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J.Health Sci., 47(5), 483-490, 2001
Analysis of Malodorous Volatile Substances of Human Waste: Feces and Urine
Hiroshi Sato,*, a Toru Hirose,a Tamon Kimura,a Yasushi Moriyama,a and Yukihiko Nakashimab
aFundamental Research Laboratory, TOTO Ltd., 2-8-1 Honson, Chigasaki, Kanagawa 253-8577, Japan and bFaculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
The amounts of volatile substances responsible for the malodor of human waste (feces and urine) obtained from the storage tank of a community waste-water treatment plant were determined. Thus far, there has been little systematic research on malodor-causing substances of human waste. These substances were collected using Tenax-TA, and their concentrations were determined by the usual thermal-desorption cold-trap injector/gas chromatography/mass spectrometry (TCT/GC/MS). About 90% of the malodor-causing substances were fatty acids: acetic acid, propionic acid and butyric acid. The proportion of ammonia was 6.5%. Other malodor-causing and minor substances detected were indole, skatole, pyridine, pyrrole, hydrogen sulfide, and methyl mercaptan. In addition, a small amount of paradichlorobenzene used as a deodorizer in household toilets was also recognized.
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