Compartmentalization of 14C-DDT in an experimental old-field plot.

Of the 2.81 X 10(6) micrograms DDT applied to the plot in June 1976, 2.58 X 10(6) micrograms (91.8%) were accounted for as of June 1977. Silk screens, ethylene glycol air samples, and run-off contained 40.57 X 40(-3)%, 0.09 X 10(-3)%, and 1.18 X 10(-3)%, respectively of the DDT aplied. Soil was the major sink for DDT in this study, with 91.8% of the applied DDT located there. Most of the remaining 8.2% was probably lost during the formulation and application of the 14C-DDT granules, some was probably lost in organisms (mainly flying insects) leaving the plot, and some was accounted for by experimental error and error in the counting technique.