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Detection and characterisation of microplastics in lake sediments: A study in the Zagreb region

Zenodo (CERN European Organization for Nuclear Research) 2024 Score: 35 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Lara Mikac, Lara Mikac, Lara Mikac, Lara Mikac, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Stefania Piarulli, Lara Mikac, Lara Mikac, Andy M. Booth Andy M. Booth Andy M. Booth Andy M. Booth, Andy M. Booth Andy M. Booth, Andy M. Booth, Andy M. Booth, Andy M. Booth Andy M. Booth, Andy M. Booth, Andy M. Booth Stefania Piarulli, Andy M. Booth, Andy M. Booth, Andy M. Booth, Andy M. Booth Andy M. Booth, Andy M. Booth, Stefania Piarulli, Andy M. Booth Andy M. Booth, Andy M. Booth, Stefania Piarulli, Mile Ivanda, Mile Ivanda, Mile Ivanda, Andy M. Booth Andy M. Booth Andy M. Booth, Mile Ivanda, Lara Mikac, Stefania Piarulli, Andy M. Booth, Andy M. Booth Mile Ivanda, Lara Mikac, Mile Ivanda, Stefania Piarulli, Mile Ivanda, Mile Ivanda, Andy M. Booth, Andy M. Booth, Andy M. Booth Andy M. Booth Andy M. Booth, Andy M. Booth

Summary

Researchers analyzed microplastics in sediment samples from four lakes in the Zagreb region of Croatia using density separation with zinc chloride and micro-Raman spectroscopy with a mapping function to quantify and characterize particles. They found microplastics in all lake sediments at concentrations between 113,000 and 764,000 particles per kg of sediment, with polystyrene, polyethylene, polyethylene terephthalate, polypropylene, and nylon as predominant polymers and the majority of particles in the 5 to 10 micrometer size range.

Polymers

PE PET PP PS nylon

Study Type Environmental

Microplastics (MPs) pose a significant threat to terrestrial and aquatic ecosystems due to their widespread distribution and persistence. This study analyses the presence, types and quantities of MPs in lake sediments in the Zagreb region of Croatia. Sediment samples were collected from four lakes and subjected to density separation (ZnCl2) and filtration (5 µm filters) to isolate MP particles. Micro-Raman spectroscopy with a mapping function was used to quantify and characterise the MPs, which revealed that the predominant polymer types were polystyrene, polyethylene, polyethylene terephthalate, polypropylene and nylon (Fig. 1). The results show that MPs were present in all lake sediments and their total number was between 113,000 and 764,000 MP kg-1 of sediment. The majority of the MPs were in the range of 5 to 10 µm (i.e. small MP). These results highlight the widespread presence of MPs in inland waters and emphasise the need for further research and effective strategies to combat MP pollution. Understanding the occurrence and characteristics of MPs in lake sediments is crucial for the protection of freshwater ecosystems and their associated biota. This study provides insights into the landscape of MP pollution, sheds light on previously understudied regions and provides clues for future research and protection measures. Also see: https://micro2024.sciencesconf.org/556184/document

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