J. Agric. Food Chem. 1981, 29, 125-130
125
uptake from soil contaminated by runoff. Periodic anal-
Nan W. Pryor for assisting in analyses.
yses of the soil of the treated plot indicated that essentially
LITERATURE CITED Bull, D. L. "Radiotracer Studies of Chemical Residues in Food and Agriculture"; International Atomic Energy Agency: Vienna, 1972;pp 25-33. Bull, D. L.; Ivie, G. W. J. Agric. Food Chem. 1976, 24, 143. Bull, D. L.; Stokes, R. A.; Coppedge, J. R.; Ridgway, R. L. J.Econ. Entomol. 1970, 63, 1238. Bull, D. L.; Whitten, C. J.; Ivie, G. W. J.Agric. Food Chem. 1976, 24,601. Hurt, W.S.,Rohm and Haas Co., Spring House, PA, personal communication. 1980.
all (>95%) of the radioactive material detected was located near the surface (0-7.5 cm deep). Residues in that layer on Aug 3, Sept 7, Nov 2, and Dec 4,1979, were 0.3 f 99.5% pure or purified by further TLC in toluene before use. The isomeric composition of some of the compounds was 0 1981 Amerlcan Chemical Society
