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Ion Analyses Applications

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    Analysis of Methylimidazoles in Caramel Colored Carbonated Beverages

    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.

    By MilliporeSigma based in Bellefonte, PENNSYLVANIA (USA).

  • Depth Profile Analysis of Solid State Li-Ion Battery Device by Laser Induced Breakdown Spectroscopy (LIBS)

    This technical note highlights the ability of Laser-induced breakdown spectroscopy (LIBS) to perform depth-profiling analysis of key elements that represent the chemical makeup of important Li-ion battery components. Request this application note at http://appliedspectra.com/applications/application-notes.html

    By Applied Spectra, Inc. based in Fremont, CALIFORNIA (USA).

  • Water quality monitoring systems for high water purifier industry

    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.

    By SWAN Analytische Instrumente AG based in Hinwil, SWITZERLAND.

  • Laboratory Ion Analyses

    Our single ion and multi ion kits allow for real-time laboratory analysis of one to six ions simultaneously with one probe. These ion sensors along with the reference electrode are solid state which allows for easy handling, storage and maintenance. No filling solutions nor buffers are required. The sensors are based on carbon nanotube technology allowing for reliable and reproducible measurement of ions in liquids.

    By CleanGrow based in Blackpool, IRELAND.

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