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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.
In this paper, tin (Ⅱ) catalyzed the fading reaction between H_2O_3, KIO_3 and neutral red in sulfuric acid medium. The kinetic conditions of the reaction were studied and a new catalytic spectrophotometric method for the determination of trace tin (Ⅱ) was established. The sensitivity is 4.4 × 10 ~ (-12) gSn ~ (2 +) / mL.