摘要
本文发现了硫酸介质中,锡(Ⅱ)催化H_2O_3、KIO_3与中性红之间的褪色反应。研究了反应的动力学条件,建立了催化褪色光度法测定痕量锡(Ⅱ)的新方法。灵敏度为4.4×10^(-12)gSn^(2+)/mL.
Sn (Ⅱ) in H_2SO_4 can catalyze the decolorizing reaction which resultsfrom the oxidation of neutral red by H_2O_2 and KIO_3. The optimuon condi-tions that influence the rate of catalytic decoloring reaction, and a new methodof determing trace element Sn (Ⅱ) with high-selectivity is set up. The sens-itivity of the method is 4.4×10^(-12)/mL.
关键词
锡
测定
分光光度法
催化褪色
catalytic decolorization
spectrophotometry
reaction rate
neutral red
stannous
