Add time:07/13/2019 Source:sciencedirect.com
A novel and highly sensitive flow-injection chemiluminescence method for the determination of Potassium bromate (cas 7758-01-2) (KBrO3) has been developed. This method is based on the luminescence properties of the KBrO3–Na2SO3–quinine sulfate system in acid medium. Optimized experimental conditions and a possible mechanism were investigated. The relative chemiluminescence intensity responded linearly to the concentration of KBrO3 in the range of 7.054 × 10−6–1.008 × 10−4 mol/L with a detection limit of 2.116 × 10−6 mol/L. The relative standard deviation (RSD) at 5.0 × 10−5 mol/L KBrO3 (n = 12) was 2.3%. The proposed method was applied successfully to the determination of KBrO3 in flour.
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