J 2023

Sources of polychlorinated biphenyls (PCBs) in sediments of the East China marginal seas: Role of unintentionally-produced PCBs

YU, Huimin; Tian LIN; Limin HU; Gerhard LAMMEL; Shizhen ZHAO et al.

Základní údaje

Originální název

Sources of polychlorinated biphenyls (PCBs) in sediments of the East China marginal seas: Role of unintentionally-produced PCBs

Autoři

YU, Huimin; Tian LIN; Limin HU; Gerhard LAMMEL; Shizhen ZHAO; Xueshi SUN; Xiao WU a Zhigang GUO

Vydání

Environmental Pollution, OXFORD, OXON, ENGLAND, ELSEVIER SCI LTD, 2023, 0269-7491

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 7.600

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/23:00133139

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

Polychlorinated biphenyls; Long-range atmospheric transport; Riverine input; East China marginal seas; Unintentionally-produced PCBs

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 22. 1. 2024 19:48, Mgr. Michaela Hylsová, Ph.D.

Anotace

V originále

The production and use of intentionally-produced polychlorinated biphenyls (PCBs) in China have a short history compared with countries of North America and Europe, where technical PCB mixtures were manufactured in large amounts for decades before being banned. Unintentionally-produced PCB emissions increased dramatically in China, leading to unique profiles of PCB burdens. This study first time evaluated 208 individual PCB congeners at 94 sites from surface sediments of the East China Marginal Seas (ECMSs) and explored their sources. Non-technical PCBs transported from atmospheric transport and river discharge played a dominant role in most areas of the ECMSs, while historical residuals of technical PCBs occupied the fine-grained sediments in muddy areas of the central Yellow Sea (YS), regarding to the low sedimentation rate in the central YS. Furthermore, emissions from Taizhou located on the coast of the East China Sea (ECS), which is an important electronic waste dismantling site in East China, contributed additional technical PCBs to the inner shelf of the ECS. Our results indicate that non-technical PCBs have become the dominant PCB species in the ECMSs, and emphasize the synergistic effects of large riverine input, long-range atmospheric transport, and muddy shelf deposition on PCB source and sink of in marginal seas.