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Environ Sci Technol

Title:		Qualitative and quantitative analysis of volatile constituents from latrines
Author(s):		Lin J; Aoll J; Niclass Y; Velazco MI; Wunsche L; Pika J; Starkenmann C;
Address:		"Firmenich SA, Corporate R&D Division, P.O. Box 239, CH-1211 Geneva 8, Switzerland"
Journal Title:		Environ Sci Technol
Year:		2013
Volume:		20130705
Issue:		14
Page Number:		7876 - 7882
DOI:		10.1021/es401677q
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"More than 2.5 billion people defecate in the open. The increased commitment of private and public organizations to improving this situation is driving the research and development of new technologies for toilets and latrines. Although key technical aspects are considered by researchers when designing new technologies for developing countries, the basic aspect of offending malodors from human waste is often neglected. With the objective of contributing to technical solutions that are acceptable to global consumers, we investigated the chemical composition of latrine malodors sampled in Africa and India. Field latrines in four countries were evaluated olfactively and the odors qualitatively and quantitatively characterized with three analytical techniques. Sulfur compounds including H2S, methyl mercaptan, and dimethyl-mono-(di;tri) sulfide are important in sewage-like odors of pit latrines under anaerobic conditions. Under aerobic conditions, in Nairobi for example, paracresol and indole reached concentrations of 89 and 65 mug/g, respectively, which, along with short chain fatty acids such as butyric acid (13 mg/g) explained the strong rancid, manure and farm yard odor. This work represents the first qualitative and quantitative study of volatile compounds sampled from seven pit latrines in a variety of geographic, technical, and economic contexts in addition to three single stools from India and a pit latrine model system"
Keywords:		*Feces Humans Odorants Solid Phase Microextraction Volatile Organic Compounds/*analysis;
Notes:		"MedlineLin, Jianming Aoll, Jackline Niclass, Yvan Velazco, Maria Ines Wunsche, Laurent Pika, Jana Starkenmann, Christian eng 2013/07/09 Environ Sci Technol. 2013 Jul 16; 47(14):7876-82. doi: 10.1021/es401677q. Epub 2013 Jul 5"