Journal article
Formation of chloroform in soil. A year-round study at a Danish spruce forest site
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.
Language: | English |
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Publisher: | Kluwer Academic Publishers |
Year: | 2002 |
Pages: | 35-41 |
ISSN: | 15732940 , 00496979 , 15677230 and 15732932 |
Types: | Journal article |
DOI: | 10.1023/A:1015896719508 |