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首页> 外文期刊>Journal of AOAC International >Solid-Phase Extraction of Copper(II) in Water and Food Samples Using Silica Gel Modified with bis(3-Aminopropyl)amine and Determination by Flame Atomic Absorption Spectrometry
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Solid-Phase Extraction of Copper(II) in Water and Food Samples Using Silica Gel Modified with bis(3-Aminopropyl)amine and Determination by Flame Atomic Absorption Spectrometry

机译：双（3-氨基丙基）胺修饰的硅胶固相萃取水和食物中的铜（II），并通过火焰原子吸收光谱法测定

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摘要

A simple and selective separation and preconcentration method was developed for the determination of Cu(II) ions. This method is based on adsorption of Cu(II) ions from aqueous solution on a bis(3-aminopropyl)amine modified silica gel column and flame atomic absorption spectrometric determination after desorption. Various analytical parameters such as pH, type of eluent solution and its volume, flow rate of sample and eluent, and sample volume were optimized. Effects of some cation, anion, and transition metal ions on the recoveries of Cu(II) ions were also investigated. Cu(II) ions were quantitatively recovered at pH 6; 5.0 mL of 2 M HCl was used as the eluent. The preconcentration factor was found to be 150. The LOD was 0.12 mu g/L for Cu(II). The accuracy of the method was confirmed by analysis of Tea Leaves (INCT-TL-1) and Fish Protein (DORM-3) certified reference materials. The optimized method was applied to various water and food samples for the determination of Cu(II)
机译：建立了一种简单，选择性的分离和预富集方法来测定Cu（II）离子。该方法基于双（3-氨基丙基）胺改性硅胶柱上水溶液中Cu（II）离子的吸附和解吸后火焰原子吸收光谱法的测定。优化了各种分析参数，例如pH，洗脱液的类型及其体积，样品和洗脱液的流速以及样品体积。还研究了一些阳离子，阴离子和过渡金属离子对Cu（II）离子回收率的影响。 Cu（II）离子在pH 6时定量回收;使用5.0 mL 2 M HCl作为洗脱液。发现预富集因子为150。Cu（II）的LOD为0.12μg / L。该方法的准确性通过对茶叶（INCT-TL-1）和鱼蛋白（DORM-3）认证的参考材料进行分析而得到证实。优化后的方法应用于各种水和食品样品中的铜（II）的测定

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