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

<table>Intra-/interlaboratory deviation.</table>

Applied and Environmental Soil Science

fig3

Figure 3

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

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