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Role of Humic Carrier Substances in DDT Movement through Forest Soil
Author(s) -
Ballard T. M.
Publication year - 1971
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1971.03615995003500010041x
Subject(s) - lysimeter , leaching (pedology) , environmental chemistry , chemistry , urea , forest floor , soil water , humic acid , environmental science , soil science , organic chemistry , fertilizer
In DDT‐treated forest floor columns, over 30 times as much DDT was recovered by leaching with water when urea was added to disperse the humic acids. Using similar treatment and analysis, alundum tension lysimeters in soil 2 cm below the forest floor yielded no detectable levels of DDT. In DDT‐treated humic extracts, 91% of added o,p' ‐DDT was recovered in humic acids and 9% in fulvic acids plus water.