A study to determine the effect of certain synthetic organic
insecticides on the Biochemical Oxygen Demand (BOD) Test was
performed. BOD tests on a standard glucose-glutamic acid substrate
were conducted while in the presence of dieldrin, dichlorodiphenyltrichloroethane
(DDT), or diazinon. From the BOD data, the following
parameters were obtained:
1....
The accumulation of dieldrin and its effects on species composition of benthic algal communities were studied in laboratory
streams. Effects of dieldrin on photosynthetic and respiratory
rates of the blue-green alga Phormidium retzii were determined using
a Gilson Differential Respirometer.
Dieldrin concentrations ranging from 0.05 to 7.0 ppb were
maintained...