Miniaturized closed reflux, colorimetric method for the determination of chemical oxygen demand

Timothy M. Lapara, James E. Alleman, P. Greg Pope

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

The standard technique for the closed reflux, colorimetric analysis of chemical oxygen demand (COD) utilizes several hazardous compounds, including mercury, silver, chromium, and sulfuric acid. A miniaturized version of this analytical technique was developed, thereby reducing the use and disposal of these hazardous compounds by 84%. The miniaturized method demonstrated a similar level of accuracy as the conventional technique for both synthetic and actual wastewater samples. This method for closed reflux, colorimetric analysis of COD therefore represents an excellent opportunity for hazardous waste minimization in environmental water quality laboratories without compromising analytical accuracy. (C) 2000 Elsevier Science Ltd.

Original languageEnglish (US)
Pages (from-to)295-298
Number of pages4
JournalWaste Management
Volume20
Issue number4
DOIs
StatePublished - Jul 2000

Bibliographical note

Funding Information:
This work was funded by National Science Foundation Grant BES 9812159.

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