Special Issues November 2016

November 2016 | Volume 31, Issue 11
Articles
Considering the relatively small number of micronutrients in food and soil and that these nutrients are generally present at high levels, ICP-OES offers an excellent compromise of speed, cost, and simplicity for this analysis. Microwave-assisted digestion allows for a nearly unified sample preparation method across all samples.
In this study, red and white wines were investigated using an ICP-MS method and 14 different elements were quantified simultaneously: arsenic, cadmium, cesium, copper, chromium, vanadium, iron, manganese, nickel, lead, selenium, tin, thallium, and zinc. The developed method is highly accurate, regardless of element concentration.
The accurate determination of protein concentration is a challenge for biopharmaceutical companies when no reference standard is available. This isotope dilution ICP-MS/MS method based on sulfur determination is fast and allows for very accurate determination of a single protein in solution after microwave digestion. The method is tolerant of most matrices used for therapeutic protein formulations and is widely applicable.
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