A Standard Method for Quantification of Earthy-Musty Odorants in Water, Sediments, and Algal Cultures
1983; Pergamon Press; Volume: 15; Issue: 6-7 Linguagem: Inglês
10.2166/wst.1983.0137
ISSN1996-9732
AutoresStuart W. Krasner, Cordelia J. Hwang, Michael J. McGuire,
Tópico(s)Marine Toxins and Detection Methods
ResumoThe closed-loop stripping analysis (CLSA) method of Grob, in combination with gas chromatography/mass spectrometry (GC/MS), has been used in the determination of five earthy-musty-smelling compounds (including geosmin and 2-methylisoborneol). One-liter water samples are analyzed within 3 hours, with detection limits as low as 2 ng/l each. Precision and accuracy levels of 20 percent or better are obtainable with this method. This technique has been modified to include the CLSA of sediments and laboratory-grown microbiological cultures in order to investigate the sources of the odorous compounds. CLSA-GC/MS provides a valuable tool for extended surveys and regular monitoring of water supplies, and it is indispensable in the understanding and management of earthy-musty taste and odor problems.
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