用于ICP-MS检测前从水和食品样品中微量提取砷(III)的针状球形铜金属有机框架的制备

IF 2.5 4区 综合性期刊 Q2 CHEMISTRY, MULTIDISCIPLINARY Applied Sciences-Basel Pub Date : 2023-09-06 DOI:10.3390/app131810036
M. Habila, Z. Alothman, Mohamed Sheikh, Saleh O. Alaswad
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引用次数: 0

摘要

通过SEM、TEM、EDS、XRD、FTIR和BET表面积制备并表征了类自旋球形铜金属-有机框架(SSC MOFs)。将制备的SSC MOFs用于开发微量砷(III)的微萃取预富集程序。结果表明,铜和咪唑衍生的金属-有机骨架形成在一个具有多刺表面和120.7m2/g表面积的球体中。TEM证实了在室温下制备的SSC MOFs的穿孔网络结构。发现表面官能团含有NH和C=N基团。XRD分析证实了所制备的SSC MOFs的晶体结构。应用微萃取法对砷(Ⅲ)进行预富集,效果显著。回收砷(III)的最佳条件是pH为7,样品体积高达40 mL。所开发的SSC MOF衍生微萃取工艺的LOD为0.554µg·L−1,LOQ为1.66µg·L−10。所开发的SSC MOF衍生微萃取工艺用于从包括食品和水在内的真实样品中准确预富集砷(III),具有预期的性能效率。
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Fabrication of Spiny-like Spherical Copper Metal–Organic Frameworks for the Microextraction of Arsenic(III) from Water and Food Samples before ICP-MS Detection
Spiny-like spherical copper metal–organic frameworks (SSC-MOFs) were prepared and characterized via SEM, TEM, EDS, XRD, FTIR and the BET surface area. The fabricated SSC-MOFs were applied to develop a procedure for the microextraction of trace arsenic(III) for preconcentration. The results show that a copper- and imidazole-derived metal–organic framework was formed in a sphere with a spiny surface and a surface area of 120.7 m2/g. The TEM confirmed the perforated network structures of the SSC-MOFs, which were prepared at room temperature. The surface functional groups were found to contain NH and C=N groups. The XRD analysis confirmed the crystalline structure of the prepared SSC-MOFs. The application for the process of microextracting the arsenic(III) for preconcentration was achieved with superior efficiency. The optimum conditions for the recovery of the arsenic(III) were a pH of 7 and the use of a sample volume up to 40 mL. The developed SSC-MOF-derived microextraction process has an LOD of 0.554 µg·L−1 and an LOQ of 1.66 µg·L−10. The developed SSC-MOF-derived microextraction process was applied for the accurate preconcentration of arsenic(III) from real samples, including food and water, with the promised performance efficiency.
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来源期刊
Applied Sciences-Basel
Applied Sciences-Basel CHEMISTRY, MULTIDISCIPLINARYMATERIALS SCIE-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
5.30
自引率
11.10%
发文量
10882
期刊介绍: Applied Sciences (ISSN 2076-3417) provides an advanced forum on all aspects of applied natural sciences. It publishes reviews, research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation or experimental procedure, if unable to be published in a normal way, can be deposited as supplementary electronic material.
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