Work

Target and non-target screening of poly- and perfluoroalkyl substances (PFAS) in fish liver samples from the River Nile in Sudan: A baseline assessment

Year: 2024

Type: article

Abstract: Poly- and perfluoroalkyl substances (PFAS) are of global concern due to their persistence and harmful effects on human health and ecosystems. However, research on PFAS in the River Nile and across Africa is limited. This study provides the first assessment of PFAS contamination in fish livers from the River Nile in Sudan, using ultra-high-performance liquid chromatography and high-resolution mass spectrometry. Perfluorooctane sulfonate (PFOS), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), and perfluoroundecanoic acid (PFUnDA) were measured, with fish downstream of Jebel Aulia Dam showing the highest concentrations: PFOS at 331 ± 36 μg/kg wet weight (ww), PFNA at 143 ± 4 μg/kg ww, PFDA at 137 ± 12 μg/kg ww, and PFUnDA at 4.0 μg/kg ww. In contrast, fish from other locations, including local markets, had undetectable PFAS levels. Three additional PFAS were tentatively identified. These results emphasize the need for further monitoring to address PFAS contamination and related food safety risks in the region. • First assessment of PFAS contamination in fish from the River Nile, Sudan • Thirteen PFAS compounds detected; four tentatively identified. • Fish downstream of Jebel Aulia Dam exceeded safety thresholds. • Fish from local markets showed no measurable PFAS levels.

Source: Marine Pollution Bulletin

DOI: 10.1016/j.marpolbul.2024.117388

Authors: Camilla Kirkeli, Stig Valdersnes, Aasim M. Ali

Institutions: University of Bergen, Norwegian Institute of Marine Research

Language: English

Topic: Per- and polyfluoroalkyl substances research

Subfield: Environmental Chemistry

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Good health and well-being

Open Access status: hybrid

Estimated APC paid: $3,630