Water Science & Technology: Water Supply Vol 6 No 3 pp 147–155 © IWA Publishing 2006 doi:10.2166/ws.2006.732
Sensory and chemical analysis methods for earthy and musty odours in drinking water caused by geosmin and 2-methylisoborneol
Z. Wang*,**, I.H. Suffet** and Al-Samarrai**
*Department of Environmental Science and Engineering, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, , China (E-mail: zpwang@ucla.edu)
**Department of Environmental Health Sciences, School of Public Health, University of California at Los Angeles, Los Angeles, , CA 90095, USA (E-mail: msuffet@ucla.edu)
ABSTRACT
Earthy and musty odours are amongst the most frequently observed objectionable odours in water supplies, and geosmin and 2-methylisoborneol are identified as the chemical compounds most closely associated with these odours. In this paper, the sensory properties, and the water matrix effects on taste and odour panel studies, as well as the chemical analysis methods for earthy and musty odours in drinking water caused by geosmin and 2-methylisoborneol, are reviewed. Insights are developed to enable better evaluation of earthy and musty odours in drinking water. Early detection of geosmin and MIB can prevent off-flavour occurrence by providing information for potential treatment.
Keywords: Chemical analysis; drinking water; earthy and musty odours; geosmin; 2-methylisoborneol; sensory properties; water matrix effects
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