title: Chemiluminescence determination of potassium bromate in flour based on flow injection analysis.
abstract: A novel and highly sensitive flow-injection chemiluminescence method for the determination of potassium bromate (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.
authors.affiliation: Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, China.
authors.forename: Zhengyu
authors.initials: Z
authors.lastname: Yan
authors.affiliation: Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, China.
authors.forename: Zhengwei
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, China; Department of Environmental Science, China Pharmaceutical University, Nanjing 210009, China. Electronic address: cjqercarbon@yeah.net.
authors.forename: Jianqiu
authors.initials: J
authors.lastname: Chen
mesh_terms: D001959:Bromates / Q000378:metabolism*; D005433:Flour / Q000032:analysis*; D017022:Flow Injection Analysis / Q000379:methods*; D049449:Luminescence
chemical_list: D001959:Bromates; C019536:potassium bromate
keywords: Chemiluminescence; Flour; Flow-injection; Potassium bromate