AI Article Synopsis
- * The study found that Nile Perch from the open lake had higher stable nitrogen isotope values, indicating a higher trophic level, and significantly higher concentrations of PFASs and mercury in comparison to nearshore samples.
- * While the estimated human intake of PFOS from fish was below international limits, consumption of MeHg from the fish exceeded the US EPA reference dose, raising potential health concerns.
Article Abstract
There is an acute deficit of data on per- and polyfluoroalkyl substances (PFASs) and mercury (Hg) in the open waters of Lake Victoria, East Africa, relative to nearshore areas. We analyzed stable isotopes (δN and δC), PFASs and Hg in Nile Perch and Nile Tilapia muscle and liver samples from nearshore and open lake locations from the Ugandan part of the lake. The δN values of Nile Perch muscle indicated a higher trophic level for samples from the open lake than from nearshore locations. Averages of ∑PFAS concentrations in Nile Perch muscle and liver (0.44 and 1.75 ng/g ww, respectively) were significantly higher than in Nile Tilapia (0.24 and 0.50 ng/g ww, respectively). ∑PFAS concentrations in muscle of open lake Nile Perch were significantly higher than for nearshore samples. A similar observation was made for total mercury concentrations in muscle (THg) of Nile Perch. THg was dominated by methyl mercury (MeHg, 22-124 ng/g ww) and mercuric mercury (Hg,
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http://dx.doi.org/10.1016/j.chemosphere.2020.127536 DOI Listing Publication Analysis
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