{"title":"印度普杜切里Ariyankuppam河微塑料激增:丰度、特征和污染负荷指数的研究","authors":"Cheena Joshi , Saoo Wan Emi Phyllei , Sunidhi Bhatt , Subhankar Chatterjee","doi":"10.1016/j.jconhyd.2025.104669","DOIUrl":null,"url":null,"abstract":"<div><div>The increasing rate of microplastic (MP) pollution in the aquatic environment poses an escalating threat to marine ecosystems and several health concerns to humans. Ocean and Sea MP pollution has been a grave concern in recent decades, and rivers are considered one of the main channels that carry MP to the sea. Here, we investigated the MP abundance in the Ariyankuppam River, which flows through the Puducherry region in South India and merges with the Bay of Bengal. The water and sediment samples were collected from ten locations along the river over three months, from January to March 2024, coinciding with the post-monsoon phase in Puducherry, to understand the impact of seasonal variations on MP abundance. The average MP abundance of sediments and water was found to be 136.33 ± 24.75 particles/Kg and 124.83 ± 22.44 particles/L, respectively. A total of 7837 MP particles were detected, with approximately 52.2 % and 47.8 % originating from sediment and water samples. Fibers were major polymer forms, with an abundance of 79.4 % in sediment and 87.9 % in water samples. The classification of MP (0–3000 μm) reveals predominance of smaller particles, mainly within 0–500 μm and 500–1000 μm. High-density polyethylene (HDPE) and Low-Density Polyethylene (LDPE) were the dominant polymer types in sediments and water samples collected from ten sites along the river. Our results found not much of a significant difference in MP abundances across the months in both sediment and water samples. The Pollution Load Index (PLI) assessment indicated a Hazard Level I (<10), a minimal risk level. These data will help the local government and other agencies take necessary measures for mitigation strategies to safeguard these vital water bodies.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"274 ","pages":"Article 104669"},"PeriodicalIF":4.4000,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microplastic surge in the Ariyankuppam river, Puducherry, India: A study on abundance, characterization, and pollution load index\",\"authors\":\"Cheena Joshi , Saoo Wan Emi Phyllei , Sunidhi Bhatt , Subhankar Chatterjee\",\"doi\":\"10.1016/j.jconhyd.2025.104669\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The increasing rate of microplastic (MP) pollution in the aquatic environment poses an escalating threat to marine ecosystems and several health concerns to humans. Ocean and Sea MP pollution has been a grave concern in recent decades, and rivers are considered one of the main channels that carry MP to the sea. Here, we investigated the MP abundance in the Ariyankuppam River, which flows through the Puducherry region in South India and merges with the Bay of Bengal. The water and sediment samples were collected from ten locations along the river over three months, from January to March 2024, coinciding with the post-monsoon phase in Puducherry, to understand the impact of seasonal variations on MP abundance. The average MP abundance of sediments and water was found to be 136.33 ± 24.75 particles/Kg and 124.83 ± 22.44 particles/L, respectively. A total of 7837 MP particles were detected, with approximately 52.2 % and 47.8 % originating from sediment and water samples. Fibers were major polymer forms, with an abundance of 79.4 % in sediment and 87.9 % in water samples. The classification of MP (0–3000 μm) reveals predominance of smaller particles, mainly within 0–500 μm and 500–1000 μm. High-density polyethylene (HDPE) and Low-Density Polyethylene (LDPE) were the dominant polymer types in sediments and water samples collected from ten sites along the river. Our results found not much of a significant difference in MP abundances across the months in both sediment and water samples. The Pollution Load Index (PLI) assessment indicated a Hazard Level I (<10), a minimal risk level. These data will help the local government and other agencies take necessary measures for mitigation strategies to safeguard these vital water bodies.</div></div>\",\"PeriodicalId\":15530,\"journal\":{\"name\":\"Journal of contaminant hydrology\",\"volume\":\"274 \",\"pages\":\"Article 104669\"},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2025-07-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of contaminant hydrology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0169772225001743\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of contaminant hydrology","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0169772225001743","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Microplastic surge in the Ariyankuppam river, Puducherry, India: A study on abundance, characterization, and pollution load index
The increasing rate of microplastic (MP) pollution in the aquatic environment poses an escalating threat to marine ecosystems and several health concerns to humans. Ocean and Sea MP pollution has been a grave concern in recent decades, and rivers are considered one of the main channels that carry MP to the sea. Here, we investigated the MP abundance in the Ariyankuppam River, which flows through the Puducherry region in South India and merges with the Bay of Bengal. The water and sediment samples were collected from ten locations along the river over three months, from January to March 2024, coinciding with the post-monsoon phase in Puducherry, to understand the impact of seasonal variations on MP abundance. The average MP abundance of sediments and water was found to be 136.33 ± 24.75 particles/Kg and 124.83 ± 22.44 particles/L, respectively. A total of 7837 MP particles were detected, with approximately 52.2 % and 47.8 % originating from sediment and water samples. Fibers were major polymer forms, with an abundance of 79.4 % in sediment and 87.9 % in water samples. The classification of MP (0–3000 μm) reveals predominance of smaller particles, mainly within 0–500 μm and 500–1000 μm. High-density polyethylene (HDPE) and Low-Density Polyethylene (LDPE) were the dominant polymer types in sediments and water samples collected from ten sites along the river. Our results found not much of a significant difference in MP abundances across the months in both sediment and water samples. The Pollution Load Index (PLI) assessment indicated a Hazard Level I (<10), a minimal risk level. These data will help the local government and other agencies take necessary measures for mitigation strategies to safeguard these vital water bodies.
期刊介绍:
The Journal of Contaminant Hydrology is an international journal publishing scientific articles pertaining to the contamination of subsurface water resources. Emphasis is placed on investigations of the physical, chemical, and biological processes influencing the behavior and fate of organic and inorganic contaminants in the unsaturated (vadose) and saturated (groundwater) zones, as well as at groundwater-surface water interfaces. The ecological impacts of contaminants transported both from and to aquifers are of interest. Articles on contamination of surface water only, without a link to groundwater, are out of the scope. Broad latitude is allowed in identifying contaminants of interest, and include legacy and emerging pollutants, nutrients, nanoparticles, pathogenic microorganisms (e.g., bacteria, viruses, protozoa), microplastics, and various constituents associated with energy production (e.g., methane, carbon dioxide, hydrogen sulfide).
The journal''s scope embraces a wide range of topics including: experimental investigations of contaminant sorption, diffusion, transformation, volatilization and transport in the surface and subsurface; characterization of soil and aquifer properties only as they influence contaminant behavior; development and testing of mathematical models of contaminant behaviour; innovative techniques for restoration of contaminated sites; development of new tools or techniques for monitoring the extent of soil and groundwater contamination; transformation of contaminants in the hyporheic zone; effects of contaminants traversing the hyporheic zone on surface water and groundwater ecosystems; subsurface carbon sequestration and/or turnover; and migration of fluids associated with energy production into groundwater.