Tissue-specific distribution and bioaccumulation of perfluoroalkyl acids, isomers, alternatives, and precursors in citrus trees of contaminated fields : Implication for risk assessment
Copyright © 2023 Elsevier B.V. All rights reserved..
The ingestion of fruits containing perfluoroalkyl acids (PFAAs) presents potential hazards to human health. This study aimed to fill knowledge gaps concerning the tissue-specific distribution patterns and bioaccumulation behavior of PFAAs and their isomers, alternatives, and precursors (collectively as per-/polyfluoroalkyl substances, PFASs) within citrus trees growing in contaminated fields. It also assessed the potential contribution of precursor degradation to human exposure risk of PFASs. High concentrations of total target PFASs (∑PFASstarget, 92.45-7496.16 ng/g dw) and precursors measured through the total oxidizable precursor (TOP) assay (130.80-13979.21 ng/g dw) were found in citrus tree tissues, and short-chain PFASs constituted the primary components. The total PFASs concentrations followed the order of leaves > fruits > branches, bark > wood, and peel > pulp > seeds. The average contamination burden of peel (∑PFASstarget: 57.75%; precursors: 71.15%) was highest among fruit tissues. Bioaccumulation factors (BAFs) and translocation potentials of short-chain, branched, or carboxylate-based PFASs exceeded those of their relatively hydrophobic counterparts, while ether-based PFASs showed lower BAFs than similar PFAAs in above-ground tissues of citrus trees. In the risk assessment of residents consuming contaminated citruses, precursor degradation contributed approximately 36.07% to total PFASs exposure, and therefore should not be ignored.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:465 |
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| Enthalten in: |
Journal of hazardous materials - 465(2024) vom: 05. Feb., Seite 133184 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liu, Zhaoyang [VerfasserIn] |
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| Links: |
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| Themen: |
Alkanesulfonic Acids |
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| Anmerkungen: |
Date Completed 08.02.2024 Date Revised 08.02.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jhazmat.2023.133184 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM365557986 |
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| 520 | |a The ingestion of fruits containing perfluoroalkyl acids (PFAAs) presents potential hazards to human health. This study aimed to fill knowledge gaps concerning the tissue-specific distribution patterns and bioaccumulation behavior of PFAAs and their isomers, alternatives, and precursors (collectively as per-/polyfluoroalkyl substances, PFASs) within citrus trees growing in contaminated fields. It also assessed the potential contribution of precursor degradation to human exposure risk of PFASs. High concentrations of total target PFASs (∑PFASstarget, 92.45-7496.16 ng/g dw) and precursors measured through the total oxidizable precursor (TOP) assay (130.80-13979.21 ng/g dw) were found in citrus tree tissues, and short-chain PFASs constituted the primary components. The total PFASs concentrations followed the order of leaves > fruits > branches, bark > wood, and peel > pulp > seeds. The average contamination burden of peel (∑PFASstarget: 57.75%; precursors: 71.15%) was highest among fruit tissues. Bioaccumulation factors (BAFs) and translocation potentials of short-chain, branched, or carboxylate-based PFASs exceeded those of their relatively hydrophobic counterparts, while ether-based PFASs showed lower BAFs than similar PFAAs in above-ground tissues of citrus trees. In the risk assessment of residents consuming contaminated citruses, precursor degradation contributed approximately 36.07% to total PFASs exposure, and therefore should not be ignored | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Bioaccumulation behavior | |
| 650 | 4 | |a Citrus tree | |
| 650 | 4 | |a Human health risk | |
| 650 | 4 | |a Per-/polyfluoroalkyl substances | |
| 650 | 4 | |a Total oxidizable precursor assay | |
| 650 | 7 | |a Fluorocarbons |2 NLM | |
| 650 | 7 | |a Water Pollutants, Chemical |2 NLM | |
| 650 | 7 | |a Alkanesulfonic Acids |2 NLM | |
| 700 | 1 | |a Liu, Shun |e verfasserin |4 aut | |
| 700 | 1 | |a Xiao, Feng |e verfasserin |4 aut | |
| 700 | 1 | |a Sweetman, Andrew J |e verfasserin |4 aut | |
| 700 | 1 | |a Cui, Qianqian |e verfasserin |4 aut | |
| 700 | 1 | |a Guo, Hao |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Jiayi |e verfasserin |4 aut | |
| 700 | 1 | |a Luo, Ziyao |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Mingxia |e verfasserin |4 aut | |
| 700 | 1 | |a Zhong, Linlin |e verfasserin |4 aut | |
| 700 | 1 | |a Gan, Jay |e verfasserin |4 aut | |
| 700 | 1 | |a Tan, Wenfeng |e verfasserin |4 aut | |
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