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    Rights statement: © 2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial licence which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Persistent organic pollutants in ocean sediments from the North Pacific to the Arctic Ocean

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Persistent organic pollutants in ocean sediments from the North Pacific to the Arctic Ocean. / Ma, Yuxin ; Halsall, Crispin; Crosse, John et al.

In: Journal of Geophysical Research: Oceans, Vol. 120, No. 4, 04.2015, p. 2723-2735.

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Ma Y, Halsall C, Crosse J, Graf C, Cai M, He J et al. Persistent organic pollutants in ocean sediments from the North Pacific to the Arctic Ocean. Journal of Geophysical Research: Oceans. 2015 Apr;120(4):2723-2735. Epub 2015 Apr 11. doi: 10.1002/2014JC010651

Author

Ma, Yuxin ; Halsall, Crispin ; Crosse, John et al. / Persistent organic pollutants in ocean sediments from the North Pacific to the Arctic Ocean. In: Journal of Geophysical Research: Oceans. 2015 ; Vol. 120, No. 4. pp. 2723-2735.

Bibtex

@article{4ab2cb607ac747a19cefb550f344fb07,
title = "Persistent organic pollutants in ocean sediments from the North Pacific to the Arctic Ocean",
abstract = "Concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides (OC pesticides), and polybrominated diphenyl ethers (PBDEs) are reported in surficial sediments sampled along cruise transects from the Bering Sea to the central Arctic Ocean. OCs and PCBs all had significantly higher concentrations in the relatively shallow water (<500 m depth) of the Bering-Chukchi shelf areas (e.g., ΣPCB 286 ± 265 pg g−1 dw) compared to the deeper water regions (>500 m) of the Bering Sea and Arctic Ocean (e.g., Canada Basin ΣPCB 149 ± 102 pg g−1 dw). Concentrations were similar to, or slightly lower than, studies from the 1990s, indicating a lack of a declining trend. PBDEs (excluding BDE-209) displayed very low concentrations (e.g., range of median values, 3.5–6.6 pg/g dw). In the shelf areas, the sediments comprised similar proportions of silt and clay, whereas the deep basin sediments were dominated by clay, with a lower total organic carbon (TOC) content. While significant positive correlations were observed between persistent organic pollutant (POP) concentrations and TOC (Pearson correlation, r = 0.66–0.75, p <0.05), the lack of strong correlations, combined with differing chemical profiles between the sediments and technical formulations (and/or marine surface waters), indicate substantial chemical processing during transfer to the benthic environment. Marked differences in sedimentation rates between the shallow and deeper water regions are apparent (the ∼5 cm-depth grab samples collected here representing ∼100 years of accumulation for the shelf sediments and ∼1000 years for the deeper ocean regions), which may bias any comparisons. Nonetheless, the sediments of the shallower coastal arctic seas appear to serve as significant repositories for POPs deposited from surface waters.",
keywords = "Arctic, contaminants, benthic, particulate matter, POLYBROMINATED DIPHENYL ETHERS, AIR-WATER EXCHANGE, ORGANOCHLORINE PESTICIDES, POLYCHLORINATED-BIPHENYLS, CHUKCHI SEA, BERING-SEA, SURFACE SEDIMENTS, CANADA BASIN, PHYTOPLANKTON, FLUXES",
author = "Yuxin Ma and Crispin Halsall and John Crosse and Carola Graf and Minghong Cai and Jianfeng He and Guoping Gao and Kevin Jones",
note = "{\textcopyright} 2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.",
year = "2015",
month = apr,
doi = "10.1002/2014JC010651",
language = "English",
volume = "120",
pages = "2723--2735",
journal = "Journal of Geophysical Research: Oceans",
issn = "8755-8556",
publisher = "Wiley-Blackwell",
number = "4",

}

RIS

TY - JOUR

T1 - Persistent organic pollutants in ocean sediments from the North Pacific to the Arctic Ocean

AU - Ma, Yuxin

AU - Halsall, Crispin

AU - Crosse, John

AU - Graf, Carola

AU - Cai, Minghong

AU - He, Jianfeng

AU - Gao, Guoping

AU - Jones, Kevin

N1 - © 2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

PY - 2015/4

Y1 - 2015/4

N2 - Concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides (OC pesticides), and polybrominated diphenyl ethers (PBDEs) are reported in surficial sediments sampled along cruise transects from the Bering Sea to the central Arctic Ocean. OCs and PCBs all had significantly higher concentrations in the relatively shallow water (<500 m depth) of the Bering-Chukchi shelf areas (e.g., ΣPCB 286 ± 265 pg g−1 dw) compared to the deeper water regions (>500 m) of the Bering Sea and Arctic Ocean (e.g., Canada Basin ΣPCB 149 ± 102 pg g−1 dw). Concentrations were similar to, or slightly lower than, studies from the 1990s, indicating a lack of a declining trend. PBDEs (excluding BDE-209) displayed very low concentrations (e.g., range of median values, 3.5–6.6 pg/g dw). In the shelf areas, the sediments comprised similar proportions of silt and clay, whereas the deep basin sediments were dominated by clay, with a lower total organic carbon (TOC) content. While significant positive correlations were observed between persistent organic pollutant (POP) concentrations and TOC (Pearson correlation, r = 0.66–0.75, p <0.05), the lack of strong correlations, combined with differing chemical profiles between the sediments and technical formulations (and/or marine surface waters), indicate substantial chemical processing during transfer to the benthic environment. Marked differences in sedimentation rates between the shallow and deeper water regions are apparent (the ∼5 cm-depth grab samples collected here representing ∼100 years of accumulation for the shelf sediments and ∼1000 years for the deeper ocean regions), which may bias any comparisons. Nonetheless, the sediments of the shallower coastal arctic seas appear to serve as significant repositories for POPs deposited from surface waters.

AB - Concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides (OC pesticides), and polybrominated diphenyl ethers (PBDEs) are reported in surficial sediments sampled along cruise transects from the Bering Sea to the central Arctic Ocean. OCs and PCBs all had significantly higher concentrations in the relatively shallow water (<500 m depth) of the Bering-Chukchi shelf areas (e.g., ΣPCB 286 ± 265 pg g−1 dw) compared to the deeper water regions (>500 m) of the Bering Sea and Arctic Ocean (e.g., Canada Basin ΣPCB 149 ± 102 pg g−1 dw). Concentrations were similar to, or slightly lower than, studies from the 1990s, indicating a lack of a declining trend. PBDEs (excluding BDE-209) displayed very low concentrations (e.g., range of median values, 3.5–6.6 pg/g dw). In the shelf areas, the sediments comprised similar proportions of silt and clay, whereas the deep basin sediments were dominated by clay, with a lower total organic carbon (TOC) content. While significant positive correlations were observed between persistent organic pollutant (POP) concentrations and TOC (Pearson correlation, r = 0.66–0.75, p <0.05), the lack of strong correlations, combined with differing chemical profiles between the sediments and technical formulations (and/or marine surface waters), indicate substantial chemical processing during transfer to the benthic environment. Marked differences in sedimentation rates between the shallow and deeper water regions are apparent (the ∼5 cm-depth grab samples collected here representing ∼100 years of accumulation for the shelf sediments and ∼1000 years for the deeper ocean regions), which may bias any comparisons. Nonetheless, the sediments of the shallower coastal arctic seas appear to serve as significant repositories for POPs deposited from surface waters.

KW - Arctic

KW - contaminants

KW - benthic

KW - particulate matter

KW - POLYBROMINATED DIPHENYL ETHERS

KW - AIR-WATER EXCHANGE

KW - ORGANOCHLORINE PESTICIDES

KW - POLYCHLORINATED-BIPHENYLS

KW - CHUKCHI SEA

KW - BERING-SEA

KW - SURFACE SEDIMENTS

KW - CANADA BASIN

KW - PHYTOPLANKTON

KW - FLUXES

U2 - 10.1002/2014JC010651

DO - 10.1002/2014JC010651

M3 - Journal article

VL - 120

SP - 2723

EP - 2735

JO - Journal of Geophysical Research: Oceans

JF - Journal of Geophysical Research: Oceans

SN - 8755-8556

IS - 4

ER -