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Alps at risk: High-mountain lakes as reservoirs of persistent and emerging contaminants
Journal of Contaminant Hydrology2024
16 citations
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Score: 60
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Paolo Pastorino
Paolo Pastorino
Paolo Pastorino
Damià Barceló,
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Paolo Pastorino
Paolo Pastorino
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Paolo Pastorino
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Paolo Pastorino
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Paolo Pastorino
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Damià Barceló,
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Paolo Pastorino
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Paolo Pastorino
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Marino Prearo,
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Paolo Pastorino
Paolo Pastorino
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Paolo Pastorino
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Paolo Pastorino
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Paolo Pastorino
Paolo Pastorino
Paolo Pastorino
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Paolo Pastorino
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Paolo Pastorino
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Paolo Pastorino
Marino Prearo,
Marino Prearo,
Damià Barceló,
Paolo Pastorino
Marino Prearo,
Damià Barceló,
Marino Prearo,
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Paolo Pastorino
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Paolo Pastorino
Summary
Researchers reviewed contamination of high-mountain lakes in the Alps and found these remote lakes contain persistent organic pollutants, pharmaceuticals, and microplastics despite being far from direct human activity. The pollutants arrive through atmospheric transport and snowmelt, making even the most isolated water bodies vulnerable. These findings are concerning because mountain lakes feed rivers that supply drinking water to millions of people in Europe.
Despite their remote locations, high-mountain lakes located in the Alps are vulnerable to chemical pollution. This discussion explores the important aspects of these lakes as repositories of Persistent Organic Pollutants (POPs) and Contaminants of Emerging Concern (CECs), elucidating their sources and implications for both the environment and human health. In terms of the presence of POPs in high-altitude lakes of the Alps, 14 studies have been identified examining the occurrence of polychlorinated biphenyls, dichlorodiphenyltrichloroethane an its metabolites, polybrominated diphenyl ethers, and polycyclic aromatic hydrocarbons. The bulk of research on POPs in high-mountain lakes is concentrated in the Italian Alps (63%), followed by Switzerland (22%), Austria (12%), and France (3%), respectively. Sediment is predominantly investigated (65%), followed by fish (33%) and water (2%). Similarly, in relation to the presence of CECs in high-mountain lakes of the Alps, six studies have been identified investigating the occurrence of musks, perfluorinated compounds, and microplastics. Investigations into CECs predominantly occur in Switzerland (42%), France (33%), and Italy (25%), with fish samples (muscle and liver) being the primary focus (46%), followed by sediment (17%) and water (17%). Other compartments like zooplankton, frog/tadpoles, and snow remain less explored. The discussion also shed light on various pathways through which pollutants reach these remote landscapes, including atmospheric transport, glacial meltwater, and human activities. Protecting these pristine peaks demands concerted efforts encompassing ongoing research, vigilant monitoring, and dedicated conservation initiatives.