DDT and Dieldrin in Rivers: A Report of the National Water Quality Network

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Science  06 Sep 1963:
Vol. 141, Issue 3584, pp. 899-901
DOI: 10.1126/science.141.3584.899-a


As a part of the waterquality surveillance activities of the National Water Quality Network at 101 sampling stations, insecticides were identified in 38 samples from ten rivers during the period May through December 1962. Both DDT and dieldrin were identified by infrared and gas chromatographic analysis of carbon adsorption extracts.