TY - JOUR
T1 - Upwelling impact and lateral transport of dissolved PAHs in the Taiwan Strait and adjacent South China Sea
AU - Ye, Jiandong
AU - Zheng, Haowen
AU - Liu, Mengyang
AU - Tanli, Yina
AU - Qi, Huaiyuan
AU - Jing, Lingkun
AU - Huang, Jiajin
AU - Hossain, Kazi Belayet
AU - Ke, Hongwei
AU - Wang, Chunhui
AU - Wang, Shanlin
AU - Cai, Minggang
PY - 2023/10/15
Y1 - 2023/10/15
N2 - The spatial distribution and depth profile of dissolved polycyclic aromatic hydrocarbons (PAHs) were investigated in the western Taiwan Strait (TWS) and northeastern South China Sea (SCS) during the southwest monsoon for a comprehensive study of spatial distribution, potential sources, upwelling, and lateral PAHs transport flux to assess the impacts of oceanic processes. The concentrations of ∑14PAHs were 33 ± 14 ng L−1 and 23 ± 11 ng L−1 in western TWS and northeastern SCS, respectively. A minor difference in potential sources in different areas was shown in principle component analysis results, which illustrated mixed sources (petrogenic and pyrogenic) in western TWS and petrogenic sources in northeastern SCS. An “enrichment in surface or deep but depletion in medium water” distribution pattern of PAHs depth profile during summertime was observed in Taiwan Bank, which was potentially influenced by the upwelling. The greatest lateral ∑14PAHs transport flux was found along the Taiwan Strait Current area (43.51 g s−1), followed by those along South China Sea Warm Current and Guangdong Coastal Current areas. Though the oceanic response to PAHs varied relatively slowly, the ocean current was a less-dominant pathway for PAHs exchange between the SCS and the East China Sea (ECS). © 2023 Published by Elsevier B.V
AB - The spatial distribution and depth profile of dissolved polycyclic aromatic hydrocarbons (PAHs) were investigated in the western Taiwan Strait (TWS) and northeastern South China Sea (SCS) during the southwest monsoon for a comprehensive study of spatial distribution, potential sources, upwelling, and lateral PAHs transport flux to assess the impacts of oceanic processes. The concentrations of ∑14PAHs were 33 ± 14 ng L−1 and 23 ± 11 ng L−1 in western TWS and northeastern SCS, respectively. A minor difference in potential sources in different areas was shown in principle component analysis results, which illustrated mixed sources (petrogenic and pyrogenic) in western TWS and petrogenic sources in northeastern SCS. An “enrichment in surface or deep but depletion in medium water” distribution pattern of PAHs depth profile during summertime was observed in Taiwan Bank, which was potentially influenced by the upwelling. The greatest lateral ∑14PAHs transport flux was found along the Taiwan Strait Current area (43.51 g s−1), followed by those along South China Sea Warm Current and Guangdong Coastal Current areas. Though the oceanic response to PAHs varied relatively slowly, the ocean current was a less-dominant pathway for PAHs exchange between the SCS and the East China Sea (ECS). © 2023 Published by Elsevier B.V
KW - Coastal dynamics
KW - Lateral flux
KW - Oceanic transport
KW - Polycyclic aromatic hydrocarbons (PAHs)
KW - Vertical profiles
UR - http://www.scopus.com/inward/record.url?scp=85163892937&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85163892937&origin=recordpage
U2 - 10.1016/j.scitotenv.2023.165159
DO - 10.1016/j.scitotenv.2023.165159
M3 - RGC 21 - Publication in refereed journal
C2 - 37385490
SN - 0048-9697
VL - 895
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 165159
ER -
