Application of modified nano γ-alumina as a solid-phase extraction sorbent combined with high-performance liquid chromatography for determination of phthalate esters in environmental water and soft drink samples
Application of modified nano γ-alumina as a solid-phase extraction sorbent combined with high-performance liquid chromatography for determination of phthalate esters in environmental water and soft drink samples
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DOI：
10.1080/19443994.2013.852138
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发表时间：
2015-01
影响因子：
1.1
通讯作者：
M. Ezoddin;T. Taghizadeh;K. Abdi;M. R. Jamali
中科院分区：
文献类型：
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作者：
M. Ezoddin;T. Taghizadeh;K. Abdi;M. R. Jamali
摘要首次采用十二烷基硫酸钠（SDS）包覆纳米γ-氧化铝固相萃取富集环境水样和饮料中4种邻苯二甲酸酯类化合物，并建立了高效液相色谱-紫外检测器法测定环境水样和饮料中4种邻苯二甲酸酯类化合物。采用阴离子表面活性剂SDS与氧化物矿物表面形成半胶束/吸附胶束体系。采用场发射扫描电镜对纳米γ-氧化铝的性能进行了表征。对影响吸附效果的几个主要因素进行了优化。在优化的条件下，500 mL的样品溶液的预浓缩允许所有分析物的预浓缩因子为500。在0.1-200 μg L−1的浓度范围内实现线性响应。在信噪比为3时，该方法的检测限范围为0.042至0.060 μg L−1。朗缪尔吸附色谱法（Langmuir adsorption...
AbstractA solid-phase extraction procedure based on sodium dodecyl sulfate (SDS)-coated nano γ-alumina was used for the first time as an effective adsorbent for preconcentration of four phthalate esters in environmental water and soft drink samples for their subsequent determination by high-performance liquid chromatography with ultraviolet detection. The system of anionic surfactant SDS with hemimicelles/admicelles formed on the oxide mineral surface was used. Properties of the nano γ-alumina were characterized by field-emission scanning electron microscopy. Several predominant factors affecting the adsorption of phthalate esters were optimized. Under the optimized conditions, preconcentration of 500 mL of the sample solution permitted a preconcentration factor of 500 for all analytes. The linear response was achieved in the concentration range of 0.1–200 μg L−1. Limits of detection of the method obtained at a signal-to-noise ratio of three ranged between 0.042 and 0.060 μg L−1. The Langmuir adsorption c...