文献类型：期刊文献

英文题名：Ocean current modulation of the spatial distribution of microplastics in the surface sediments of the Beibu Gulf, China

作者：Wu, Liyuan[1];Li, Chengyong[3];Huang, Chao[1,2,4,5];Luo, Yongyi[1];Huang, Jiang[1];Chen, Fajin[1,4,5];Huang, Xin[1,4,5];Sun, Ruikun[3]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[2]Minist Nat Resources, Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, Guangzhou 511458, Peoples R China;[3]Guangdong Ocean Univ, Sch Chem & Environm, Guangdong Prov Observat & Res Stn Trop Ocean Envir, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Key Lab Climate Resources & Environm Continental S, Dept Educ, Zhanjiang 524088, Guangdong, Peoples R China;[5]Minist Nat Resources, Key Lab Space Ocean Remote Sensing & Applicat, Nanjing, Peoples R China

年份：2025

卷号：488

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：SCI-EXPANDED(收录号：WOS:001410092000001)、、EI(收录号：20250417756901)、Scopus(收录号：2-s2.0-85215826914)、WOS

基金：This work was financially supported by Key Laboratory of Marine Mineral Resources, Ministry of Natural and Resources, Guangzhou (No. KLMMR-2022-G10) , National Natural Science Foundation of China (42371162) , the Innovative Team Project of Guangdong Universities (2019KCXTF021) , First-class Discipline Plan of Guangdong Province (080503032101, 231420003) , and Guangdong Provincial Observation and Research Station for Tropical Ocean Environment in Western Coastal Waters (GSTOEW) . Samples were collected onboard of R/V "Beidou" implementing the open research cruise NORC2021-11 supported by NSFC Shiptime Sharing Project (project number: 42249911) . We thank Yin Yang and Junchuan Lin for their help with the field work; Min Chang, Wei Lu, Yuhan Xie, Jin Xu, and Xiaohan Xu for their help with laboratory analysis. The data for this paper are available as the online supplementary dataset.

语种：英文

外文关键词：Beibu Gulf; Microplastic; Sediment; Hydrodynamic conditions; Risk assessment

外文摘要：Microplastic pollution, a major global environmental issue, is gaining heightened attention worldwide. Marginal seas are particularly susceptible to microplastic contamination, yet data on microplastics in marine sediments remain scarce, especially in the Beibu Gulf. This study presents a large-scale investigation of microplastics in the surface sediments of the Beibu Gulf to deciphering their distribution, sources and risk to marginal seas ecosystems. The results reveal widespread microplastic contamination, with an average abundance of 391 +/- 27 items/ kg in sediments. The spatial variability of microplastic abundance was significant, with lower levels in the western Beibu Gulf and higher concentrations in the northeastern and southeastern regions. The spatial distribution of microplastics was largely driven by geological features, hydrodynamic conditions, and human activity, with minimal influence from local environmental factors such as water depth, sediment grain size, organic carbon content, and sediment types. The pollution load index (PLI) suggests a low level of microplastic contamination, but the polymer hazard index (PHI) identified a high ecological risk, likely due to the presence of PVC, a polymer with higher chemical toxicity. Our findings highlight the significant role of hydrodynamic processes in determining microplastic distribution in the Beibu Gulf. These insights enhance our understanding of microplastic dispersal and its governing factors in semi-enclosed marginal seas, providing foundation for targeted pollution control strategies.