TY - JOUR
T1 - Source, fate and budget of Dechlorane Plus (DP) in a typical semi-closed sea, China
AU - Zhen, Xiaomei
AU - Li, Yanfang
AU - Wang, Xinming
AU - Liu, Lin
AU - Li, Yanan
AU - Tian, Chongguo
AU - Pan, Xiaohui
AU - Fang, Yin
AU - Tang, Jianhui
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/1/15
Y1 - 2021/1/15
N2 - Dechlorane Plus (DP), which has severe effects on marine ecosystems, has been proposed for listing under the Stockholm Convention as a persistent organic pollutant (POPs). This study was the first comprehensive investigation of the concentration and fate of DP in the Bohai Sea (BS) based on determination of river estuary water, river estuary sediment, surface seawater, bottom seawater, and sea sediments samples. The highest water DP levels were found in river estuary in Tianjin in North China due to the huge usage of DP in recent years, and spatial distribution analysis indicates it was mainly affected by regional high urbanization and emission of E-waste. The spatial distribution of DP in the BS was mainly affected by a combination of coastal hydrodynamics and land anthropogenic activities. On the basis of multi-box mass balance, simulations of DP in seawater showed an increase from 2014 to 2025, before leveling off at 184 pg L −1 by a constant DP input to the BS. Riverine discharge almost contributed to the total input (∼99%) and dominated the DP levels in the BS. Degradation of DP accounted for 55.3% and 78.1% of total DP output in seawater and sediment, respectively, indicating that degradation mainly affected decline of DP in the environment.
AB - Dechlorane Plus (DP), which has severe effects on marine ecosystems, has been proposed for listing under the Stockholm Convention as a persistent organic pollutant (POPs). This study was the first comprehensive investigation of the concentration and fate of DP in the Bohai Sea (BS) based on determination of river estuary water, river estuary sediment, surface seawater, bottom seawater, and sea sediments samples. The highest water DP levels were found in river estuary in Tianjin in North China due to the huge usage of DP in recent years, and spatial distribution analysis indicates it was mainly affected by regional high urbanization and emission of E-waste. The spatial distribution of DP in the BS was mainly affected by a combination of coastal hydrodynamics and land anthropogenic activities. On the basis of multi-box mass balance, simulations of DP in seawater showed an increase from 2014 to 2025, before leveling off at 184 pg L −1 by a constant DP input to the BS. Riverine discharge almost contributed to the total input (∼99%) and dominated the DP levels in the BS. Degradation of DP accounted for 55.3% and 78.1% of total DP output in seawater and sediment, respectively, indicating that degradation mainly affected decline of DP in the environment.
KW - Bohai sea
KW - Budget
KW - DP
KW - Dechlorane plus
KW - Multi-box mass balance
UR - https://www.scopus.com/pages/publications/85097478923
U2 - 10.1016/j.envpol.2020.116214
DO - 10.1016/j.envpol.2020.116214
M3 - 文章
C2 - 33310198
AN - SCOPUS:85097478923
SN - 0269-7491
VL - 269
JO - Environmental Pollution
JF - Environmental Pollution
M1 - 116214
ER -
