Dieldrin: Extraction of Accumulations by Root Uptake

See allHide authors and affiliations

Science  22 Apr 1966:
Vol. 152, Issue 3721, pp. 530-531
DOI: 10.1126/science.152.3721.530


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.