Behaviour of DDT under laboratory and outdoor conditions in Germany
Titel:
Behaviour of DDT under laboratory and outdoor conditions in Germany
Auteur:
Vollner, L. Klotz, D.
Verschenen in:
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes
Paginering:
Jaargang 29 (1994) nr. 1 pagina's 161-167
Jaar:
1994
Inhoud:
Experiments were conducted on adsorption, volatilization and UV-degradation of p,p'-DDT on soil surface, and leaching and degradation in sand columns. p,p'-DDT was shown to adsorb stronger to soils with higher organic content. UV irradiation at 290 nm for 10 hours mineralized less than 0.1% of DDT in soil. Results show that only 0.1% of DDT volatilized in a sun-exposed semi-closed quartz system. Polar compounds accounted from 1.4% after 55 days. The rate of volatilization and degradation in an open system was much higher; only 15% DDT and 7% DDE were recovered after 6 weeks in the organic extract. p,p'-DDT was adsorbed to a great extent on the top layers of sand columns; 86% in the top 8 cm.
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