Magnetic Solid-Phase Extraction Using Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> Magnetic Nanoparticles Followed by UV-Vis Spectrometry for Determination of Paraquat in Plasma and Urine Samples

<div>The adsorption capacity of Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> MNPs.</div>

Journal of Analytical Methods in Chemistry

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Figure 4: Magnetic Solid-Phase Extraction Using Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> Magnetic Nanoparticles Followed by UV-Vis Spectrometry for Determination of Paraquat in Plasma and Urine Samples 

Figure 4 | Magnetic Solid-Phase Extraction Using Fe3O4@SiO2 Magnetic Nanoparticles Followed by UV-Vis Spectrometry for Determination of Paraquat in Plasma and Urine Samples 