2022 Early Hearing Detection & Intervention Virtual Conference

March 13 - 15, 2022

5/24/2021 | 8:30 AM - 10:30 AM | Are plasticizers toxic at environmentally realistic concentrations? | Virtual Platform

Are plasticizers toxic at environmentally realistic concentrations?

Are plasticizers toxic at environmentally realistic concentrations? Plastics have been recognised as physical stressors in the environment, but a growing number of studies have also indicated the potential of plastics as chemical stressors. Two primary pathways have been identified for plastics acting as chemical stressors and these are i) as vectors for absorbed chemicals and ii) leaching of chemicals such as plasticizers added to plastics during their production. Three commonly used plasticizers, which have also been found in aquatic environments are calcium stearate, dibutyl phthalate, and bisphenol A. This study investigates the long-term chronic toxicity of three plasticizers at environmentally realistic concentrations. No short-term mortality risk at environmental levels were found. A limited response of fish egg hatching to plasticizers was found, but this occurred at levels of plasticizer that were higher than those reported from the environment. A clear negative response of snail reproduction was found at levels of bisphenol A that can easily be found in the environment. This was found in M. tuberculate, and the risk may extend to other taxa too.

Contaminants
Pollution
Monitoring

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Presenters/Authors

Oghenekaro Nelson Odume (), Rhodes University, South Africa, odume.nelson@gmail.com;