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ERIC Number: EJ998979
Record Type: Journal
Publication Date: 2012-Jun
Pages: 5
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
Determination of Biochemical Oxygen Demand of Area Waters: A Bioassay Procedure for Environmental Monitoring
Riehl, Matthew
Journal of Chemical Education, v89 n6 p807-811 Jun 2012
A graphical method for determining the 5-day biochemical oxygen demand (BOD5) for a body of water is described. In this bioassay, students collect a sample of water from a designated site, transport it to the laboratory, and evaluate the amount of oxygen consumed by naturally occurring bacteria during a 5-day incubation period. An accuracy check, prepared by spiking a portion of the water with a glucose-glutamic acid solution, is used to evaluate the student's technique. This graphical treatment requires a larger number of samples than the standard method described in the literature, but it is not prone to errors caused by the quality of dilution water, which can invalidate measurements made with the standard method. (Contains 3 figures.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A