TY - JOUR
T1 - The combination of detection and simulation for the distribution and sourcing of microplastics in Shing Mun River estuary, Hong Kong
AU - Shen, Hao
AU - Tan, Hongli
AU - Lu, Yi
AU - Gao, Yifei
AU - Xia, Yongjun
AU - Cai, Zongwei
N1 - Acknowledgement:
The authors expressed their great gratitude and respect to the providers and maintainers of WRF, ROMS, Opendrift, the corresponding communities, and all the open source datasets accessible for global researchers including Global Forecast System (GFS), The Group for High Resolution Sea Surface Temperature (GHRSST), OpenStreetMap, GEBCO, Global Ocean Forecast Systsm (GOFS), TPXO Tide Models, Hong Kong Tidal Stream Prediction System, and ECMWF Reanalysis v5 (ERA5).
Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/10/10
Y1 - 2024/10/10
N2 - For the first time, combined detection and simulation was performed on microplastic (MP) debris in surface water, sediment, and oyster samples at ten coastal sites of Shing Mun River estuary, Hong Kong at different tidal conditions. The MP debris were extracted and detected using Fourier transform infrared (FT-IR) spectroscopy, and the simulation was conducted using Weather Research & Forecasting Model (WRF) / Regional Ocean Modelling System (ROMS) coupled hydro-dynamic modelling and the subsequent Lagrangian particle tracking. The results demonstrated the majority of polyethylene (with partial chlorine substitution) debris among all the MPs found, and great spatial and tidal variabilities of MP concentrations were observed. The combination of MP observation and simulations referred to the interpretation that a considerable percentage of MPs found in this study originated from South China Sea. Those MPs were probably transported to Tolo Harbour through sea currents and drifted inshore and offshore with tides. This study provided baseline measures of MP concentrations in Shing Mun River estuary and comprehensive understanding for how MPs transport and distribute within a dynamic estuarine system.
AB - For the first time, combined detection and simulation was performed on microplastic (MP) debris in surface water, sediment, and oyster samples at ten coastal sites of Shing Mun River estuary, Hong Kong at different tidal conditions. The MP debris were extracted and detected using Fourier transform infrared (FT-IR) spectroscopy, and the simulation was conducted using Weather Research & Forecasting Model (WRF) / Regional Ocean Modelling System (ROMS) coupled hydro-dynamic modelling and the subsequent Lagrangian particle tracking. The results demonstrated the majority of polyethylene (with partial chlorine substitution) debris among all the MPs found, and great spatial and tidal variabilities of MP concentrations were observed. The combination of MP observation and simulations referred to the interpretation that a considerable percentage of MPs found in this study originated from South China Sea. Those MPs were probably transported to Tolo Harbour through sea currents and drifted inshore and offshore with tides. This study provided baseline measures of MP concentrations in Shing Mun River estuary and comprehensive understanding for how MPs transport and distribute within a dynamic estuarine system.
KW - Bioavailability
KW - Environmental modelling
KW - Hong Kong
KW - Microplasics
KW - Shing Mun River
UR - http://www.scopus.com/inward/record.url?scp=85196798198&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2024.174305
DO - 10.1016/j.scitotenv.2024.174305
M3 - Journal article
C2 - 38936714
AN - SCOPUS:85196798198
SN - 0048-9697
VL - 946
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 174305
ER -
