Investigation of effects of trifluoroacetate on vernal pool ecosystems

摘要

Trifluoroacetate(CH_3COOˉ, TFA) is a breakdown product of hydrochlorofluorocarbons and hydrofluorocarbons and is released by the heating of Teflon~R products. Because of its chemical properties, concentrations in evaporative wetlands are predicted to increase with time. This study focused on assessing the impact of this haloacetic acid on vernal pool soil microbial communities as well as vernal pool and wetland plant species. Microbial respiration for three vernal pool soils and an agricultural soil was not affected by TFA exposures(0, 10, 100, 1,000, and 10,000 μg/L), and degradation of TFA by microbial communities was not observed in soils incubated for three months.