Simultaneous Determination of Micro-Amounts of Acid Orange and Acid Red in Food by Single Sweep Polarography

Abstract

Abstract: A method for the determination of acid orangeⅡand acid redGR simultaneously in a supporting solution of 0.01mol/ L by single sweep polarography has been established. The peak potentials were -0.74V, -0.89V(vs.SCE) respectively .The peak hights were linearly proportional to the concentration of acid orangeⅡin the range of in the range of 0.20～10.0μg/ml and of acid redGR 0.20～6.0μg/ml. The detection limit was 0.10 μg/ml for both OrangeⅡand redGR . This method was simple and sensitive with good selectivity. The results were satisfactory when used to analyse food.

Key words: single sweep polarography, food, acid orange, acid Red

CHEN Wen, WANG Zheng-Meng, WU Xiao-Rong, WANG Hong. Simultaneous Determination of Micro-Amounts of Acid Orange and Acid Red in Food by Single Sweep Polarography[J]. FOOD SCIENCE, 2005, 26(6): 210-212.

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Simultaneous Determination of Micro-Amounts of Acid Orange and Acid Red in Food by Single Sweep Polarography

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