Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Public Health, Hebei University, Baoding, 071002, China.
Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Public Health, Hebei University, Baoding, 071002, China.
J Chromatogr A. 2020 Jul 19;1623:461192. doi: 10.1016/j.chroma.2020.461192. Epub 2020 May 5.
An imidazolium ionic-liquid-modified phenolic resin (ILPR) was synthesized using 3-aminophenol as a functional monomer, glyoxylic acid as a green cross-linker, and polyethylene glycol 6000 as a porogen. The obtained ILPR showed better extraction of benzoylurea plant hormones thidiazuron and forchlorfenuron than the unmodified phenolic resin because the imidazolium IL provides more interaction modes with the analytes. ILPR, as a tailored adsorbent for solid-phase extraction, was coupled with high-performance liquid chromatography (ILPR‒SPE‒HPLC) for the simultaneous determination of thidiazuron and forchlorfenuron in cucumbers. Good linearity of the ILPR‒SPE‒HPLC method was obtained, ranging from 0.0100 to 5.00 μg g with a correlation coefficient (r) ≥ 0.9999. The recoveries of spiked samples ranged from 91.4% to 100.7% with a relative standard deviation of ≤ 6.0%.
采用 3-氨基酚作为功能单体、乙醛酸作为绿色交联剂、聚乙二醇 6000 作为致孔剂，合成了一种咪唑鎓离子液体改性酚醛树脂（ILPR）。与未改性酚醛树脂相比，所得的 ILPR 对苯甲酰脲植物激素噻二唑隆和氯氟脲的萃取效果更好，因为咪唑鎓离子液体提供了更多与分析物相互作用的模式。ILPR 作为一种定制的固相萃取吸附剂，与高效液相色谱法（ILPR-SPE-HPLC）联用，用于同时测定黄瓜中的噻二唑隆和氯氟脲。ILPR-SPE-HPLC 法具有良好的线性关系，范围为 0.0100 至 5.00μg g，相关系数（r）≥0.9999。加标样品的回收率在 91.4%至 100.7%之间，相对标准偏差（RSD）≤6.0%。
