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The study on biotransformation of organophosphate flame retardants in aquatic ecosystem
Yeowool Choi(최여울),Junho Jeon(전준호),Sang Don Kim(김상돈) 환경독성보건학회 2021 한국독성학회 심포지움 및 학술발표회 Vol.2021 No.5
Biotransformation is an important mechanism in predicting the transformed structure and toxicity of organic pollutants in aquatic ecosystems. The effects of triphenyl phosphate (TPHP), an organophosphate flame retardant, were investigated in the study. TPHP has been widely used in manufacturing, and it is especially toxic to aquatic organisms. When TPHP was exposed to the aquatic environment, biotransformation products were identified according to the species of the aquatic food web (producer-consumer-decomposer). Liquid chromatography-high resolution mass spectrometry was used for chemical analysis. And the toxicity of biotransformation products was predicted the toxicity using the ecological structure-activity relationship model. As a result, 29 biotransformation products of TPHP were identified in aquatic species (green algae, daphnid, fish, and microorganisms). Most of the biotransformation products were predicted to be less toxic than the parent compound, TPHP. But some biotransformation products, Hydroquinone, beta-lyase compound, and fatty acid combined products, were showed to be high toxicity.