Green Synthesis of Iron Nanoparticles: Application on the Removal of Petroleum Oil from Contaminated Water and Soils

Figure 5

Chromatograms of THPs derivatives in water before and after treatment with vZVI: (a) initial concentration = 9.32 ppm, (b) final concentration = 1.31 ppm, (c) initial concentration = 94.20 ppm, and (d) final concentration = 26.80 ppm.

(a)

(b)

(c)

(d)