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This document describes a method for determining total sulfite in foods and beverages using flow injection analysis. Key steps include: 1. Test solutions are reacted with sodium hydroxide to liberate sulfite, then acidified to produce SO2 gas which reacts with malachite green, discoloring it. The degree of discoloration is proportional to sulfite amount. 2. Test solutions and standards are injected into the flow injection system and peak heights measured. 3. Peak heights are used to construct a calibra

Author

Paula Catalina Marín Uribe

Language

EN