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Fugacity- and biotransformation-based mechanistic insights into the trophic transfer of organophosphate flame retardants in a subtropical coastal food web from the Northern Beibu Gulf of China.
Zhang, Li; Yang, Xi; Low, Wee Vian; Ma, Jiaxin; Yan, Cheng; Zhu, Zuhao; Lu, Lu; Hou, Rui.
Afiliación
  • Zhang L; Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development & Key Laboratory of Tropical Marine Ecosystem and Bioresource, Fourth Institute of Oceanography, MNR, Beihai, 536000, PR China.
  • Yang X; Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development & Key Laboratory of Tropical Marine Ecosystem and Bioresource, Fourth Institute of Oceanography, MNR, Beihai, 536000, PR China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pol
  • Low WV; Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development & Key Laboratory of Tropical Marine Ecosystem and Bioresource, Fourth Institute of Oceanography, MNR, Beihai, 536000, PR China; Ocean Colleage, Zhejiang University, Zhoushan, 316021, PR China.
  • Ma J; Central & Southern China Municipal Engineering Design and Research Institute Co., Ltd., Wuhan, 430074, PR China.
  • Yan C; School of Environmental Studies, China University of Geosciences, Wuhan, 430074, PR China.
  • Zhu Z; Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development & Key Laboratory of Tropical Marine Ecosystem and Bioresource, Fourth Institute of Oceanography, MNR, Beihai, 536000, PR China.
  • Lu L; Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development & Key Laboratory of Tropical Marine Ecosystem and Bioresource, Fourth Institute of Oceanography, MNR, Beihai, 536000, PR China.
  • Hou R; Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China. Electronic address: ruihou@scsio.ac.cn.
Water Res ; 261: 122043, 2024 Sep 01.
Article en En | MEDLINE | ID: mdl-38981351
ABSTRACT
The bioaccumulation and trophic transfer of organophosphate flame retardants (OPFRs) in marine ecosystems have attracted great attention in recent research, but our understanding of the trophic transfer mechanisms involved is limited. In this study, we investigated the trophodynamics of OPFRs and their metabolites in a subtropical coastal food web collected from the northern Beibu Gulf, China, and characterized their trophodynamics using fugacity- and biotransformation-based approaches. Eleven OPFRs and all seven metabolites were simultaneously quantified in the shellfish, crustacean, pelagic fish, and benthic fish samples, with total concentrations ranging from 164 to 4.11 × 104 and 4.56-4.28 × 103 ng/g lipid weight, respectively. Significant biomagnification was observed only for tris (phenyl) phosphate (TPHP) and tris (2-ethylhexyl) phosphate (TEHP), while other compounds except for tris(2-chloroethyl) phosphate (TCEP) displayed biomagnification trends based on Monte Carlo simulations. Using a fugacity-based approach to normalize the accumulation of OPFRs in biota to their relative biological phase composition, storage lipid is the predominant biological phase for the mass distribution of 2-ethylhexyl diphenyl phosphate (EHDPHP) and TPHP. The water content and structure protein are equally important for TCEP, whereas lipid and structure protein are the two most important phases for other OPFRs. The mass distribution of these OPFRs along with TLs can explain their trophodynamics in the food web. The organophosphate diesters (as OPFR metabolites) also displayed biomagnification trends based on bootstrapped estimation. The correlation analysis and Korganism-water results jointly suggested the metabolites accumulation in high-TL organisms was related to biotransformation processes. The metabolite-backtracked trophic magnification factors for tri-n­butyl phosphate (TNBP) and TPHP were both greater than the values that accounted for only the parent compounds. This study highlights the incorporation of fugacity and biotransformation analysis to characterize the trophodynamic processes of OPFRs and other emerging pollutants in food webs.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Organofosfatos / Contaminantes Químicos del Agua / Biotransformación / Cadena Alimentaria / Retardadores de Llama Límite: Animals País/Región como asunto: Asia Idioma: En Revista: Water Res Año: 2024 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Organofosfatos / Contaminantes Químicos del Agua / Biotransformación / Cadena Alimentaria / Retardadores de Llama Límite: Animals País/Región como asunto: Asia Idioma: En Revista: Water Res Año: 2024 Tipo del documento: Article
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