Fig. 8

Concentration of alkalis (Na + K) (mmol L−1) versus total cations concentration (mmol L−1) of all samples, CS Ca-SO4 water, CSA = Ca-SO4-alkalis water, CC Ca-CO3 water, CCA Ca-CO3-alkalis water, MC Mg-CO3 water
Concentration of alkalis (Na + K) (mmol L−1) versus total cations concentration (mmol L−1) of all samples, CS Ca-SO4 water, CSA = Ca-SO4-alkalis water, CC Ca-CO3 water, CCA Ca-CO3-alkalis water, MC Mg-CO3 water