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Sodium and Potassium concentration testing

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water_testing_account:
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!

chenbeier:
Alcaline Elements are difficult, maybe Iconic chromatography could work.

wildfyr:
He means ionic chromatography, IC. It's basically the same issue, you really need an instrument.

water_testing_account:
Yeah I see, this is about what I had figured. It's only a minor problem though, I can use another lab if I have too. Thanks for the help still.

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