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Accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation
Urban stormwater typically enters sewer networks through gully pots, which allow a primary sedimentation of solids upstream of the piped network. The regular removal and disposal of retained sediment are necessary, costly and can involve environmental risks due to the contamination of sediments with...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10622363/ https://www.ncbi.nlm.nih.gov/pubmed/37776429 http://dx.doi.org/10.1007/s11356-023-30062-1 |
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author | Gavrić, Snežana Flanagan, Kelsey Wei, Haoyu Österlund, Heléne Lundy, Lian Viklander, Maria |
author_facet | Gavrić, Snežana Flanagan, Kelsey Wei, Haoyu Österlund, Heléne Lundy, Lian Viklander, Maria |
author_sort | Gavrić, Snežana |
collection | PubMed |
description | Urban stormwater typically enters sewer networks through gully pots, which allow a primary sedimentation of solids upstream of the piped network. The regular removal and disposal of retained sediment are necessary, costly and can involve environmental risks due to the contamination of sediments with substances from the urban environment such as metals. The concentrations and speciation of Cd, Cr, Cu, Ni, Pb and Zn were analysed in sediments from 26 gully pots located in different land use areas in Stockholm, Sweden. In addition, accumulation rates of both sediment and metal masses were evaluated, providing a basis for optimising maintenance practices and better understanding of impacts of characteristic urban land use types. Metal concentrations varied by at most a factor of eight between samples and were always below Swedish polluted site guidelines for less sensitive land use, with only eight samples exceeding the guideline values for Cu and Zn for sensitive land use. Sequential extraction showed Pb and Zn to be the most mobile metals. Sediment accumulation rates varied from 0.003 to 0.197 kg/m(2) impermeable surface/year. Metal accumulation rates were much more variable than metal concentrations, with a factor of up to 172 between the highest and lowest rates and the highest metal accumulation rates corresponding to the lower range of mass loads in road runoff. Differences in metal concentrations, sediment or metal mass accumulations could not be solely attributed to either traffic or catchment land use. In contrast, traction grit used for winter road maintenance, which has low (but detectable) metal concentrations, is identified as a major component of gully pot sediments, with a combined effect of both moderating metal concentrations and contributing to total mass. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11356-023-30062-1. |
format | Online Article Text |
id | pubmed-10622363 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-106223632023-11-04 Accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation Gavrić, Snežana Flanagan, Kelsey Wei, Haoyu Österlund, Heléne Lundy, Lian Viklander, Maria Environ Sci Pollut Res Int Research Article Urban stormwater typically enters sewer networks through gully pots, which allow a primary sedimentation of solids upstream of the piped network. The regular removal and disposal of retained sediment are necessary, costly and can involve environmental risks due to the contamination of sediments with substances from the urban environment such as metals. The concentrations and speciation of Cd, Cr, Cu, Ni, Pb and Zn were analysed in sediments from 26 gully pots located in different land use areas in Stockholm, Sweden. In addition, accumulation rates of both sediment and metal masses were evaluated, providing a basis for optimising maintenance practices and better understanding of impacts of characteristic urban land use types. Metal concentrations varied by at most a factor of eight between samples and were always below Swedish polluted site guidelines for less sensitive land use, with only eight samples exceeding the guideline values for Cu and Zn for sensitive land use. Sequential extraction showed Pb and Zn to be the most mobile metals. Sediment accumulation rates varied from 0.003 to 0.197 kg/m(2) impermeable surface/year. Metal accumulation rates were much more variable than metal concentrations, with a factor of up to 172 between the highest and lowest rates and the highest metal accumulation rates corresponding to the lower range of mass loads in road runoff. Differences in metal concentrations, sediment or metal mass accumulations could not be solely attributed to either traffic or catchment land use. In contrast, traction grit used for winter road maintenance, which has low (but detectable) metal concentrations, is identified as a major component of gully pot sediments, with a combined effect of both moderating metal concentrations and contributing to total mass. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11356-023-30062-1. Springer Berlin Heidelberg 2023-09-30 2023 /pmc/articles/PMC10622363/ /pubmed/37776429 http://dx.doi.org/10.1007/s11356-023-30062-1 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Research Article Gavrić, Snežana Flanagan, Kelsey Wei, Haoyu Österlund, Heléne Lundy, Lian Viklander, Maria Accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation |
title | Accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation |
title_full | Accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation |
title_fullStr | Accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation |
title_full_unstemmed | Accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation |
title_short | Accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation |
title_sort | accumulation and contamination of gully pot sediments from varied land-use types: metal loads, concentrations and speciation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10622363/ https://www.ncbi.nlm.nih.gov/pubmed/37776429 http://dx.doi.org/10.1007/s11356-023-30062-1 |
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