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 volume effect of NaOH and ascorbic acid.</div>

Journal of Analytical Methods in Chemistry

fig5

Figure 5

Figure 5: 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 5 | Magnetic Solid-Phase Extraction Using Fe3O4@SiO2 Magnetic Nanoparticles Followed by UV-Vis Spectrometry for Determination of Paraquat in Plasma and Urine Samples 