 2methylaziridine with two reagents, include Folin,s reagent (1,2-naphthoquione-4-sulphonic acid) and 2,4,6-trinitro benzenesulphonic acid (TNBS), separately, and extraction of product using DLLME technique. Some important parameters, such as reaction conditions and the kind and volume of extraction solvent and disperser solvent and concentration of reagents were studied and optimized. Under the optimum conditions, the calibration graphs were linear for Folin,s and TNBS reagents in the range of 10-800 and 3-250 ng mL-1 with detection limit 5.0 and 1.0 ng mL-1, respectively. Average recoveries for spiked samples were determined to be between 95-105%. The proposed method was applied for determination of 2-methylaziridine in water samples.
机译：在本文中，我们开发了一种新颖且强大的方法，采用分散液液微萃取（DLLME）技术对水样中的痕量2甲基氮丙啶进行了浓缩和分光光度法测定。该方法基于2种甲基氮丙啶与两种试剂的衍生化，分别包括Folin试剂（1,2-萘醌-4-磺酸）和2,4,6-三硝基苯磺酸（TNBS），并使用DLLME技术。研究并优化了反应条件，萃取溶剂，分散剂的种类和体积，试剂浓度等重要参数。在最佳条件下，Folin，s和TNBS试剂在10-800和3-250 ng mL-1范围内的校准曲线是线性的，检出限分别为5.0和1.0 ng mL-1。加标样品的平均回收率测定为95-105％。该方法用于水样中2-甲基氮丙啶的测定。

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