Accession Number : AD0781903

Title :   Microbial Degradation of DDT.

Descriptive Note : Annual rept. no. 2, 1 Jul 73-30 Jun 74,

Corporate Author : CORNELL UNIV ITHACA N Y DEPT OF AGRONOMY

Personal Author(s) : Alexander,Martin

Report Date : 01 JUL 1974

Pagination or Media Count : 35

Abstract : One-half of the marine bacteria tested converted DDT to water-soluble products. Mucor alternans converted DDT to water-soluble metabolites at a rate four times greater than the most active marine bacterium. Techniques were developed to isolate and purify these metabolites. The relationship of chemical structure to biodegradability of DDT analogs was investigated. Para substitution of one of the two aromatic rings with chloro, nitro, hydroxyl, or amino groups significantly reduced the rate of biodegradability. The most resistant compounds were those with both rings containing these substituents. Various environmental factors were examined for their effect on DDT metabolism in marine waters. (Modified author abstract)

Descriptors :   *DDT, *Biodeterioration, *Bacteria, Insecticides, Pesticides, Microorganisms, Sea water, Metabolites, Solubility, Water, Water pollution

Subject Categories : Microbiology
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE