Analysis of Potassium and Sodium Bicarbonates and Citric Acid Effervescent Tablets for Oral Solution According to USP-NF Method (YK-421)

The monograph below became official on February 1, 2022.

According to the United States Pharmacopeia and the National Formulary Pharmacopeial Forum (PF 45(5)*), sodium bicarbonate and potassium bicarbonate assay of the potassium bicarbonate and potassium chloride effervescent tablets for oral solution should be carried out with an ion chromatography and a column filled with L76 packing material, and meets following requirements. The use of a cation column, IC YK-421, confirmed the requirements were met.

 

System suitability requirements Resolution of sodium and ammonium ions (in system suitability solution): ≥ 2.0
Tailing factor of potassium and sodium ions (in standard solution): ≤ 2.0%
Relative standard deviation (RSD): ≤ 2.0%


*The version at the time of the application acquisition.

Sample: 20 μL
(System suitability solution) 30 µg/mL each of Sodium bicarbonate and Ammonium chloride in H2O

  1.  
Chromatogram of indigestible dextrin

Sample: 20 μL
(Standard solution) 10 µg/mL of Potassium bicarbonate and 30 µg/mL of Sodium bicarbonate in H2O

  1.  
Chromatogram of indigestible dextrin
Column
Shodex IC YK-421 (4.6 mm I.D. x 125 mm)
Eluent
4 mM Nitric acid aq.
Flow rate
0.9 mL/min
Detector
Non-suppressed conductivity
Column temp.
30 ℃

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