Quantitative Analysis of Total Petroleum Hydrocarbons  in Soils: Comparison between Reflectance Spectroscopy and Solvent Extraction by 3 Certified Laboratories

<table>Gromosol with all PHC types.</table>

Applied and Environmental Soil Science

fig7

Figure 7

Figure 7: Quantitative Analysis of Total Petroleum Hydrocarbons  in Soils: Comparison between Reflectance Spectroscopy and Solvent Extraction by 3 Certified Laboratories 

Figure 7 | Quantitative Analysis of Total Petroleum Hydrocarbons  in Soils: Comparison between Reflectance Spectroscopy and Solvent Extraction by 3 Certified Laboratories 