Analysis of food samples by means of ion chromatography

Analysis of food samples by means of ion chromatography

This Metrohm article describes the fully automated ion chromatography determination of chloride, phosphate and sulfate in an ultraheat-treated (UHT) milk sample and baby milk powder dissolved in water by means of the 881 Compact IC pro ion chromatograph and the upstream Metrohm dialysis cell.

If a difficult food sample such as dairy products is run on an ion chromatograph (IC), there is a big chance that the column will be irretrievably wrecked. Of course, to avoid this a lot of time can be spent on tedious sample preparation steps to eliminate undesirable matrix components.

Another option is to go for an automated compact stopped-flow dialysis system that provides optimum separation while protecting the column from detrimental compounds.

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