Structural influences of low-molecular-weight dissolved organic carbon mimics on the photolytic fate of artazine

摘要

The fate of atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-traizine) was examined in the presence of dissolved organic carbon (DOC) mimics to discern the effect of the various structural characteristics of DOC with respect to direct photolysis and transformation via a photoinitiated nitrate-mediated hydroxy radical process (indirect photolysis). Experiments were conducted with confierly alcohol, 2-ocantol, oxalic acid, pyrogallol, quinone, and salicylic acid. All mimics except octanol and coniferyl alcohol caused an increase in the atrazine degradation rate when no nitrate was present.