Flow injection spectrophotometric system for hydrogen peroxide monitoring in photo-Fenton degradation processes.

被引：64

作者：

Oliveira, MC ^{[1
]}

Nogueira, RFP

Neto, JAG

Jardim, WF

Rohwedder, JJR

机构：

[1] UNESP, Inst Quim, Dept Quim Analit, CP 355, BR-14801970 Araraquara, SP, Brazil

[2] Univ Estadual Campinas, Inst Quim, Dept Quim Analit, CP 6154, BR-13081970 Campinas, SP, Brazil

来源：

QUIMICA NOVA | 2001年 / 24卷 / 02期

关键词：

hydrogen peroxide; flow injection analysis; foto-Fenton;

D O I：

10.1590/S0100-40422001000200007

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A flow injection spectrophotometric system was projected for monitoring hydrogen peroxide during photodegradation of organic contaminants in photo-Fenton processes (Fe2+/H2O2/UV). Sample is injected manually in a carrier stream and then receives by confluence a 0.1 mel L-1 NH4VO3 solution in 0.5 mel L-1 H2SO4 medium. The produce formed shows absorption at 446 nm which is recorded as a peak with height proportional to H2O2 concentration. The performance of the proposed system was evaluated by monitoring the consumption of H2O2 during the photodegradation of dichloroacetic acid solution by foto-Fenton reaction.

引用

页码：188 / 190

页数：3

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