Perfluoroalkyl substances in freshwater and marine fish from northern Vietnam: Accumulation levels, profiles, and implications for human consumption

• Published in: Marine pollution bulletin 2022-09, Vol.182, p.113995-113995, Article 113995
• Main Authors: Vi, Phung Thi, Ngoc, Nguyen Thuy, Quang, Phan Dinh, Dam, Nguyen Thanh, Tue, Nguyen Minh, Tuyen, Le Huu, Viet, Pham Hung, Anh, Duong Hong
• Format: Article
• Language: English
• Subjects: Freshwater fish; Marine fish; Perfluoroalkyl substances; Risk assessment; Vietnam
• ISSN: 0025-326X; 1879-3363
• DOI: 10.1016/j.marpolbul.2022.113995

The accumulation profiles of nine perfluoroalkyl substances (PFASs) were determined in 95 muscle samples of seven freshwater (n = 65) and seven marine (n = 30) fish species collected in Northern Vietnam. In both groups of fish, perfluorooctane sulfonic acid (PFOS) was the most prevalent component, accounting for roughly 29 % of total PFASs. The total PFASs in freshwater fish species ranged from 0.08 to 8.06 ng/g wet weight (w.w), with the highest concentration found in topmouth culter (7.01 ± 1.23 ng/g w.w). In marine fish, the highest mean concentration of PFASs was detected in Asian sea bass (2.75 ± 0.54 ng/g, w.w). Estimation on the human dietary intake of PFASs from fish consumption resulted in hazard ratios (HR) ranging from 0.019 to 0.238 for freshwater fish and from 0.016 to 0.074 for marine fish, indicating low exposure risks associated with PFASs. •PFOS was the most prevalent in both freshwater fish and marine fish.•The freshwater topmouth culter and marine Asian sea bass had highest PFAS levels.•All hazard ratio values indicated low exposure risks.