A baseline study of microplastic pollution in a Southern Indian Estuary

被引：39

作者：

Unnikrishnan, Vishnu ^{[1
]}

Valsan, Gokul ^{[1
]}

Amrutha, K. ^{[1
]}

Sebastian, Joju George ^{[1
]}

Rangel-Buitrago, Nelson ^{[2
,3
]}

Khaleel, Rizwan ^{[4
]}

Chandran, Thara ^{[5
]}

Reshma, S. R. ^{[6
]}

Warrier, Anish Kumar ^{[1
,7
]}

机构：

[1] Manipal Acad Higher Educ, Manipal Inst Technol, Dept Civil Engn, Manipal 576104, Karnataka, India

[2] Univ Atlantico, Fac Ciencias Bas, Programa Fis, Puerto Colombia, Atlantico, Colombia

[3] Univ Atlantico, Fac Ciencias Bas, Programa Biol, Puerto Colombia, Atlantico, Colombia

[4] Manipal Acad Higher Educ, Dept Sci, Manipal 576104, Karnataka, India

[5] Nitte Univ, AB Shetty Mem Inst Dent Sci ABSMIDS, Dept Publ Hlth Dent, Mangalore 574199, Karnataka, India

[6] Cent Univ Karnataka, Dept Geol, Kalaburagi 585367, Karnataka, India

[7] Manipal Acad Higher Educ, Ctr Climate Studies, Manipal 576104, Karnataka, India

来源：

MARINE POLLUTION BULLETIN | 2023年 / 186卷

关键词：

Vertical distribution; Microplastics; Water column; Estuary; Pollution load index; Southwest India; PLASTIC DEBRIS; RIVER ESTUARY; WATER COLUMN; HEAVY-METALS; SEA; COAST; FISH; CONTAMINATION; ENVIRONMENT; INGESTION;

D O I：

10.1016/j.marpolbul.2022.114468

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Knowledge on the processes controlling the vertical distribution of microplastics (MPs) in estuaries is less. This research was carried out to determine the MP distribution in the surface, middle, and bottom layers of the Udyavara River Estuary in southwest India. The mean (+/- standard deviation) concentrations were 320.83 (+/- 98.30), 514.55 (+/- 352.16), and 755.03 (+/- 400.96) particles/m3, respectively. Fibres, films, and fragments dominated, and 57 % of the MPs had a size range of 0.3-1 mm, while 43 % had a size of 1-5 mm. The main polymers were high-density polyethylene and polyethylene terephthalate. A positive correlation (r = 0.421, p = 0.0205, n = 30) exists between the MPs and salinity, suggesting that the MPs are held by dense saline waters. The mean pollution load index value was 2.25 indicating severe pollution. Microplastic pollution is due to harbour, fishing, industrial activities, the effects of southwest monsoon rain, and tidal currents.

引用

页数：11

共 95 条

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