College of Science, Hebei Agricultural University, Baoding, 071001, Hebei, China.
College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, Hebei, China.
J Chromatogr A. 2019 Sep 27;1602:178-187. doi: 10.1016/j.chroma.2019.06.046. Epub 2019 Jul 4.
A magnetic porous covalent triazine-based organic polymer (M-PCTP) was synthesized by co-precipitation method. The M-PCTP combined both the properties of the PCTP and the magnetism of FeO nanoparticles, possessing highly porous structure and good magnetism. It was used as a magnetic solid phase extraction (MSPE) adsorbent to extract carbamate pesticides (propoxur, carbaryl, isoprocarb, fenobcarb and diethofencarb) from lemonade and grape juice samples prior to high performance liquid chromatography-mass spectrometric detection. Under the optimal conditions, a good linearity for the real samples was received in the range from 0.10-0.90 to 80.00 ng mL with the correlation coefficients of 0.9882-0.9983. The method recoveries for the five carbamates were 86.3-108.0%. The limits of detection were 0.02-0.20 ng mL for lemonade sample, and 0.04-0.30 ng mL for grape juice sample. The M-PCTP also demonstrated good extraction capabilities for other different kinds of organic compounds including chlorophenols and polycyclic aromatic hydrocarbons.
通过共沉淀法合成了一种磁性多孔共价三嗪基有机聚合物（M-PCTP）。M-PCTP 结合了 PCTP 的性质和 FeO 纳米粒子的磁性，具有高度多孔的结构和良好的磁性。它被用作磁固相萃取（MSPE）吸附剂，用于从柠檬汁和葡萄汁样品中提取氨基甲酸酯类农药（丙硫磷、西维因、异丙威、苯丁锡和乙硫苯威），然后进行高效液相色谱-质谱检测。在最佳条件下，从 0.10-0.90 到 80.00ng/mL 的范围内，实际样品的线性良好，相关系数为 0.9882-0.9983。五种氨基甲酸酯的回收率为 86.3-108.0%。对于柠檬汁样品，检出限为 0.02-0.20ng/mL，对于葡萄汁样品，检出限为 0.04-0.30ng/mL。M-PCTP 还表现出对其他不同种类的有机化合物（包括氯酚和多环芳烃）的良好萃取能力。
