We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Observational Study Unveils the Extensive Presence of Hazardous Elements in Beached Plastics from Lake Geneva
AI summary Read the abstract
Researchers analysed over 670 plastic samples collected from 12 beaches around Lake Geneva using portable XRF spectrometry, revealing high concentrations of hazardous elements including lead (up to 23,500 ppm), cadmium (up to 6,760 ppm), mercury (up to 810 ppm), and bromine (up to 27,400 ppm as a flame-retardant proxy) in beached plastics. The high abundance of restricted substances reflects the age and long residence time of plastics in the lake system.
Over 3000 samples of plastic litter have been retrieved from twelve pebble beaches around the shores of Lake Geneva. The plastic stock consisted of identifiable objects of various size and colour, including bottles, bottle tops, cotton buds, pens, toys and straws, an heterogeneous assortment of fragments whose origin was either discernible or unknown, and pieces or blocks of expanded polymer (polystyrene or polyurethane foam). Analysis of 670 samples by portable x-ray fluorescence (XRF) spectrometry revealed high concentrations of hazardous elements or compounds among many plastics. These included Cd, Hg and Pb (with maximum concentrations of 6760, 810 and 23,500 ppm, respectively) as stabilisers in PVC-based materials and/or brightly-coloured sulphide or chromate pigments in primary and secondary plastics, and Br (with a maximum concentration of 27,400 ppm) as a proxy for brominated flame retardants in both plastics and foams. The abundance of hazardous elements in beached plastics that have been restricted or banned reflect the age and residence time of the plastic stock in the lake, coupled with a relatively high length of shoreline to surface area of the system. The migratability of hazardous elements from the polymeric matrix is likely to determine their environmental impacts and is recommended as a future area of research.
More Papers Like This
What the presence of regulated chemical elements in beached lacustrine plastics can tell us: the case of Swiss lakes
AI summary Read the abstract
Researchers analyzed 3,880 beached plastic items from 39 Swiss lake beaches for hazardous chemical elements including arsenic, cadmium, lead, and mercury using X-ray fluorescence. Many plastics contained regulated levels of toxic elements, showing that beached plastics are not only a physical pollution problem but also a chemical contamination hazard.
Pollution due to Plastics and Microplastics in Lake Geneva
AI summary Read the abstract
Lake Geneva was found to be contaminated with diverse microplastic particles including primary pellets and secondary fragments, with floating microplastics confirmed to adsorb polychlorinated biphenyls (PCBs). The study highlights both the widespread presence of microplastics in freshwater environments and the need for improved beach sampling methodologies.
Plastic pollution in Swiss surface waters: nature and concentrations, interaction with pollutants
AI summary Read the abstract
Researchers surveyed microplastic pollution in Swiss surface waters including multiple lakes and rivers. The study confirmed the presence of microplastics in Swiss freshwater environments and investigated interactions between microplastics and chemical pollutants, expanding the data on freshwater microplastic contamination beyond the initial findings from Lake Geneva.
Characterization of plastic debris and association of metals with microplastics in coastline sediment along the Persian Gulf
AI summary Read the abstract
Microplastics and sediment samples from Persian Gulf coastlines were found to contain elevated concentrations of heavy metals including lead, cadmium, and mercury, with metals associated with both the plastic surfaces and the surrounding sediment. The study demonstrates that microplastics in this industrialized coastal region accumulate hazardous metals that can be transferred to marine organisms.
Identification of microplastics and inorganic contaminants adsorbed on microplastics collected on the beaches of Ilha Grande
AI summary Read the abstract
Researchers characterized microplastics collected from beaches on Ilha Grande — a protected island in Brazil — and used advanced spectroscopic techniques to identify toxic inorganic contaminants adsorbed onto the plastic surfaces, including arsenic, cadmium, mercury, nickel, lead, and tin. The study confirms that microplastics on beaches are not only a physical hazard but also act as concentrators and carriers of heavy metals, compounding their environmental and human health risks. The findings call for future quantification studies to better understand contamination levels in this ecologically sensitive area.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.