HPLC Columns Applications in Brazil
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Increased Pigment Removal with Analysis of Pesticides in Oranges
An application was developed to demonstrate increased pigment removal for the analysis of pesticides, using Supel™ QuE Z-Sep/C18 QuEChERS and an Ascentis® Express C18 HPLC Column. The improved cleanup can decrease column and instrument fouling, leading to extended LC column lifetime and reduced instrument ...
By Sigma-Aldrich Office in Sao Paulo, BRAZIL.
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Determination of Additives in Beverages using Ascentis Express Columns
Beverages, such as sodas and energy drinks, can include a number of polar ingredients, which are easily soluble in the water matrix of the drinks. These ingredients include sweeteners (sugars and sugar substitutes), caffeine, vitamin supplements, amino acids, organic acids, and plant extracts. Because the analytes are already in solution, there is no need for extensive sample preparation. Dilution followed by direct injection into an HPLC is typically suitable. In this article we present two beverage ...
By Sigma-Aldrich Office in Sao Paulo, BRAZIL.
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