Soil type

relationship

Equation

R²

Ramnicu de Jos soil, biodisel absortion

y = 0.0043x³ – 0.1736x² + 2.7258x − 2E-11

1

Flower soil absortion

y = −0.0011x³ + 0.0376x² + 1.0298x − 6E-12

1

Adsorber absortion

y = −0.0011x³ + 0.0597x² + 0.4603x − 5E-12

1

Ramnicu de Jos soil, disel absortion

y = 0.0873x² + 0.5907x + 4E-14

1