Skip to Main Content

The A3 sample was considered a mixture (Table 7) of A1 (surface water of Ají stream, which is identical to A2) and M139 (groundwater from unconfined aquifer).

Table 7

(a) Samples used in the numerical modeling and (b) results of numerical modeling carried out with PHREEQC

(a) SampleEC (μS/cm)pHCO3−2 (mg/L)CO3H(mg/L)SO4= (mg/L)Cl (mg/L)Na+ (mg/L)K+ (mg/L)Ca+ (mg/L)Mg+ (mg/L)δ18O (‰)δ2H (‰)
A1 (IS) 1,212 8.9 26.7 535 1,23.4 51.4 282.1 9.2 20.0 12.7 −4.9 −24.7 
M139 (IS) 7,830 7.9 1,250 1,348 1,214 1,739 40.4 56.0 112.2 −4.7 −27 
A3 (FS) 1,333 8.2 625 88.9 71.4 264.9 10.8 24.0 12.2 −4.5 −23.1 
(b)
SampleMixture fractionNaX (mol/L)CaX2 (mol/L)CaCO3 (mol/L)CaSO4:2H2O (mol/L)
A1 (IS) 0.98 −0.12 0.63 −0.48 −0.45               
M139 (IS) 0.02 −0.02 0.01 −0.03 −0.02               
(a) SampleEC (μS/cm)pHCO3−2 (mg/L)CO3H(mg/L)SO4= (mg/L)Cl (mg/L)Na+ (mg/L)K+ (mg/L)Ca+ (mg/L)Mg+ (mg/L)δ18O (‰)δ2H (‰)
A1 (IS) 1,212 8.9 26.7 535 1,23.4 51.4 282.1 9.2 20.0 12.7 −4.9 −24.7 
M139 (IS) 7,830 7.9 1,250 1,348 1,214 1,739 40.4 56.0 112.2 −4.7 −27 
A3 (FS) 1,333 8.2 625 88.9 71.4 264.9 10.8 24.0 12.2 −4.5 −23.1 
(b)
SampleMixture fractionNaX (mol/L)CaX2 (mol/L)CaCO3 (mol/L)CaSO4:2H2O (mol/L)
A1 (IS) 0.98 −0.12 0.63 −0.48 −0.45               
M139 (IS) 0.02 −0.02 0.01 −0.03 −0.02               

IS: initial solution; FS: final solution.

Close Modal

or Create an Account

Close Modal
Close Modal