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Selective extraction and determination of beryllium in real samples using amino-5,8-dihydroxy-1,4-naphthoquinone functionalized magnetic MIL-53 as a novel nanoadsorbent

机译:使用氨基-5,8-二羟基-1,4-萘醌官能化磁MIL-53作为新型纳米造纸剂的真实样品中铍的选择性提取和测定

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摘要

Herein, a magnetic MOF for preconcentration of Be(ii) was synthesized. The material is obtained from magnetite (Fe3O4) nanoparticles that were modified with 2-amino-5,8-dihydroxy-1,4-naphthoquinone (ADHNQ) and then reacted with terephthalic acid and iron(iii) chloride to form a metal-organic framework of the type MIL-53(Fe) capable of extracting Be(ii). The extraction parameters were optimized by employing design of experiments methodology. Beryllium concentration was determined by flame atomic absorption spectrometry (FAAS). The detection limit was as low as 0.07 ng mL(-1)and the quantification limit is 0.2 ng mL(-1). Linearity extends from 0.2 to 100 ng mL(-1), and the precision of the method (intra and inter-day assay) is <9.5%. The recoveries of real sample analysis were in the range of 89-101%. The method was successfully applied to the analysis of various real water samples and an alloy sample.
机译:这里,合成了用于预浓缩的磁性MOF是(II)的。 用2-氨基-5,8-二羟基-1,4-萘醌(ADHNQ)改性的磁铁矿(Fe3O4)纳米颗粒获得该材料,然后与对苯二甲酸和铁(III)氯化物反应以形成金属 - 有机物 能够提取的MIL-53(FE)的框架(II)。 通过使用实验方法的设计进行了优化提取参数。 通过火焰原子吸收光谱法(FAAS)测定铍浓度。 检出限量低至0.07 ng ml(-1),量化极限为0.2ng ml(-1)。 线性度从0.2〜100 ng ml(-1)延伸,方法(内部和白内测定)的精度<9.5%。 实验分析的回收率在89-101%的范围内。 该方法成功地应用于各种真实水样和合金样品的分析。

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  • 来源
    《RSC Advances》 |2020年第60期|共9页
  • 作者单位

    Islamic Azad Univ Dept Chem Cent Tehran Branch Tehran 1467686831 Iran;

    Islamic Azad Univ Dept Chem Cent Tehran Branch Tehran 1467686831 Iran;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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