分析化学2017，Vol.45Issue(3)：397-402,6.DOI:10.11895/j.issn.0253-3820.160784
电致化学发光法测定Mn2+含量的研究
An Electrochemiluminescence Method for Determination of Manganese (Ⅱ)
摘要
Abstract
In the presence of silver ion, Mn2+ could be electro-oxidized to potassium hypermanganate in phosphoric acid solution, which could effectively react with pyrocatechol in acid solution and luminol in sodium hydroxide solution to produce chemiluminescence. On the basis of this, a novel indirect approach for the detection of Mn2+ was established. The effect of silver ions on the electrochemical oxidation of Mn2+was studied. when 1. 5 ×10-5 mol/L Ag+ and 0. 01 mol/L phosphoric acid solution were used in the process of electrochemical oxidation, the CL intensity could be up to the maximum value after the above solution was electrolyzed for 2 min. The relation of CL intensity and Mn2+concentration in the solutions at different pH and the selectivity were also investigated. when the pyrocatechol was used as luminescent reagent in the acidic medium, the CL intensity was linearly to the Mn2+concentration in the range of 1. 82×10-7-7. 27×10-5 mol/L with excellent selectivity. Common ions had little interferences in the determination of Mn2+. The method was successfully applied to the determination of Mn2+ in surface water and drinking water with satisfactory results.关键词
锰(Ⅱ)/电化学氧化/化学发光Key words
Manganese(Ⅱ)/Electrochemical oxidation/Chemiluminescence引用本文复制引用
嵇正平,胡红果,颜丙义,朱广绪,徐琴,胡效亚..电致化学发光法测定Mn2+含量的研究[J].分析化学,2017,45(3):397-402,6.基金项目
本文系国家自然科学基金项目 (Nos. 21575124, 21675140)和江苏省大学生实践创新训练计划(No. 201511117059Y) 资助 This work was supported by the National Natural Science Foundation of China (Nos. 21575124, 21675140) （Nos. 21575124, 21675140）
