Jose... Analytical methods are specific for ions and organic compounds and necessitate the use of standard materials for calibration. Quantitation depends on the concentration of the component to decide which technique is more applicable. HPLC is bet used to quantify organic compounds. Ion chromatography is another version of HPLC modified to detect and separate inorganic cations and anions but not compounds, i. e., both NaCl and NaHCO3 will give Na signals. Also it gives Cl signal for both NaCl and KCl. IR has poor applications in aqueous solution. I suggest the use of flame photometry to determine Na and K, Titrimetry to determine Cl and HCO3. Conductivity is non-specific method and gives measurements for total ionic content of a solution. Thus it is not useful for your case. Regards
If you have only these three ingredients, you can measure HCO3- level via titration. Then it can calculate Na level accounts for NaHCO3. Na+ and K+ levels can measure using Flame Photometric method. You can deduct the Na level estimated for NaHCO3 from total Na level and calculate NaCl level. There are few other routes too.
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