Table 4 Quantitative model of cation release rates for the two groups of rock.

From: Acidic condition accelerates cation release from purple rock in Southwestern China

Rock groups

Regression equations

Correlation coefficients (\({R}^{2}\))

Partial correlation coefficients (\({R}_{{c}_{({H}^{+})}}^{2}\),\({R}_{T}^{2}\))

p

J2s

\({v}_{T}={e}^{0.61\cdot {c}_{({H}^{+})}}\cdot {(\frac{3853.10}{RT})}^{-14.02}\)

0.883

0.767

0.116

< 0.001

J3p

\({v}_{T}={e}^{0.56\cdot {c}_{({H}^{+})}}\cdot {(\frac{5472.96}{RT})}^{-7.34}\)

0.942

0.897

0.045

< 0.001