分析化学2001，Vol.29Issue(3)：267-270,4.
在线电生强氧化剂钴(Ⅲ)化学发光法测定地塞米松磷酸钠
Flow Injection Chemiluminescence Determination of Sodium Phosphate Dexamethasone Using On-line Electrogenerated Cobalt (Ⅲ) as Oxidant
摘要
Abstract
A chemiluminescence(CL) flow system for the determination of sodium phosphate dexamethasone is described. It is based on the direct CL reaction of sodium phosphate dexamethasone and Co(Ⅲ) in sulfuric acid medium. The unstable Co(Ⅲ) was on-line electrogenerated by constant current electrolysis. The CL intensity was linear with sodium phosphate dexamethasone concentration in the range of 1～20 mg/L. The determination limit was 3.2×10-7 g/mL (DL=3S/r). The whole process could be completed in 1 min with a relative standard deviation of less than 5%. The proposed method is suitable for automatic and continuous analysis and has been applied successfully to the determination of sodium phosphate dexamethasone in pharmaceutical preparation.关键词
流动注射/化学发光/地塞米松磷酸钠/在线电生三价钴分类
化学化工引用本文复制引用
吴蔓莉,李保新,章竹君..在线电生强氧化剂钴(Ⅲ)化学发光法测定地塞米松磷酸钠[J].分析化学,2001,29(3):267-270,4.基金项目
本文系国家自然科学基金资助课题 （）
