Determination of Ascorbic Acid Using a New Oscillating Chemical System of Lactic Acid‐Acetone‐BrO3−‐Mn2+‐H2SO4

Shu‐Tao Yang, Zhi‐Xin Lin, Ru‐Xiu Cai, Nan‐Qin Gan

doi:10.1002/cjoc.20020201018

Determination of Ascorbic Acid Using a New Oscillating Chemical System of Lactic Acid‐Acetone‐BrO3−‐Mn2+‐H2SO4

説明

<jats:title>Abstract</jats:title><jats:p>Analyte pulse perturbation (APP) technique was applied to the study of the perturbation of ascorbic add (AA) on the lactic add‐acetone‐BrO<jats:sub>3</jats:sub><jats:sup>−</jats:sup>‐Mn<jats:sup>2+</jats:sup>‐H<jats:sub>2</jats:sub>SO4 oscillating reaction, and AA was determined using this new oscillating chemical system. Influence of experimental variables was investigated. The linear range lies between 5.0 × 10<jats:sup>−7</jats:sup>‐5.5 × 10<jats:sup>−s</jats:sup> mol/L, and the precision and throughput were quite good (2.43% as RSD, and 8–10 samples/h, respectively). This method was applied to the determination of real samples and the results were satisfactory. Some aspects of the potential mechanism of action of AA on the oscillating systems are discussed.</jats:p>