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A green metal-organic framework to monitor water contaminants

机译:用于监测水污染物的绿色金属有机框架

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摘要

The CIM-80 material (aluminum(iii)-mesaconate) has been synthetized in high yield through a novel green procedure involving water and urea as co-reactants. The CIM-80 material exhibits good thermal stability with a working range from RT to 350 degrees C with a small contraction upon desolvation. Moreover, this material is stable in water at different pH values (1-10) for at least one week, and shows a LC50 value higher than 2 mg mL(-1). The new material has been tested in a microextraction methodology for the monitoring of up to 22 water pollutants while presenting little environmental impact: only 20 mg of CIM-80 and 500 L of acetonitrile are needed per analysis. The analytical performance of the CIM-80 in the microextraction strategy is similar to or even better for several pollutants than that of MIL-53(Al). The average extraction efficiencies range from approximate to 20% for heavy polycyclic aromatic hydrocarbons to approximate to 70-100% for the lighter ones. In the case of the emerging contaminants, the average extraction efficiency can reach values up to 70% for triclosan and carbamazepine.
机译:通过涉及水和尿素作为共反应物的新型绿色程序合成CIM-80材料(铝(III) - 碘酰酸酯)。 CIM-80材料具有良好的热稳定性,从RT至350℃的工作范围内工作范围,降低在降解时具有小的收缩。此外,该材料在不同pH值(1-10)的水中稳定至少一周,并且显示出高于2mg ml(-1)的LC50值。新材料已经在微萃取方法中进行了测试,用于监测多达22个水污染物,同时呈现很少的环境影响:每分析仅需要20mg CIM-80和500L乙腈。 CIM-80在微萃取策略中的分析性能与几种污染物相似或甚至更好,而不是MIL-53(AL)。平均提取效率范围从大约20%到重质多环芳烃的近似值达到更轻的多环芳烃近似为70-100%。在新出现的污染物的情况下,平均提取效率可达到三胞嘧啶和卡马柳氏素的70%的值。

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  • 来源
    《RSC Advances》 |2018年第55期|共7页
  • 作者单位

    Univ La Laguna Analyt Chem Div Dept Chem Apartado 456 San Cristobal la Laguna 38200 Spain;

    Univ La Laguna Analyt Chem Div Dept Chem Apartado 456 San Cristobal la Laguna 38200 Spain;

    Univ La Laguna Analyt Chem Div Dept Chem Apartado 456 San Cristobal la Laguna 38200 Spain;

    Univ La Laguna Dept Phys Lab Rayos X &

    Mat Mol MATMOL Apartado 456 San Cristobal la Laguna 38200 Spain;

    ALBA Synchrotron Light Source Barcelona 08920 Spain;

    Univ La Laguna Analyt Chem Div Dept Chem Apartado 456 San Cristobal la Laguna 38200 Spain;

    Univ La Laguna Dept Phys Lab Rayos X &

    Mat Mol MATMOL Apartado 456 San Cristobal la Laguna 38200 Spain;

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  • 正文语种 eng
  • 中图分类 化学;
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