How to do ICP-MS and ICP-AES of solution having pH > 7 ?

10 November 2022 1 8K Report

I want to do ICP-MS and ICP-AES of the solution having pH >7. The alkalinity of the solution by Na and K hydroxides.

There is no specific reason you can't analyse alkaline/basic solutions, for example tetramethyl ammonium hydroxide (TMAH) is used for blood and milk analysis, BUT you have to be sure you have:

calibrated the instrument with a similar matrix to the samples (0.1% TMAH for example)
complete dissolution of your samples (no precipitates)
diluted to a realistic concentration for analysis (

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