Hey everyone, so I have a few 25 mL samples of water that I would like to test for Sodium (Na+) and Potassium (K+) concentration levels (mg/L). I have done some searching to find out if there are titration techniques to do this and have come up fairly dry for a good quantitative test other than using an atomic absorption instrument. Unfortunately, due to some software update issues, the AA instrument at my university is currently out of commission. Before I look into paying lab fees at another lab I was hoping to find an alternative method.
Any resources or readings you can suggest will help me as well! Thanks for the help in advance!