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首页> 外文期刊>RSC Advances >A Zn based metal organic framework nanocomposite: synthesis, characterization and application for preconcentration of cadmium prior to its determination by FAAS
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A Zn based metal organic framework nanocomposite: synthesis, characterization and application for preconcentration of cadmium prior to its determination by FAAS

机译：锌基金属有机骨架纳米复合材料：火焰原子吸收光谱法测定镉前的富集合成，表征及应用

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A new metal–organic framework (MOF) with zinc as the metal ion and benzene-1,3-dicarboxylic acid as organic linker was synthesized via the hydrothermal method and used as a selective nanoadsorbent for the extraction and preconcentration of trace amounts of cadmium via a solid phase extraction method. Also, flame atomic absorption spectrometry was applied for the quantification of extracted Cd ions. The synthesized Zn-MOF nanocomposite was characterized by different techniques such as transmission electron microscopy, scanning electron microscopy, X-ray diffraction spectrometry and Fourier transform infrared spectroscopy. Furthermore, the effects of various factors on the synthesis of the Zn-MOF nanoadsorbent and Cd adsorption process were investigated. Under the optimum conditions, a preconcentration factor of 100, RSD of 2.2% for 80.0 μg L?1 Cd and detection limit of 0.2 μg L?1 were obtained. Finally, the recommended method was applied for the determination of Cd ions in real and standard samples.
机译：通过水热法合成了一种以锌为金属离子，苯-1,3-二羧酸为有机连接基的新型金属有机骨架（MOF），并用作选择性的纳米吸附剂。固相萃取法富集痕量镉同样，火焰原子吸收光谱法用于定量提取的Cd离子。利用透射电子显微镜，扫描电子显微镜，X射线衍射光谱和傅里叶变换红外光谱等不同技术对合成的Zn-MOF纳米复合材料进行了表征。此外，研究了各种因素对Zn-MOF纳米吸附剂的合成和Cd吸附过程的影响。在最佳条件下，80.0μgL ？1 Cd的预浓系数为100，相对标准偏差为2.2％，检出限为0.2μgL ?。获得了1 。最后，将推荐方法用于实际样品和标准样品中Cd离子的测定。

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