Replacing dichromate with hydrogen peroxide in the chemical oxygen demand (COD) test

被引：8

作者：

Carbajal-Palacios, Patricia ^{[2
]}

Balderas-Hernandez, Patricia ^{[2
]}

Ibanez, Jorge G. ^{[1
]}

Roa-Morales, Gabriela ^{[2
]}

机构：

[1] Univ Iberoamer, Ctr Mexicano Quim Verde & Microescala, Depto Ing & C Quim, Mexico City 01219, DF, Mexico

[2] Ctr Conjunto Invest Quim Sustentable UAEMex UNAM, Toluca 50200, Mexico

来源：

WATER SCIENCE AND TECHNOLOGY | 2012年 / 66卷 / 05期

关键词：

chemical oxygen demand; dichromate; green chemistry; hydrogen peroxide; oxidation; SYSTEM;

D O I：

10.2166/wst.2012.288

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The widely used standard method for chemical oxygen demand (COD) involves hazardous chromium species, and its two-hour heating protocol entails a substantial amount of energy expenditure. In the present work we report a proof of concept for a major modification of this method in the range 10-800 mg(COD)/L, whereby H2O2 is proposed as a replacement oxidizer. This modification not only reduces the use of unsafe chromium species but also allows for the use of milder conditions that decrease the total energy outlay. The results are comparable with those obtained either with the standard method or with a commercial Hach (R) kit.

引用

页码：1069 / 1073

页数：5

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