微波消解-双波长双指示剂动力学光度法测定人发中的痕量铁  

Determination of trace iron in hair by microwave-dual-wavelength and dual-indicator catalytic kinetic spectrophotometry

作　　者：柴红梅[1] 高楼军[1] 高芝[1] 李莹[1] 

机构地区：[1]延安大学化学与化工学院,延安716000

出　　处：《分析试验室》2010年第5期48-50,共3页Chinese Journal of Analysis Laboratory

基　　金：陕西省教育厅专项科研计划(09JK814);延安大学专项基金(YD2008-30)项目资助

摘　　要：研究了微波消解人发的最佳条件,同时研究了在HNO3介质中,痕量铁(Ⅲ)催化H2O2氧化甲基紫和亚甲基蓝褪色的指反应,建立了双波长双指示剂催化动力学光度法测定痕量铁的新方法。方法的线性范围为0.005~0.05μg/mL,检出限为1.02×10-4μg/mL。该方法可用于人发中痕量铁的测定。Hair samples are digested in the sealed container by the microwave digestion system.A new dual-wavelength dual-indicator catalytic kinetic spectrophotometric method for the determination of trace iron(Ⅲ) was studied.The method was based on the iron(Ⅲ) catalyzing the fading reaction of methyl violet and methylene blue by hydrogen peroxide in the HNO3 medium.The linear range of this method was 0.005～0.05 μg/mL,and the detection limit was 1.02×10-4μg/mL.The method has been applied to the determination of iron(...

关 键 词：微波消解 催化光度法 Fe(Ⅲ) 双波长 双指示剂 

分 类 号：R446.1[医药卫生—诊断学]