A highly efficient and selective method based on core–shell molecularly imprinted polymers (MIL@MIP) and high performance liquid chromatography (HPLC) was developed and firstly used for the trace analysis of tribenuron-methyl (TBM) in complicated matrices. The MIL@MIP was prepared by surface molecular-imprinting technique, specially using MIL-101 as core, TBM as template molecule, methacrylic acid (MAA) as functional monomer, ethylene glycol dimethacrylate (EGDMA) as cross-linker, and azobisisobutyronitrile (AIBN) as initiator. The resulting MIL@MIP showed high affinity, recognition specificity, fast mass transfer rate, and efficient adsorption performance towards TBM with the adsorption capacity reaching up to 3.217 mg/g. It also showed high cross-selectivity for TBM among its six kinds of chemical structure analogues. Furthermore, using the MIL@MIP as solid-phase extraction (SPE) materials, the recoveries of TBM determined by HPLC were 84.6-92.3%, 93.3-106.7%, and 88.9-93.3% in the spiked river water, soil, and soybean samples, respectively, with the limit of detection of 0.3 ng/L, 1.5 ng/kg, and 1.5 ng/kg, accordingly. It was proved that the developed HPLC-MISPE method was fast, accurate, and sensitive for detecting the trace TBM in river water, soil, and soybean samples.

中文翻译：

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新型金属有机骨架复合材料MIL-101（Cr）@MIP，作为固相萃取与HPLC联苯磺隆-甲基测定中的高效吸收剂。

建立了一种基于核-壳分子印迹聚合物（MIL @ MIP）和高效液相色谱（HPLC）的高效，选择性方法，该方法首先用于复杂基质中的苯磺隆甲基（TBM）的痕量分析。MIL @ MIP是通过表面分子印迹技术制备的，特别是以MIL-101为核心，TBM为模板分子，甲基丙烯酸（MAA）作为功能单体，乙二醇二甲基丙烯酸酯（EGDMA）作为交联剂，偶氮二异丁腈（AIBN） ）作为发起者。所得的MIL @ MIP显示出高亲和力，识别特异性，快速的传质速率和对TBM的有效吸附性能，吸附容量高达3.217 mg / g。在六种化学结构类似物中，它对TBM的交叉选择性也很高。此外，使用MIL @ MIP作为固相萃取（SPE）材料，通过HPLC测定的加标河水，土壤和大豆样品中的TBM回收率分别为84.6-92.3％，93.3-106.7％和88.9-93.3％，检出限分别为0.3 ng / L，1.5 ng / kg和1.5 ng / kg。实践证明，所开发的HPLC-MISPE方法快速，准确，灵敏，可用于检测河水，土壤和大豆样品中的痕量TBM。