Stability Studies of Selected Phenoxyacid Herbicides in Water Samples and Determination of Their Transformation Products

摘要

Herbicides as phenoxyacids ate commonly used in agriculture (i.e.: for post-emergence control of bioadleaf weeds and wood plants) and it is not surprising that many of these compounds have been detected in natural waters. Current understanding of the biological impacts of herbicide use is limited by the fact that most investigations have focused on the active ingredients (mother compounds) without considering their transformation products (Kolpin et al. 2000). The degradation products of many herbicides are relatively stable and persistent, and in same cases they can be more toxic then their parent compounds (Coats 199.3; Belfroidetal 1998).