Submicrometric Magnetic Nanoporous Carbons Derived from Metal–Organic Frameworks Enabling Automated Electromagnet-Assisted Online Solid-Phase Extraction
作者： Rejane M Frizzarin , Carlos Palomino Cabello , Maria del Mar Bauzà , Lindomar A Portugal , Fernando Maya
DOI: 10.1021/ACS.ANALCHEM.6B02065
关键词: Nanoporous 、 Chemistry 、 Imidazolate 、 Magnet 、 Solid phase extraction 、 Electromagnet 、 Extraction (chemistry) 、 Inert gas 、 Nanotechnology 、 Nanoparticle
摘要: We present the first application of submicrometric magnetic nanoporous carbons (μMNPCs) as sorbents for automated solid-phase extraction (SPE). Small zeolitic imidazolate framework-67 crystals are obtained at room temperature and directly carbonized under an inert atmosphere to obtain containing cobalt nanoparticles. The μMNPCs have a high contact area, stability, their preparation is simple cost-effective. prepared exploited in microcolumn format sequential injection analysis (SIA) system with online spectrophotometric detection, which includes specially designed three-dimensional (3D)-printed holder automatically actuated electromagnet. combined action permanent magnets electromagnet enabled movement solid bed particles inside microcolumn, preventing aggregation, increasing versatility system, preconcentration...
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