Ion Analyses Applications

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  • Category: Monitoring & Testing ×

  • Subcategory: Ion Analyses ×

Metering of Solids

by ProMinent Group - ProMinent GmbH     based in Heidelberg, GERMANY

If you need to meter powder and granulates with accuracy, ProMinent systems are the right choice. They always store, transport and process solids reliably and precisely thanks to our exacting quality requirements.

Water quality monitoring systems for high water purifier industry

by SWAN Analytische Instrumente AG     based in Hinwil, SWITZERLAND

The monitoring of “Ultra Pure Water” or “High Purity Water” requires the lowest possible detection limits for process analyzers. Resistivity is often around 18 MΩ. Dedicated instruments can detect infinitely small amounts (ppt e.g. parts per trillion) of ions.

Analysis of Methylimidazoles in Caramel Colored Carbonated Beverages

by Sigma-Aldrich Co., LLC     based in Bellefonte, PENNSYLVANIA (USA)

Caramel colorings are used as additives in a broad range of food and beverage products to impart a desired color, but have no nutritional or preservative function. Recently, the potential hazard to humans of ammonia- and ammonia-sulfite-process caramel colorings was raised, because they contain the by-product 4-methylimidazole, which is a potential carcinogen.1 The methylimidazole compounds are difficult to analyze due to their polar nature and low molecular weight. Traditional reversed phase techniques are unsuccessful in retaining these small polar compounds. Therefore, most HPLC methods utilize ion-exchange resins for analysis. Another common method involves GC analysis after the analytes first undergo a derivatization step. The purpose of the work shown in this article was to develop a simple and fast analytical method to determine the levels of 2-methylimidazole and 4-methylimidazole in caramel colored carbonated beverages.

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