Exercise 6

A groundwater sample from the Ethiopian Rift Valley has a Ca concentration of 14.1 mg/L, F of 2.62 mg/L at a temperature of 25 °C. Calculate the fluorite saturation index (SI). Use log Kfluorite = –10.6. Use any geochemical code available to you (if you do not have a code available, use the value –0.66 that we obtained using PHREEQC). Is the answer any different comparing the SI with the activity products compared to the concentration products? Why or why not?

Click for solution to Exercise 6


Fluoride in Groundwater Copyright © 2022 by Pauline L. Smedley. All Rights Reserved.