Iodine in a pharmaceutical product using Combustion Ion Chromatography with Inline Matrix Elimination

The iodine content in numerous iodized X-ray contrast media (ICM) is around 50% and is determined with great accuracy using Combustion Ion Chromatography. Large quantities of H₂O₂ (1,000 mg/L) are required for complete absorption of the iodine. Similarly, the concentration of the internal standard should be 50 mg/L. The water content of the X-ray contrast media is determined by means of Metrohm's Karl Fischer oven method and incorporated in the final calculation.

Keyword: pyrohydrolysis

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