摘要
在邻苯二甲酸氢钾-盐酸缓冲介质中,以1,10-邻菲哕啉为活化剂,痕量铜(Ⅱ)能灵敏催化抗坏血酸还原偶氮胂Ⅲ褪色的反应,以此建立了测定痕量铜(Ⅱ)的新方法。方法的线性范围为0～100ng·(25mL)^(-1),检测限为2．81×10^(-10)g·mL^(-1)。直接用于人发中铜的测定,结果满意。
A new catalytic kinetic spectrophotometric method has been describles for determination of trace copper based on reductive arsenazo m wire ascorbic acid in an acid medium and 1,10 - phenanthroline as an activator. The linear range is 0 -100ng·（25mL）^-1 .The limit of detection（LOD） of Cu（ Ⅱ ） is 2.81 × 10^10·g·mL^-1 .The method has been applied to the determination of trace copper in human hair with satisfactory results.
出处
《化学工程师》
CAS
2006年第9期36-37,共2页
Chemical Engineer
关键词
催化动力学光度法
铜
偶氮胂Ⅲ
catalytic kinetic spectrophotometry
copper
arsenazoⅢ
