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      2. 納米熒光碳點的分子印跡聚合物制備及對農藥殘留的快速檢測
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        華中農業大學理學院

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        國家科技攻關計劃


        Preparation of molecular imprinted polymers for nanometer fluorescent carbon points and rapid detection of pesticide residues
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        Fund Project:

        The National Key Technologies R&D Program of China

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          摘要:

          首先采用“微波法”一步合成水溶性的納米熒光碳點,然后以正硅酸四乙酯(TEOS)為交聯劑,苯醚甲環唑為模板分子,二氧化硅為基體,采用“溶膠—凝膠”法將其接枝在碳點的表面。當清洗掉模板分子后,得到了一種在農藥殘留痕量檢測方面具有較好應用前景的聚合物C-dot@MIP。通過3σ/K計算的最低檢出限為0.93 μg/mL??瞻准訕撕蜆悠芳訕说幕厥章势罹凇?5%以內。

          Abstract:

          Water-soluble nanometer fluorescent carbon points were synthesized in one step by "microwave method", then the silicon dioxide was grafted on the surface of carbon points by “sol-gel” method through tetraethyl orthosilicate (TEOS) as the cross-linking agent and phenyl ether methyl cycloazole as the template molecule. The polymer C-dot@MIP with good application prospects in trace detection of pesticide residues was obtained after the template molecules were washed off. Experimental results showed that the minimum detection limit calculated by 3σ/K was 0.93 μg/mL, and the recoveries of blank and standard spiking sample were not exceeding 25 percent.

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        • 收稿日期:2020-01-04
        • 最后修改日期:2020-09-19
        • 錄用日期:2020-09-19
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