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Sediment quality of lake Seealpsee: presence of micro-plastics and tire associated chemicals, ecotoxicological and biological assessments
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Researchers assessed sediment quality in Lake Seealpsee in Switzerland by measuring microplastic concentrations and tire-associated chemicals at two sites, and conducting ecotoxicological ostracod tests to evaluate potential biological effects of the contaminants.
The water protection service of the Canton of Appenzell Innerrhoden mandated the Ecotox Cen-tre for measuring microplastics in sediment samples collected at two different sites of Lake Seealpsee and performing in parallel an ecotoxicological test (ostracod test) on these samples. The Ecotox Centre complemented the investigations of these sites with measurements of tire associated chemicals in the sediment samples and examination of in situ oligochaete communi-ties. Sediment chemical analyses showed some microplastics pollution and the presence of some tire associated chemicals in significant concentrations. The sources of this pollution could be both the atmospheric dust and the recreational activities around the lake. The results of the biological and ecotoxicological investigations indicated that the quality of sediments was altered, due to the presence of contaminants and/or to a eutrophication.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.