Research Article

Elemental Studies of Soil and Food Flour for Risk Assessment of Highway Pollution Using Particle-Induced X-Ray Emission (PIXE) Spectrometry

Figure 3

(a) Frequency distribution of the elemental concentrations of the soil samples (μg/g). (b) Frequency distribution of the elemental concentrations of the soil samples (μg/g).
594598.fig.003a
(a)
594598.fig.003b
(b)