m/V also 3.51g/L
original equation in the study: »XO<1-> + SrNO3<1+> = »XOSrNO3 with log K = 7.90 ± 1.05 (»XO<1-> + H<1+> = »XOH with log K = 9.81 ± 0.11; Sr<2+> + NO3<1-> = SrNO3<1+> with log K = 0.60 (Falck, W. E., Read, D., & Thomas, J. B. (1996). Chemval 2: thermodynamic database. EUR(Luxembourg).(from ThermoChimie)))
combination of surface complexation and ion exchange model