Photochemical degradation of 2,4-D and atrazine in well-defined media

Atrazine and 2,4-D are common herbicides used for crop, lawn, and rangeland management. Photochemical degradation has been proposed as one safe and efficient remediation strategy for both 2,4-D and Atrazine. In the presence of iron(llI) and hydrogen peroxide these herbicides decay by both thermal and light induced oxidation. Past studies have focused primarily on sun light as an energy source. This work provides a mechanistic description of herbicide degradation incorporating intermediate degradation products produced in the dark and under well-defined light conditions.

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Point of View: The Lesson of David Kato

Gay activist from Uganda had applied for an Oak Fellowship at Colby; his murder should serve as a warning of the sometimes dangerous power of Americans abroad. Ellen Morris ’11 on “knowing” slain gay-rights activist David Kato.