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- Title
Formation of Chloroform in Soil. A Year-round Study at a Danish Spruce Forest Site.
- Authors
Haselmann, Kim F.; Laturnus, Frank; Grøn, Christian
- Abstract
Soil air from top soil of a Danish spruce forest was investigated monthly from December 1997 to December 1998 for the occurrence of chloroform, 1,1,1-trichloroethane, tetrachloromethane, trichloroethene and tetrachloroethene. Within the monitoring period, three different patterns of soil air concentrations were identified. For chloroform, concentrations peaked in spring and autumn while 1,1,1-trichloroethane and tetrachloromethane peaked during mid winter. Trichloroethene and tetrachloroethene, concentrations remained constant throughout the year. The relative ratios of soil air concentrations to ambient air concentrations indicated a natural production of chloroform, while the other chlorinated compounds investigated probably originated from non-point source pollution. The seasonal variation of the chloroform concentration suggested a production by microorganisms, as high chloroform concentrations were found in the soil in warm and humid periods of the year (spring and autumn) with high microbial activity.
- Subjects
CHLOROFORM; SPRUCE; SOIL air; TRICHLOROETHANE; NONPOINT source pollution; MICROORGANISMS
- Publication
Water, Air & Soil Pollution, 2002, Vol 139, Issue 1-4, p35
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1023/A:1015896719508