Research Article
Determination of Organochlorine Pesticides in Green Leafy Vegetable Samples via Fe3O4 Magnetic Nanoparticles Modified QuEChERS Integrated to Dispersive Liquid-Liquid Microextraction Coupled with Gas Chromatography-Mass Spectrometry
Figure 2
Different amounts of black carbon removal effect: 0 mg (a), 10 mg (b), 20 mg (c), 40 mg (d), and 60 mg (e).