Dear Everybody,
I found a good correlation between Magnesium (Mg) and both Bicarbonate Total Alkalinity in the one hand and a poor correlation between Calcium with these latter two.
There is a good correlation Between potassium these two elements (Total Alkalinity and Bicarbonate).
Thank you.
Dear Kouakou,
What is the chemistry of the rock that the groundwater interacts with? If the rock the groundwater interacts contains magnesite than you would expect Mg to correlate with bicarbonate according:
MgCO3 + H2O + CO2 --> Mg2+ + 2HCO3-
Magnesite can also form from the weathering step of serpentine.
2 Mg3Si2O5(OH)4 + 3 CO2 --> Mg3Si4O10(OH)2 + 3 MgCO3 + H2O
Best regards,
Niels
If there is negative correlation between Mg and Bicarbonate then it may point towards different sources for both of them whereas, a positive correlation signifies similar sources for them.
Thank you very much for your answers. The geological formation in the area are: Biotite Gneiss, Upper Birimian, Hornblende biotite granodiorite, Granite, Migmatite and Undifferentiated granite.
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