Microplastic occurrence and ecological risk assessment in the eight outlets of the Pearl River Estuary, a new insight into the riverine microplastic input to the northern South China Sea

被引：33

作者：

Chau, Hoi Shan ^{[2
,3
,7
]}

Xu, Shaopeng ^{[2
,3
]}

Ma, Yue ^{[2
,3
]}

Wang, Qi ^{[2
,3
]}

Cao, Yaru ^{[2
,3
]}

Huang, Guangling ^{[4
]}

Ruan, Yuefei ^{[2
,3
]}

Yan, Meng ^{[2
,3
]}

Liu, Mengyang ^{[2
,3
]}

Zhang, Kai ^{[1
,2
,3
,5
,8
]}

Lam, Paul K. S. ^{[2
,3
,5
,6
]}

机构：

[1] Macau Univ Sci & Technol Southern Marine Sci, Macao Environm Res Inst, Fac Innovat Engn, Engn Guangdong Lab Zhuhai,Natl Observat & Res Stn, Macau, Peoples R China

[2] City Univ Hong Kong, State Key Lab Marine Pollut, Hong Kong, Peoples R China

[3] City Univ Hong Kong, Dept Chem, Hong Kong, Peoples R China

[4] Guangdong Res Inst Water Resources & Hydropower, Guangzhou, Peoples R China

[5] Hong Kong Univ Sci & Technol, Ctr Ocean Res Hong Kong & Macau CORE, Hong Kong, Peoples R China

[6] Hong Kong Metropolitan Univ, Sch Sci & Technol, Dept Sci, Hong Kong, Peoples R China

[7] Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore

[8] Macao Environm Res Inst Macau Univ Sci & Technol, Natl Observat & Res Stn Coastal Ecol Environm Maca, Macau, Peoples R China

来源：

MARINE POLLUTION BULLETIN | 2023年 / 189卷

关键词：

Riverine input; Flux; Concurrent sampling strategy; Risk assessment; PLASTIC DEBRIS; MARINE-ENVIRONMENT; POLLUTION; DELTA; POLYCARBONATE; ZOOPLANKTON; STRATEGIES; HEALTH; WATERS;

D O I：

10.1016/j.marpolbul.2023.114719

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Estuaries are unique transition zones connecting terrestrial and coastal environments and are recognized as primary conveyors for land-derived plastics to open oceans. Riverine microplastics (MPs) have been commonly investigated using sequential sampling which might not effectively reflect the actual load. In this study, sampling at eight outlets was performed during a complete tidal cycle to estimate the MP flux to the Pearl River Estuarine (PRE) using a concurrent sampling strategy. The MP abundances ranged from 2.90 +/- 0.57-5.9 +/- 2.27 particles/ L. A remarkable difference between tides in MP abundances suggests tidal effect should not be overlooked in assessment. The MP load through the eight outlets was estimated at 304 trillion particles or 1102 tons into the PRE annually. Additionally, similar potential ecological risk assessment among eight rivers implied that environmental threats posed by less urbanized and populated rural areas on the western side have been underevaluating for decades.

引用

页数：12