TY - JOUR
T1 - Pollution characteristics, spatial variation, and potential risks of phthalate esters in the water–sediment system of the Yangtze River estuary and its adjacent East China Sea
AU - Zhang, Ze Ming
AU - Zhang, Jing
AU - Zhang, Hong Hai
AU - Shi, Xi Zhi
AU - Zou, Ya Wen
AU - Yang, Gui Peng
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/10
Y1 - 2020/10
N2 - Spatiotemporal variability in seawater, spatial variation in sediment, pollution characteristics, and risks related to 16 phthalate esters (PAEs) were investigated in the Yangtze River estuary and its adjacent East China Sea. The total concentrations of ΣPAEs in surface water were 0.588–17.7 μg L−1 in summer, 2.63–22.9 μg L−1 in winter, and 1.93–20.7 μg L−1 in spring, with average values of 2.05, 10.2, and 4.89 μg L−1, respectively. PAE concentrations exhibited notable seasonal variations with the highest value in winter and the lowest value in summer. The seasonal variation in PAE concentrations may be influenced by runoff and diluted water from the Yangtze River. The chemical composition of PAEs showed that di-n-butyl phthalate (DnBP), diisobutyl phthalate (DiBP), and di(2-ethylhexyl) phthalate (DEHP) had significantly higher (p < 0.05) concentrations than the other congeners and were the most abundant PAE species in sediment and seawater in all three seasons. In addition, DnBP and DiBP were the two main congeners in seawater, and DEHP concentrations were higher in sediment than in seawater. DEHP had higher potential risks to sensitive organisms in water environment than DnBP and DiBP, and DiBP and DnBP which presented high levels of risk in sedimentary environment. DMP and DEP in watery and sedimentary environments and DEHP in sedimentary environment showed no or low risks to sensitive organisms.
AB - Spatiotemporal variability in seawater, spatial variation in sediment, pollution characteristics, and risks related to 16 phthalate esters (PAEs) were investigated in the Yangtze River estuary and its adjacent East China Sea. The total concentrations of ΣPAEs in surface water were 0.588–17.7 μg L−1 in summer, 2.63–22.9 μg L−1 in winter, and 1.93–20.7 μg L−1 in spring, with average values of 2.05, 10.2, and 4.89 μg L−1, respectively. PAE concentrations exhibited notable seasonal variations with the highest value in winter and the lowest value in summer. The seasonal variation in PAE concentrations may be influenced by runoff and diluted water from the Yangtze River. The chemical composition of PAEs showed that di-n-butyl phthalate (DnBP), diisobutyl phthalate (DiBP), and di(2-ethylhexyl) phthalate (DEHP) had significantly higher (p < 0.05) concentrations than the other congeners and were the most abundant PAE species in sediment and seawater in all three seasons. In addition, DnBP and DiBP were the two main congeners in seawater, and DEHP concentrations were higher in sediment than in seawater. DEHP had higher potential risks to sensitive organisms in water environment than DnBP and DiBP, and DiBP and DnBP which presented high levels of risk in sedimentary environment. DMP and DEP in watery and sedimentary environments and DEHP in sedimentary environment showed no or low risks to sensitive organisms.
KW - PAEs
KW - Risk evaluation
KW - Seasonal and spatial variations
KW - Yangtze river estuary
UR - https://www.scopus.com/pages/publications/85086134354
U2 - 10.1016/j.envpol.2020.114913
DO - 10.1016/j.envpol.2020.114913
M3 - 文章
C2 - 32531649
AN - SCOPUS:85086134354
SN - 0269-7491
VL - 265
JO - Environmental Pollution
JF - Environmental Pollution
M1 - 114913
ER -