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Science 22 April 1966:
Vol. 152. no. 3721, pp. 530 - 531
DOI: 10.1126/science.152.3721.530
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Articles

Dieldrin: Extraction of Accumulations by Root Uptake

Ralph O. Mumma 1, Willis B. Wheeler 2, Donald E. H. Frear 2, and Robert H. Hamilton 3

1 Department of Biochemistry, Pennsylvania State University, University Park
2 Pesticide Research Laboratory, Department of Entomology
3 Department of Botany

Certain forage crops can absorb and translocate the chlorinated hydrocarbon insecticide dieldrin from soil or sand. An extraction technique routinely used for analyses of residues does not quantitatively remove this internal chemical, but a method employing chloroform-methanol extraction leads to essentially quantitative recovery.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)