J. Kochany, R. Maguire
Feb 1, 1994
Citations
2
Influential Citations
69
Citations
Journal
Journal of Agricultural and Food Chemistry
Abstract
The chemical and photochemical stability of the herbicide metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide] was determined in organic-free water and lake water containing various solutes. Metolachlor was fairly stable in lake water in the dark, with <4% loss after 100 days. Sunlight photodegradation of metolachlor was faster than purely chemical degradation but was still a relatively slow process, with estimated near-surface half-lives in lake water of 22 calendar days in summer and 205 calendar days in winter at 40 o N latitude. In 5 mg/L solutions of dissolved organic matter, the estimated half-lives were 2-3 times longer, depending upon the season [...]