Magnetic porous organic polymers (MPOPs) was synthesized in aqueous phase under mild condition by using Fe₃O₄@SiO₂ nanoparticles as magnetic core, 1,3,5-tris-(4-aminophenyl) benzene (TAPB) and 4-(2-pyridylazo) resorcinol (PAR) as two building blocks. The resultant materials (denoted as TAPB-PAR-MPOPs) have the features of good magnetism, high porosity and large surface area, and fast adsorption kinetic (8 min) as well as high adsorption capacities (319 and 374 mg g⁻¹, respectively) toward lead and mercury ions. With the prepared TAPB-PAR-MPOPs as sorbent, a method of magnetic solid phase extraction coupled with graphite furnace atomic absorption spectrometry was developed for the determination of trace lead and mercury in environmental water samples. Under the optimal conditions, the detection limits were 0.009 and 0.017 μg L⁻¹ for lead and mercury, respectively. The developed method was successfully applied to the analysis of trace lead and mercury in tap water, lake water and river water samples with satisfactory recoveries (88.3–107%), demonstrating a good potential of TAPB-PAR-MPOPs in extraction of trace lead and mercury in environmental waters.

以Fe ₃ O ₄ @SiO ₂纳米粒子为磁芯、1,3,5-三-(4-氨基苯基)苯(TAPB)和4-( 2-pyridyllazo) 间苯二酚 (PAR) 作为两个构件。所得材料（表示为TAPB-PAR-MPOPs）具有良好的磁性、高孔隙率和大比表面积、快速吸附动力学（8 min）和高吸附容量（319和374 mg g ^-1，分别）朝向铅和汞离子。以制备的TAPB-PAR-MPOPs为吸附剂，建立了磁性固相萃取-石墨炉原子吸收光谱法测定环境水样中痕量铅和汞的方法。在最佳条件下，铅和汞的检测限分别为 0.009 和 0.017 μg L ^-1。所开发的方法成功应用于自来水、湖水和河水样品中痕量铅和汞的分析，回收率令人满意（88.3-107%），表明 TAPB-PAR-MPOPs 在提取痕量铅和环境水中的汞。