Water Science & Technology Vol 55 No 1-2 pp 315–320 © IWA Publishing 2007 doi:10.2166/wst.2007.056
Rapid and comprehensive indicator for evaluation of performance of treatment processes and of river waters
H.K. Kim*, B.C. Lee**, S.D. Kim**, T. Kamei*** and Y. Magara***
*Youngsan River water Research Lab., National Institute of Environmental Research, 1110-8 Oryong-dong, Buk-gu, Gwangju, 500-480, Korea
**Department of Environmental Science and Engineering Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju, 500-712, Korea (E-mail: ganbare_69@hotmail.com)
***Graduate School of Engineering, Hokkaido University, N13, W8, Kita-ku, Sapporo, 060-8628, Japan
ABSTRACT
Naturally occurring UV active compounds, commonly present in almost all source waters, can be rapidly monitored by their ultraviolet absorbance at 260 nm (E260). Herein, the extent of correlation between the E260 and the removal efficiency of the hazardous contaminants, endocrine disrupters and dioxins, were investigated using various treatment and river source waters. The detection of various types of hazardous contaminants using sophisticated analytical methods, such as high resolution gas chromatography (HRGC)/high resolution mass spectrometry (HRMS) and high performance liquid chromatography (HPLC)/inductively coupled plasma (ICP)/mass spectrometry (MS), as well as various short-term bioassays, can require hours or even days for results to be obtained. The removal of the E260 correlated well with those of individual contaminants, such as endocrine disruptor chemicals and dioxins, with the various treatment processes employed. In the plots of the endocrine disrupters against the DOC/E260, a correlation was found with the endocrine activity of the Korean/Japanese river waters employed in this study.
Keywords: Dioxin; E260; oestrogenic activity; water treatment plants
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