Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils?
As global warming intensifies, there will be increased uncertainty as to the environmental behavior and risks from heavy metals in industrial/legacy contaminated sites in permafrost regions. Bioavailability has been increasingly used for human health risk assessment of heavy metals in contaminated s...
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2023
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ftulancaster:oai:eprints.lancs.ac.uk:177938 2023-08-27T04:11:32+02:00 Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? Sun, Yiming Jones, Kevin C Sun, Zongquan Shen, Jialun Ma, Fujun Gu, Qingbao 2023-01-01 text https://eprints.lancs.ac.uk/id/eprint/177938/ https://eprints.lancs.ac.uk/id/eprint/177938/1/Sun_et_al_Revised_manuscript_YM0810.pdf https://doi.org/10.1016/j.scitotenv.2022.158453 en eng https://eprints.lancs.ac.uk/id/eprint/177938/1/Sun_et_al_Revised_manuscript_YM0810.pdf Sun, Yiming and Jones, Kevin C and Sun, Zongquan and Shen, Jialun and Ma, Fujun and Gu, Qingbao (2023) Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? Science of the Total Environment, 854. ISSN 0048-9697 creative_commons_attribution_noncommercial_noderivatives_4_0_international_license Journal Article PeerReviewed 2023 ftulancaster https://doi.org/10.1016/j.scitotenv.2022.158453 2023-08-03T22:42:17Z As global warming intensifies, there will be increased uncertainty as to the environmental behavior and risks from heavy metals in industrial/legacy contaminated sites in permafrost regions. Bioavailability has been increasingly used for human health risk assessment of heavy metals in contaminated soils. Soil heavy metal bioavailability depends on soil physicochemical properties, and freeze-thaw affects soil physical, chemical and biological processes. However it is not clear whether freeze-thaw has an effect on the bioavailability of soil heavy metals. In this study, soils contaminated with Pb and As were collected from 10 industrial sites in northeast China. Extractability and bioavailability of soil Pb and As were determined by the Tessier sequential extraction method and four in vitro gastron-intestinal simulation methods under control and freeze-thaw treatments. The aims were: to compare the results of extraction and bioavailability from laboratory experiments which artificially simulate freeze-thaw conditions against control soils; to explore the correlation between bioavailability of Pb/As and soil properties. Freeze-thaw significantly decreased soil pH, and increased the soil weight surface area. Freeze-thaw decreased the percentage in the residual fraction, and increased the percentage of Pb and As in the exchangeable fraction, carbonate-bound fraction, Fe-Mn oxides-bound fraction and organic-bound fraction, relative to control soils. Freeze-thaw significantly increased Pb and As bioavailability compared to the controls. Pb and As released in the gastric phase of the four methods was significantly higher than that in the intestinal phase. Further analysis of correlations between Pb and As bioavailability and soil properties indicated that total concentrations of Al, Fe and Mn, particle size, and weight surface area significantly correlated to Pb and As bioavailability. Overall, this study demonstrated that freeze-thaw did influence the bioavailability of soil heavy metals. It suggests the freeze-thaw ... Article in Journal/Newspaper permafrost Lancaster University: Lancaster Eprints Science of The Total Environment 854 158453 |
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Lancaster University: Lancaster Eprints |
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ftulancaster |
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English |
description |
As global warming intensifies, there will be increased uncertainty as to the environmental behavior and risks from heavy metals in industrial/legacy contaminated sites in permafrost regions. Bioavailability has been increasingly used for human health risk assessment of heavy metals in contaminated soils. Soil heavy metal bioavailability depends on soil physicochemical properties, and freeze-thaw affects soil physical, chemical and biological processes. However it is not clear whether freeze-thaw has an effect on the bioavailability of soil heavy metals. In this study, soils contaminated with Pb and As were collected from 10 industrial sites in northeast China. Extractability and bioavailability of soil Pb and As were determined by the Tessier sequential extraction method and four in vitro gastron-intestinal simulation methods under control and freeze-thaw treatments. The aims were: to compare the results of extraction and bioavailability from laboratory experiments which artificially simulate freeze-thaw conditions against control soils; to explore the correlation between bioavailability of Pb/As and soil properties. Freeze-thaw significantly decreased soil pH, and increased the soil weight surface area. Freeze-thaw decreased the percentage in the residual fraction, and increased the percentage of Pb and As in the exchangeable fraction, carbonate-bound fraction, Fe-Mn oxides-bound fraction and organic-bound fraction, relative to control soils. Freeze-thaw significantly increased Pb and As bioavailability compared to the controls. Pb and As released in the gastric phase of the four methods was significantly higher than that in the intestinal phase. Further analysis of correlations between Pb and As bioavailability and soil properties indicated that total concentrations of Al, Fe and Mn, particle size, and weight surface area significantly correlated to Pb and As bioavailability. Overall, this study demonstrated that freeze-thaw did influence the bioavailability of soil heavy metals. It suggests the freeze-thaw ... |
format |
Article in Journal/Newspaper |
author |
Sun, Yiming Jones, Kevin C Sun, Zongquan Shen, Jialun Ma, Fujun Gu, Qingbao |
spellingShingle |
Sun, Yiming Jones, Kevin C Sun, Zongquan Shen, Jialun Ma, Fujun Gu, Qingbao Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? |
author_facet |
Sun, Yiming Jones, Kevin C Sun, Zongquan Shen, Jialun Ma, Fujun Gu, Qingbao |
author_sort |
Sun, Yiming |
title |
Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? |
title_short |
Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? |
title_full |
Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? |
title_fullStr |
Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? |
title_full_unstemmed |
Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? |
title_sort |
does freeze-thaw action affect the extractability and bioavailability of pb and as in contaminated soils? |
publishDate |
2023 |
url |
https://eprints.lancs.ac.uk/id/eprint/177938/ https://eprints.lancs.ac.uk/id/eprint/177938/1/Sun_et_al_Revised_manuscript_YM0810.pdf https://doi.org/10.1016/j.scitotenv.2022.158453 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://eprints.lancs.ac.uk/id/eprint/177938/1/Sun_et_al_Revised_manuscript_YM0810.pdf Sun, Yiming and Jones, Kevin C and Sun, Zongquan and Shen, Jialun and Ma, Fujun and Gu, Qingbao (2023) Does freeze-thaw action affect the extractability and bioavailability of Pb and As in contaminated soils? Science of the Total Environment, 854. ISSN 0048-9697 |
op_rights |
creative_commons_attribution_noncommercial_noderivatives_4_0_international_license |
op_doi |
https://doi.org/10.1016/j.scitotenv.2022.158453 |
container_title |
Science of The Total Environment |
container_volume |
854 |
container_start_page |
158453 |
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1775354428503621632 |