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Occurrence, biomagnification and maternal transfer of legacy and emerging organophosphorus flame retardants and plasticizers in water snake from an e-waste site
Graphical abstract Display Omitted
Highlights The occurrence of PFRs and plasticizers in water snake was first reported. Metabolites of PFRs were in the same order of magnitude as their parent chemicals. No biomagnification was found for PFRs and plasticizers in water snake. Biotransformation influences the biomagnification of PFRs in water snake. Maternal transfer potential was positively correlated with log K OW (<6).
Abstract Water snake and small common carp samples collected from a Chinese pond polluted with electronic waste (e-waste) were analyzed for organophosphorus flame retardants (PFRs), PFR metabolites, and plasticizers to investigate their occurrence, biomagnification, and maternal transfer in ovoviviparous species. Mean concentrations of total PFRs, PFR metabolites, and plasticizers were 2.2–16, 1.3–2.8 and 151–1320 ng/g wet weight (ww), respectively in analyzed organisms. Metabolites of PFRs were found in the same order of magnitude as or even higher than their parent compounds, indicating the importance of monitoring metabolites to evaluate the internal exposure of PFRs in organisms. Biomagnification factors (BMFs) were below 1 for all targeted chemicals and negatively correlated with metabolite/parent ratios (MPRs), suggesting a biodilution driven by metabolism. The lipid normalized concentrations were lower in eggs than in muscle for most of targeted chemicals. The maternal transfer potential was significantly and positively correlated with log K OW (p < 0.05) when log K OW was below 6.
Occurrence, biomagnification and maternal transfer of legacy and emerging organophosphorus flame retardants and plasticizers in water snake from an e-waste site
Graphical abstract Display Omitted
Highlights The occurrence of PFRs and plasticizers in water snake was first reported. Metabolites of PFRs were in the same order of magnitude as their parent chemicals. No biomagnification was found for PFRs and plasticizers in water snake. Biotransformation influences the biomagnification of PFRs in water snake. Maternal transfer potential was positively correlated with log K OW (<6).
Abstract Water snake and small common carp samples collected from a Chinese pond polluted with electronic waste (e-waste) were analyzed for organophosphorus flame retardants (PFRs), PFR metabolites, and plasticizers to investigate their occurrence, biomagnification, and maternal transfer in ovoviviparous species. Mean concentrations of total PFRs, PFR metabolites, and plasticizers were 2.2–16, 1.3–2.8 and 151–1320 ng/g wet weight (ww), respectively in analyzed organisms. Metabolites of PFRs were found in the same order of magnitude as or even higher than their parent compounds, indicating the importance of monitoring metabolites to evaluate the internal exposure of PFRs in organisms. Biomagnification factors (BMFs) were below 1 for all targeted chemicals and negatively correlated with metabolite/parent ratios (MPRs), suggesting a biodilution driven by metabolism. The lipid normalized concentrations were lower in eggs than in muscle for most of targeted chemicals. The maternal transfer potential was significantly and positively correlated with log K OW (p < 0.05) when log K OW was below 6.
Occurrence, biomagnification and maternal transfer of legacy and emerging organophosphorus flame retardants and plasticizers in water snake from an e-waste site
Liu, Yin-E (author) / Tang, Bin (author) / Liu, Yu (author) / Luo, Xiao-Jun (author) / Mai, Bi-Xian (author) / Covaci, Adrian (author) / Poma, Giulia (author)
2019-10-02
Article (Journal)
Electronic Resource
English
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