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A biosensor for the determination of oxygen demand (OD) using bacteria isolated from activated sludge has been developed. This sensor allowed OD measurement with a short response time, an operation stability of 48 days, and a serial coefficient of variation of ±1.3% when a sample
solution with 6.6 mg/L OD was employed. A linear range was obtained up to 32.8 mg/L OD using a glucose–glutamic acid standard solution. Comparable results were obtained for OD values estimated by the biosensor and biochemical oxygen demand (BOD) determined by the 5-day method. The biosensor
was applied to on-the-spot estimation of OD for the effluent from wastewater treatment plants.
Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year. Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.