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Liu D, Tang B, Nie S, Zhao N, He L, Cui J, Mao W, Jin H. Distribution of per- and poly-fluoroalkyl substances and their precursors in human blood. J Hazard Mater 2023; 441:129908. [PMID: 36115093 DOI: 10.1016/j.jhazmat.2022.129908] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/26/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Many studies have examined per- and poly-fluoroalkyl substances (PFASs) in human blood. However, the distribution of PFASs in human blood remains not well known, especially for perfluorooctane sulfonate (PFOS) precursors. In this study, human blood samples (n = 162) were collected from general Chinese population, and then the isomer-specific partitioning of PFASs between human plasma and red blood cells (RBCs) were investigated. Perfluorooctanoate (PFOA) and PFOS were consistently the predominant PFASs in both human plasma and RBCs. In human blood, among C4-C7 perfluoroalkyl carboxylates (PFCAs), the calculated mean mass fraction in plasma (Fp) values increased from 0.76 to 0.82 with the increasing chain length. C7-C13 PFCAs exhibited a trend of gradually decreasing mean Fp with chain length. Among PFAS precursors, 6:2 fluorotelomer phosphate diester had the highest mean Fp value (0.87 ± 0.11). Calculated Fp values of N-methyl perfluorooctanesulfonamide (N-MeFOSA) and N-ethyl perfluorooctanesulfonamide (N-EtFOSA) were 0.66 ± 0.13 and 0.70 ± 0.12, respectively. Individual branched isomers consistently had greater Fp values than their corresponding linear isomers for PFOA, PFHxS, and perfluoroctane sulfonamide. To our knowledge, this study first reports the distribution of N-MeFOSA and N-EtFOSA in human blood, contributing to the better understanding of the occurrence and fate of PFASs in humans.
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Affiliation(s)
- Daxi Liu
- College of Environmental Science and Technology, Hebei University of Science & Technology, Shijiazhuang, Hebei 050018, PR China
| | - Bo Tang
- College of Environmental Science and Technology, Hebei University of Science & Technology, Shijiazhuang, Hebei 050018, PR China
| | - Saisai Nie
- College of Environmental Science and Technology, Hebei University of Science & Technology, Shijiazhuang, Hebei 050018, PR China
| | - Nan Zhao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - Li He
- College of Environmental Science and Technology, Hebei University of Science & Technology, Shijiazhuang, Hebei 050018, PR China
| | - Jiansheng Cui
- College of Environmental Science and Technology, Hebei University of Science & Technology, Shijiazhuang, Hebei 050018, PR China.
| | - Weili Mao
- Department of Pharmacy, Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, Zhejiang 324000, PR China
| | - Hangbiao Jin
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China.
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