The identification and possible environmental impact of trace gases and vapours in landfill gas |
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| Affiliation: | 1. Environmental Safety Group, Harwell Laboratory, Didcot, Oxon., USA;1. Department of Chemistry, University of Munich (LMU), Butenandtstr. 5–13, 81377 Munich, Germany;2. Mineralogical State Collection Munich (SNSB), Theresienstr. 4, 80333 Munich, Germany;1. Oil Crops Research Institute, Chinese Academy of Agricultural, Wuhan 430062, PR China;2. Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, PR China;3. Key Laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, PR China;4. Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, 430062, PR China;5. Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, PR China |
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| Abstract: | Trace compounds present in gas from six landfill sites have been identified and their concentrations measured. At least 100 components are present including hydrocarbons, esters, terpenes and organic sulphur compounds. In domestic waste sites these varied with the age of the refuse.Industrial waste sites evolved gas much richer in hydrocarbons and solvents including halocarbons. Vinyl chloride and benzene were also present in significant concentrations. A 100-fold dilution would be advisable to eliminate any long-term health hazard. Domestic waste sites do not pose a health hazard due to minor components although a 1,000,000-fold dilution is required to bring some of them below the odour threshold. At most sites, hydrogen sulphide was not a significant contributor to smell. |
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