I have run into a similar but expanded version of this problem. I calculated the bicarbonate from the measured alkalinity and mixed the samples, which resulted in a mixed sample containing bicarbonate; however, when I try to produce Piper or Stiff diagrams for the new mixed sample, the diagrams display the sample with zero bicarbonate/carbonate content. Similarly, I have not been able to back calculate the alkalinity for the mixed sample. After the calculation, the alkalinity cell is still empty but changes to the blue color for calculated cells. Could you provide me with some insight for this?
Thanks, TanyaNHPC water chem 2b.gss
