Biogeochemical Controls on PCB Accumulation in the East Siberian Arctic Shelf

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00143244" target="_blank" >RIV/00216224:14310/25:00143244 - isvavai.cz</a>

Výsledek na webu

<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JG008841" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JG008841</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2025JG008841" target="_blank" >10.1029/2025JG008841</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Biogeochemical Controls on PCB Accumulation in the East Siberian Arctic Shelf

Popis výsledku v původním jazyce

Climate change-induced increases in sea ice retreat and coastal erosion affect polar biogeochemical processes of persistent organic pollutants. This study investigated the distribution and fate of traditional and emerging Polychlorinated biphenyls (PCBs) in the sediments of the East Siberian Sea (ESS) and Chukchi Sea (CS). PCB 11 was the most dominant PCB congener detected in the sediments. PCB concentrations were higher in the open sea of the CS and along the ESS shelf break than in the ESS coastal region. Based on the correlation between PCB concentrations and total organic carbon (OC), as well as the result of the Positive Matrix Factorization model, the release of historical PCBs from eroded soils along the Siberian coast dominated in the ESS coastal region, whereas biogenic deposition of emerging PCBs prevailed in open sea areas. These findings highlight that the spatial heterogeneity of OC with varied origins determines the fates of PCBs in the high-latitude marginal seas.

Název v anglickém jazyce

Biogeochemical Controls on PCB Accumulation in the East Siberian Arctic Shelf

Popis výsledku anglicky

Climate change-induced increases in sea ice retreat and coastal erosion affect polar biogeochemical processes of persistent organic pollutants. This study investigated the distribution and fate of traditional and emerging Polychlorinated biphenyls (PCBs) in the sediments of the East Siberian Sea (ESS) and Chukchi Sea (CS). PCB 11 was the most dominant PCB congener detected in the sediments. PCB concentrations were higher in the open sea of the CS and along the ESS shelf break than in the ESS coastal region. Based on the correlation between PCB concentrations and total organic carbon (OC), as well as the result of the Positive Matrix Factorization model, the release of historical PCBs from eroded soils along the Siberian coast dominated in the ESS coastal region, whereas biogenic deposition of emerging PCBs prevailed in open sea areas. These findings highlight that the spatial heterogeneity of OC with varied origins determines the fates of PCBs in the high-latitude marginal seas.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES

ISSN

2169-8953

e-ISSN

2169-8961

Svazek periodika

130

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

001607114400001

EID výsledku v databázi Scopus

2-s2.0-105020931875