Similar charge reversal and near-zero ζ-potential values are recorded in the case of 1 M salt solutions of CaCl 2 and MgCl 2 ( Figure 4 B) , with an almost insignificant difference in the case of 0.1 and 1 M salt solutions of Na 2 SO 4 and NaHCO 3 ( Figure 4 C,D, respectively).
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A Surface Charge Approach to Investigating the Influence of Oil Contacting Clay Minerals on Wettability Alteration.
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