300 dpi: (d2727-1.jpg)
640 pixels wide: (d2727-1.jpg)
 Image Number D2727-1 |
Using a gas chromatograph, technician Renee Russell analyzes the pesticide content of water samples collected at various points along a vegetated drainage ditch. The goal is to determine how the ditches affect the fate and distribution of pesticides.
Photo by Peggy Greb.
