Atrazine degradation in a small stream in Iowa

Environmental Science & Technology
By:  and 



A study was conducted during 1990 through an 11.2-km reach of Roberts Creek in northeastern Iowa to determine the fate of atrazine in a surface water environment Water samples were collected at ~1-month intervals from April through November during stable low to medium flow conditions and analyzed for atrazine and two of its initial biotic degradation products, desethylatrazine and deisopropylatrazine. Samples were collected on the basis of a Lagrangian model of streamflow in order to sample the same parcel of water as it moved downstream. Atrazine concentrations substantially decreased (roughly 25-60%) between water entering and exiting the study reach during four of the seven sampling periods. During these same four sampling periods, the concentrations of the two biotic atrazine degradation products were constant or decreasing downstream, suggesting an abiotic degradation process.

Study Area

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Atrazine degradation in a small stream in Iowa
Series title Environmental Science & Technology
DOI 10.1021/es00038a014
Volume 27
Issue 1
Year Published 1993
Language English
Publisher American Chemical Society
Contributing office(s) Iowa Water Science Center, Toxic Substances Hydrology Program
Description 6 p.
First page 134
Last page 139
Country United States
State Iowa
Other Geospatial Robert's Creek
Online Only (Y/N) N
Additional Online Files (Y/N) N
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