Optimization of ultrasound-assisted magnetic retrieval-linked ionic liquid dispersive liquid-liquid microextraction for the determination of cadmium and lead in water samples by graphite furnace atomic absorption spectrometry

Wang, Xie; Liu, Haitao; Lin, Chaowen; Pang, Liangyu; Yang, Junwei; Zeng, Qingbin; SCI

机构： Sichuan Acad Agr Sci, Soil & Fertilizer Inst, Chengdu 610066, Sichuan, Peoples R China; Sichuan Tobacco Co, Panzhihua Branch, Panzhihua 617026, Peoples R China;

关键词： Central composite design Fractional factorial design Graphite furnace atomic absorption spectrometry Heavy metals Ionic liquid dispersive liquid-liquid microextraction Magnetic nanoparticles