Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions | Oil & Gas Science and Technology

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Table 1A

Impact of the database used for calculations of the H₂O – CO₂ – CaCO₃ system equilibrium in saline (100 g/L NaCl) conditions

Experiment ID	Minteq.v4.dat	Pitzer.dat	Minteq.v4.dat – pitzer.dat
	Ca(II)eq (mol/L)	Ca(II)eq (mol/L)	Delta Ca(II) (mol/L)	% (relative to pitzer.dat)
4	1.15 × 10⁻³	1.43 × 10⁻³	−2.81 × 10⁻⁴	−19.68
5	1.23 × 10⁻³	1.49 × 10⁻³	−2.63 × 10⁻⁴	−17.66
6	1.27 × 10⁻³	1.52 × 10⁻³	−2.53 × 10⁻⁴	−16.60
10	1.42 × 10⁻³	1.63 × 10⁻³	−2.16 × 10⁻⁴	−13.23
11	1.48 × 10⁻³	1.68 × 10⁻³	−1.99 × 10⁻⁴	−11.84
12	1.57 × 10⁻³	1.75 × 10⁻³	−1.75 × 10⁻⁴	−10.02
16	1.15 × 10⁻³	1.43 × 10⁻³	−2.81 × 10⁻⁴	−19.68
17	1.23 × 10⁻³	1.49 × 10⁻³	−2.63 × 10⁻⁴	−17.66
18	1.19 × 10⁻³	1.46 × 10⁻³	−2.71 × 10⁻⁴	−18.55
22	1.51 × 10⁻³	1.70 × 10⁻³	−1.93 × 10⁻⁴	−11.34
23	1.69 × 10⁻³	1.83 × 10⁻³	−1.45 × 10⁻⁴	−7.92
24	1.67 × 10⁻³	1.82 × 10⁻³	−1.49 × 10⁻⁴	−8.18

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