Abbasi Shahryar, Roushani Mahmoud, Khani Hossein, Sahraei Reza, Mansouri Ghobad
Department of Chemistry, Ilam University, Ilam, Iran.
Department of Chemistry, Ilam University, Ilam, Iran.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Apr 5;140:534-43. doi: 10.1016/j.saa.2014.11.107. Epub 2015 Jan 20.
Novel Ni(II) ion-imprinted polymers (Ni-IIP) nanoparticles were prepared by using Ni(II) ion-1,5-diphenyl carbazide (DPC) complex as the template molecule and methacrylic acid, ethylene glycol dimethacrylate (EGDMA) and 2,2'-azobisisobutyronitrile (AIBN) as the functional monomer, cross-linker and the radical initiator, respectively. The synthesized polymer particles were characterized physically and morphologically by using infrared spectroscopy (IR), thermo gravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscopic (SEM) techniques. Some parameters such as pH, weight of the polymer, adsorption time, elution time, eluent type and eluent volume which affects the efficiency of the polymer were studied. The preconcentration factor, relative standard deviation, and limit of detection of the method were found to be 100, 1.9%, and 0.002 μg mL(-1), respectively. The prepared ion-imprinted polymer particles have an increased selectivity toward Ni(II) ions over a range of competing metal ions with the same charge and similar ionic radius. The method was applied to the determination of nickel in tomato and some water samples.
以Ni(II)离子-1,5-二苯基卡巴肼（DPC）配合物为模板分子，甲基丙烯酸、乙二醇二甲基丙烯酸酯（EGDMA）和2,2'-偶氮二异丁腈（AIBN）分别作为功能单体、交联剂和自由基引发剂，制备了新型Ni(II)离子印迹聚合物（Ni-IIP）纳米粒子。采用红外光谱（IR）、热重分析（TGA）、X射线衍射（XRD）和扫描电子显微镜（SEM）技术对合成的聚合物颗粒进行了物理和形态表征。研究了影响聚合物效率的一些参数，如pH值、聚合物重量、吸附时间、洗脱时间、洗脱剂类型和洗脱剂体积。该方法的预富集因子、相对标准偏差和检测限分别为100、1.9%和0.002 μg mL(-1)。制备的离子印迹聚合物颗粒对一系列具有相同电荷和相似离子半径的竞争金属离子对Ni(II)离子具有更高的选择性。该方法应用于番茄和一些水样中镍的测定。
