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本文探索到氨水介质中痕量铁(Ⅲ)催化过氧化氢氧化二甲酚橙褪色的新指示反应,研究了反应的动力学条件,建立了催化光度法测定铁(Ⅲ)的新方法,其灵敏度为4.6×10~(-12)g Fe~(3+)/mL,用于测定人发中的痕量铁(Ⅲ)。
In this paper, a new indication reaction of trace iron (Ⅲ) catalyzing the fading of xylenol orange by hydrogen peroxide in aqueous media was explored. The kinetic conditions of the reaction were studied and a new catalytic spectrophotometric method for the determination of iron (Ⅲ) The sensitivity is 4.6 × 10 ~ (-12) g Fe ~ (3 +) / mL for the determination of trace iron (Ⅲ) in human hair.