Measuring Ozone by Indigo Method: Interference of Suspended Material
Publication: Journal of Environmental Engineering
Volume 118, Issue 6
Abstract
The indigo trisulfonate method has been proposed in the current edition of Standard Methods for the Examination of Water and Wastewater, published in 1989, for measuring ozone residual in water and wastewater. A potential interference to the proposed method is the presence of suspended matter in the sample. The effects of this potential interference, as well as possible corrections, were investigated. To the extent that membrane filtration can remove the confounding substances without removing the indigo color, it can prevent this interference.
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References
1.
Bader, H., and Hoigné, J. (1981). “Determination of ozone in water by the indigo method.” Water Res., 15(4), 449–456.
2.
Bader, H., and Hoigné, J. (1982). “Determination of ozone in water by the indigo method; a submitted standard method.” Ozone: Sci. and Engrg., 4(4), 169–176.
3.
Gilbert, E., and Hoigné, J. (1986). “Ozone measurement in water treatment plants: Comparison of the DPD and indigo methods.” Analytical Aspects of Ozone Treatment of Water and Wastewater, R. G. Rice, L. J. Bollyky, and W. J. Lacy, eds., Lewis Publishers, Inc., Chelsea, Mich., 245–256.
4.
Standard methods for the examination of water and wastewater. (1989). 17th Ed., American Public Health Association (APHA), Washington, D.C., 4–162–4–165.
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Information
Published In
Journal of Environmental Engineering
Volume 118 • Issue 6 • November 1992
Pages: 988 - 993
Copyright
Copyright © 1992 ASCE.
History
Published online: Nov 1, 1992
Published in print: Nov 1992
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