流动注射催化光度法测定微量Sb(Ⅲ)  

The determination of trace antimony by flow injection catalytic spectrophotometry

作　　者：高芝[1] 高楼军[1] 柴红梅[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8期116-119,共4页Chinese Journal of Analysis Laboratory

摘　　要：基于在B-R缓冲溶液介质中,Sb(Ⅲ)对H2O2氧化孔雀石绿褪色反应具有催化作用,建立了流动注射催化动力学光度法测定微量元素Sb(Ⅲ)的新分析方法,该方法的线性范围为0.010～2.0μg/mL,检出限为7.8×10-3μg/mL,r=0.9996。对0.1μg/mL Sb(Ⅲ)测定的RSD=0.97%n=11,进样频率为22.8次/h。用于环境水样中微量Sb(Ⅲ)的测定,回收率为97.3%～97.7%。A new flow-injection-inhibition discoloring spectrophotometric method using stopped-flow technique for determination of trace antimony(Ⅲ) is described.This method is based on the catalytic effect of antimony(Ⅲ) on the reaction of malachite green and hydrogen peroxide in the medium of Britton-Robinson buffer solution.The linear range of the determination is 0.01～2.0 μg/mL for antimony(Ⅲ) with a correlation coefficient of 0.9996,and the detection limit is 7.8×10-3 μg/mL with the sampling rate of 22.8 times pe...

关 键 词：反相流动注射 催化光度法 孔雀石绿 Sb(Ⅲ) 

分 类 号：O614.531[理学—无机化学]