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Micro litter in the urban environment: sampling and analysis of undisturbed snow
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
Luleå University of Technology, External.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
2019 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Micro litter was analysed in undisturbed urban snow samples from six sites in the Town of Luleå, Northern Sweden and one control/reference site in the rural areas outside the city. All samples were taken through the whole snow depth, 72-106 cm deep and 107/8 days old, using a snow core sampler. The snow samples were melted, filtered consecutively on 300 and 50 µm filters, and finally analysis of micro litter particles on the filters were counted and categorised under a microscope. The categories were natural and synthetic fibres, plastic fragments, black rubber and other anthropogenic black particles. The results showed that fibres were in the same order of magnitude in the snow as in untreated wastewater and atmospheric fallout. Rubber particles were only detected in snow from the sites near trafficked roads indicating that this size range of rubber does not transport very far. Combustion particles were detected in the highest concentration in all samples. These are proposed to originate from traffic (central sites) and wood burning (residential sites). Plastic fragments were the least detected category in this study corresponding to only a few items per litre of melted snow.

Place, publisher, year, edition, pages
2019.
National Category
Engineering and Technology
Research subject
Urban Water Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-77479OAI: oai:DiVA.org:ltu-77479DiVA, id: diva2:1387661
Conference
Novatech 2019 10th international conference
Available from: 2020-01-22 Created: 2020-01-22 Last updated: 2020-04-28

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