Microplastics in Indian Brackish Water Lagoon: Occurrence and Distribution in the Chilika Lake

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2023-09-16 DOI:10.1007/s11270-023-06627-8

Nisha Singh, Arijit Mondal, G Abhinav, PV Nagamani, Gopala Krishna Darbha

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Abstract

Microplastics have become a serious concern in the contemporary world due to their widespread and hazardous nature. This study investigates microplastic distribution in one of the largest brackish water lagoons in the world (Chilika Lake, India) to bridge the knowledge gap in a transitional environment. Sediment and water samples were investigated to estimate microplastic count and were categorized based on their shape, color, size, and polymer type. The overall abundance of microplastic in sediment and water sample from Chilika Lake varied from 25.2 ± 9.8 items/kg to 7 ± 2.2 items/kg and 110.7 ± 35.6 items/100L to 26 ± 8.1 items/100L, respectively. Anthropogenic activities such as extensive fishing activities and tourism were attributed to be the major source of microplastic besides upstream loads through inflowing rivers. Fragments and foams were the most commonly occurring microplastic shapes in sediment and water samples, respectively. Sediment samples were found to be highly abundant in microplastic particle size <1 mm. Water samples were dominated by white-color foams in 2–5 mm size range of microplastics. Ten different types of microplastic polymers were identified, of which polypropylene and polystyrene were the most dominant microplastic in sediment and water samples. Microplastic morphology showed surface features that can be attributed to their weathering. The study provides baseline information on microplastics in Chilika Lake to develop an insight into the associated environmental and health risks.

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印度咸淡水泻湖中的微塑料:奇里卡湖的发生和分布

微塑料由于其广泛的危害性质，已成为当今世界的一个严重问题。本研究调查了世界上最大的咸淡水泻湖之一(印度奇利卡湖)的微塑料分布，以弥合过渡环境中的知识差距。研究人员对沉积物和水样进行了调查，以估计微塑料数量，并根据它们的形状、颜色、大小和聚合物类型进行了分类。奇里卡湖沉积物和水样中微塑料的总体丰度分别为25.2±9.8 ~ 7±2.2和110.7±35.6 ~ 26±8.1。人类活动，如广泛的捕鱼活动和旅游被认为是微塑料的主要来源，除了通过流入的河流的上游负荷。碎片和泡沫分别是沉积物和水样中最常见的微塑料形状。发现沉积物样品中含有大量1毫米大小的微塑料颗粒。水样以2 ~ 5mm微塑料粒径范围内的白色泡沫为主。鉴定出10种不同类型的微塑料聚合物，其中聚丙烯和聚苯乙烯是沉积物和水样中最主要的微塑料。微塑性形貌表现出受风化作用影响的表面特征。该研究提供了奇利卡湖微塑料的基线信息，以深入了解相关的环境和健康风险。图形抽象

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.