TY - JOUR

T1 - Polyethylene terephthalate and di-(2-ethylhexyl) phthalate in surface and core sediments of Bohai Bay, China

T2 - Occurrence and ecological risk

AU - Li, Xue

AU - Han, Xiaoxin

AU - Vogt, Rolf D.

AU - Zhou, Jiaying

AU - Zheng, Boyang

AU - Zhang, Yan

AU - Tu, Jianbo

AU - Song, Yutong

AU - Lu, Xueqiang

N1 - Funding Information: This work was financially supported by a project from the National Key Research and Development Program of China ( 2020YFC1909500 ) and a grant from Tianjin Science and Technology Bureau ( 18PTZWHZ00110 ). Publisher Copyright: © 2021 Elsevier Ltd

PY - 2022

Y1 - 2022

N2 - Bohai Bay, a typical semi-enclosed bay, is close to the Beijing-Tianjin-Hebei Region, the economic center of north China. The release of emerging contaminants was considerably increasing with the fast urbanization and industrialization along the coastline. However, such data, e.g. plastic polymers, are still limited. Here, polyethylene terephthalate (PET) and di-(2-ethylhexyl) phthalate (DEHP) in surface sediments and sediment cores from the coastal area of Bohai Bay were investigated. The ranges of PET and DEHP concentrations in surface sediments are 1.49–13.90 mg/kg and 0.23–19.26 mg/kg, respectively. The relatively high contents of PET and DEHP were found near the Haihe River estuary, indicating the importance of riverine input. The PET and DEHP profiles in the cores dated by the 210Pb method showed increasing trends with time. The PET in Bohai Bay was low risk evaluated by the potential ecological risk assessment. Low ecological risks of DEHP to the benthic organisms were found in the sediments, using the environmental risk limits, risk quotient, threshold effect level and probable effect level methods. The pollution levels of PET and DEHP in Bohai Bay obtained in this study may provide important data for making pollution control strategies.

AB - Bohai Bay, a typical semi-enclosed bay, is close to the Beijing-Tianjin-Hebei Region, the economic center of north China. The release of emerging contaminants was considerably increasing with the fast urbanization and industrialization along the coastline. However, such data, e.g. plastic polymers, are still limited. Here, polyethylene terephthalate (PET) and di-(2-ethylhexyl) phthalate (DEHP) in surface sediments and sediment cores from the coastal area of Bohai Bay were investigated. The ranges of PET and DEHP concentrations in surface sediments are 1.49–13.90 mg/kg and 0.23–19.26 mg/kg, respectively. The relatively high contents of PET and DEHP were found near the Haihe River estuary, indicating the importance of riverine input. The PET and DEHP profiles in the cores dated by the 210Pb method showed increasing trends with time. The PET in Bohai Bay was low risk evaluated by the potential ecological risk assessment. Low ecological risks of DEHP to the benthic organisms were found in the sediments, using the environmental risk limits, risk quotient, threshold effect level and probable effect level methods. The pollution levels of PET and DEHP in Bohai Bay obtained in this study may provide important data for making pollution control strategies.

KW - Bohai bay

KW - DEHP

KW - Ecological risk

KW - PET

KW - Sediment

U2 - 10.1016/j.chemosphere.2021.131904

DO - 10.1016/j.chemosphere.2021.131904

M3 - Journal article

C2 - 34418653

AN - SCOPUS:85112750517

VL - 286

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

IS - 3

M1 - 131904

ER -