Uptake of 2,4-D and fipronil by green manure species: an ecotoxicological assessment of soil phytoremediation.

Pesticides such as 2,4-dichlorophenoxyacetic acid (2,4-D) and fipronil pose potential risks in agricultural soils, and phytoremediation is a promising alternative to mitigate their ecotoxicity. In this study, the potential of three green manure species, , , and , was assessed in terms of their ability to reduce soil ecotoxicity by examining the uptake of 2,4-D and fipronil, both individually and in a mixture. The experiments were performed with 20 µg kg of each pesticide, lasting 30 days, and the contaminants were quantified in soil and plant biomass (shoots and roots).

Anaerobic treatment removing tetrabromobisphenol A and biota safety: How do tropical aquatic species respond to effluent toxicity over short- and long-term exposures?

Wastewater containing tetrabromobisphenol A (TBBPA), a commonly used flame retardant found in wastewater, can present significant toxic effects on biota, yet its impact on tropical freshwater environments is not well understood. This study explores the effectiveness of two independent anaerobic treatment systems, the acidogenic reactor (AR) and the methanogenic reactor (MR), for the ecotoxicity reduction of TBBPA-rich wastewater in four tropical freshwater species. Despite presenting good physicochemical performance and reduced toxicity of the influent for most species, AR and MR treatments remain acute and chronic toxicity.

Pristina longiseta reproduction test: chronic exposure to environmental contaminants.

Aquatic worms are considered a suitable group to evaluate the effects of contaminants on the environment, although one of the main challenges is to use the species of local occurrence. Recently, Pristina longiseta was suggested to be used in acute bioassays. In this context, this study aimed to establish a chronic exposure for ecotoxicological bioassays using the cosmopolitan species of occurrence in Brazilian freshwater P.