期刊论文

Catalytic Spectrophotometry for Determination of Trace Iron by Oxidizing O-methoxyphnol with Ammonium Persulfate

中文

南华大学学报(自然科学版)

1673-0062

2004

18

4

114-116

10.19431/j.cnki.1673-0062.2004.04.027

本校为第一机构

基于Fe^3+对过硫酸铵氧化邻甲氧基酚显色的催化效应，建立了一种催化光度法测定水中痕量Fe^3+的新体系，该方法具有良好的选择性，Fe^3+浓度在0．002—0．6μg/25mL范围内与体系的显色效应呈良好线性关系，方法检出限为7．52×10^-10g／mL，应用于几种环境水样中Fe^3+的含量测定，RSD为4．85％，样品加标回收率为98．1％～106．1％。

A new catalytic spectrophotometry for determination of trace iron was estblished.The method was based on the catalysis of trace iron to oxidize O-methoxyhnol with ammonium persulfate in H2SO4 medium.The linear range for Fe are 0.002～0.6 μg/25 mL,and the detection limit are 7.25×10~(-10) g/mL.The recoveries for water samples are from 98.1% to 106.1%,and RSD are less than 4.85%.This method has been applied to the determination ...