POPs distribution in coastal permafrost soils at Komakuk Beach (Yukon, CA)
The extensive work in AMAP on Arctic contamination by Persistent Organic Pollutants (POPs) illustrates the strong state of knowledge and data on contaminants in biota and water, but also highlights a stark data gap regarding contaminants in Arctic soils, particularly below the permafrost table. Here...
Main Author: | |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
2022
|
Subjects: | |
Online Access: | https://zenodo.org/record/6594011 https://doi.org/10.5281/zenodo.6594011 |
id |
ftzenodo:oai:zenodo.org:6594011 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:6594011 2023-05-15T13:21:37+02:00 POPs distribution in coastal permafrost soils at Komakuk Beach (Yukon, CA) Rachele Lodi 2022-12-14 https://zenodo.org/record/6594011 https://doi.org/10.5281/zenodo.6594011 unknown info:eu-repo/grantAgreement/EC/H2020/773421/ doi:10.5281/zenodo.6594010 https://zenodo.org/record/6594011 https://doi.org/10.5281/zenodo.6594011 oai:zenodo.org:6594011 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode POPs permafrost info:eu-repo/semantics/lecture presentation 2022 ftzenodo https://doi.org/10.5281/zenodo.659401110.5281/zenodo.6594010 2023-03-10T23:40:51Z The extensive work in AMAP on Arctic contamination by Persistent Organic Pollutants (POPs) illustrates the strong state of knowledge and data on contaminants in biota and water, but also highlights a stark data gap regarding contaminants in Arctic soils, particularly below the permafrost table. Here, we describe the work carried out on analyses and scaling of contaminants. A key aspect for being able to deliver geospatial databases is identifying which landscape properties we can use to scale the measured contaminant levels. Soils in the Canadian study area at Komakuk Beach (Yukon, CA) have been sampled and analysed for hexachlorobenzene (HCB), 54 polychlorinated biphenyl congeners (PCBs) and 22 individual polycyclic aromatic hydrocarbons (PAHs) in 89 active layer and permafrost core samples. The concentrations have been determined by using Thermo Scientific Dionex ASE 350 and Trace 1310 GC coupled with TSQ9000 TQMS, Thermo Scientific, at CNR-ISP Venice, Italy. The statistical parameters of data on HCB concentrations describe its scarce presence, with limited occurrences linked to the organic rich soil horizons. Overall, Σ54PCBs in soils collected in the catchment area were in the range from 0 to 5.33 pg/g. Both the content of individual PAHs and their total concentration vary widely from 0 to 121ng/g. The contribution of individual PAHs to the total amount is not the same and depends on the concentration of heavy 5–6-nuclear polyarenes and mainly 6-nuclear benzo[ghi]perylene. Our results show that the vertical distribution patterns of light 2–4-nuclear and heavy 5–6-nuclear PAHs are differentiated. Every class of OC is present in the deeper permafrost core portions only in High Centre Polygon (HCP) landform class, highlighting the role of hydrology and percolation in the contaminant distribution in permafrost soils and how these variables are enhanced in (semi-)degraded permafrost landforms. The model equations have been applied on the carbon content prediction maps for each study area, to export a first ... Conference Object AMAP Arctic permafrost Yukon Zenodo Arctic Yukon Komakuk Beach ENVELOPE(-140.157,-140.157,69.601,69.601) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
POPs permafrost |
spellingShingle |
POPs permafrost Rachele Lodi POPs distribution in coastal permafrost soils at Komakuk Beach (Yukon, CA) |
topic_facet |
POPs permafrost |
description |
The extensive work in AMAP on Arctic contamination by Persistent Organic Pollutants (POPs) illustrates the strong state of knowledge and data on contaminants in biota and water, but also highlights a stark data gap regarding contaminants in Arctic soils, particularly below the permafrost table. Here, we describe the work carried out on analyses and scaling of contaminants. A key aspect for being able to deliver geospatial databases is identifying which landscape properties we can use to scale the measured contaminant levels. Soils in the Canadian study area at Komakuk Beach (Yukon, CA) have been sampled and analysed for hexachlorobenzene (HCB), 54 polychlorinated biphenyl congeners (PCBs) and 22 individual polycyclic aromatic hydrocarbons (PAHs) in 89 active layer and permafrost core samples. The concentrations have been determined by using Thermo Scientific Dionex ASE 350 and Trace 1310 GC coupled with TSQ9000 TQMS, Thermo Scientific, at CNR-ISP Venice, Italy. The statistical parameters of data on HCB concentrations describe its scarce presence, with limited occurrences linked to the organic rich soil horizons. Overall, Σ54PCBs in soils collected in the catchment area were in the range from 0 to 5.33 pg/g. Both the content of individual PAHs and their total concentration vary widely from 0 to 121ng/g. The contribution of individual PAHs to the total amount is not the same and depends on the concentration of heavy 5–6-nuclear polyarenes and mainly 6-nuclear benzo[ghi]perylene. Our results show that the vertical distribution patterns of light 2–4-nuclear and heavy 5–6-nuclear PAHs are differentiated. Every class of OC is present in the deeper permafrost core portions only in High Centre Polygon (HCP) landform class, highlighting the role of hydrology and percolation in the contaminant distribution in permafrost soils and how these variables are enhanced in (semi-)degraded permafrost landforms. The model equations have been applied on the carbon content prediction maps for each study area, to export a first ... |
format |
Conference Object |
author |
Rachele Lodi |
author_facet |
Rachele Lodi |
author_sort |
Rachele Lodi |
title |
POPs distribution in coastal permafrost soils at Komakuk Beach (Yukon, CA) |
title_short |
POPs distribution in coastal permafrost soils at Komakuk Beach (Yukon, CA) |
title_full |
POPs distribution in coastal permafrost soils at Komakuk Beach (Yukon, CA) |
title_fullStr |
POPs distribution in coastal permafrost soils at Komakuk Beach (Yukon, CA) |
title_full_unstemmed |
POPs distribution in coastal permafrost soils at Komakuk Beach (Yukon, CA) |
title_sort |
pops distribution in coastal permafrost soils at komakuk beach (yukon, ca) |
publishDate |
2022 |
url |
https://zenodo.org/record/6594011 https://doi.org/10.5281/zenodo.6594011 |
long_lat |
ENVELOPE(-140.157,-140.157,69.601,69.601) |
geographic |
Arctic Yukon Komakuk Beach |
geographic_facet |
Arctic Yukon Komakuk Beach |
genre |
AMAP Arctic permafrost Yukon |
genre_facet |
AMAP Arctic permafrost Yukon |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/773421/ doi:10.5281/zenodo.6594010 https://zenodo.org/record/6594011 https://doi.org/10.5281/zenodo.6594011 oai:zenodo.org:6594011 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.659401110.5281/zenodo.6594010 |
_version_ |
1766360569340755968 |