ATRAZINE BIODEGRADATION TO DEISOPROPYLATRAZINE AND DEETHYLATRAZINE IN COASTAL SEDIMENTS OF DIFFERENT LAND USES

摘要

Atrazine, a triazine herbicide widely used in the United States, contributes to surface-water and groundwater contam- ination, as can deisopropylatrazine (DIA) and deethylatrazine (DEA), two of its microbial degradation products. Production of DIA and DEA by native bacteria in aquatic sediments has not been investigated thoroughly. We assessed atrazine and production of DIA and DEA over time in coastal aquatic sediments associated with different land uses including creeks from an undeveloped preserve and a suburban development, a golf course drainage ditch, and a contaminated commercial harbor.