Dieldrin in water

Water samples were extracted 3 times with 50 ml of petroleum ether and anhydrous Na2S04 was added to the combined 150 ml extract. The extract was evaporated just to dryness and dissolved in benzene for GLC analysis. The extraction efficiency for dieldrin in water was 95%. 

Time Hours Dieldrin, ng/midge Dieldrin in water, ng Loss, ng/midge/hr... 

Kellogg, R.L., and R.V. Bulkley. 1976. Seasonal concentrations of dieldrin in water, channel catfish, and catfish-food organisms, Des Moines River, Iowa. 1971-1973. Pesticides Monitoring Journal 9 186-194. 

Leung, S.-Y., T.R.V. Bulkley, and J.J. Richard. 1981. Persistence of dieldrin in water and channel catflsh from the Des Moines River, Iowa, 1971-73. Pesticides Monitoring Journal 15 98-102. 

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See also in sourсe #XX -- [ , ]

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