《Journal of Solid State Electrochemistry》杂志刊登“测量化学需氧量的清洁方法：铜电极法”

作者：Claudineia R. Silva, Cleone D. C. Conceição, Viviane G. Bonifácio, Orlando Fatibello Filho, Marcos F. S. Teixeira

刊物：《Journal of Solid State Electrochemistry》，2009年5月，13卷，第5期，665－669页

关键词：化学需氧量；铜电极；伏安法测量；绿色化学

摘要：本文提出了一种测量化学需氧量的新型清洁方法，该方法利用铜电极作为电化学传感器，测量的基本原理是基于废水中有机物的氧化电流不同。本文对电解液浓度和电位扫描速率等一些重要实验条件对去除效果的影响进行了研究。此方法化学需氧量的检测范围为53.0~2801.4mg/L，检出限为20.3mg/L。该方法被成功地用于轻工业废水中化学需氧量的测定，其测量结果与用传统方法得到的测量结果具有一致性。因此，这种方法可以简单，快速，准确地得到样品的化学需氧量的值，同时最终产物不含有毒金属物质。

Determination of the chemical oxygen demand (COD) using a copper electrode: a clean alternative method

Authors: Claudineia R. Silva, Cleone D. C. Conceição, Viviane G. Bonifácio, Orlando Fatibello Filho, Marcos F. S. Teixeira

Journal: Journal of Solid State Electrochemistry, May 2009, Volume 13, Issue 5, pp 665-669

Key word: COD; Copper electrode; Voltammetric determination; Green chemistry

Abstract: A clean alternative method for the determination of chemical oxygen demand (COD) was developed using a copper electrode as an electrocatalytic sensor. The measuring principle is based on oxidation current of organic compounds in the wastewater. The effects of important experimental conditions, such as electrolytic solution concentration and potential scan rate, on analytical performance have been investigated. Analytical linear range of 53.0–2,801.4 mg/LCOD with detection limit of 20.3 mg/L COD was achieved. The procedure was successfully applied to the COD determination in wastewater from soft industries. The results obtained using the proposed method were in good agreement with those obtained using the conventional (i.e., dichromate) COD method. In this fashion, the COD value of a sample can be determined in a simple, rapid, accurate manner, and the end products do not contain toxic metals.

原文链接：http://link.springer.com/article/10.1007/s10008-008-0580-9