Your browser doesn't support javascript.
loading
Sediment-associated microplastics in Chilika lake, India: Highlighting their prevalence, polymer types, possible sources, and ecological risks.
Kumar, Mohit; Naik, Dinesh Kumar; Maharana, Dusmant; Das, Moumita; Jaiswal, Ekta; Naik, Amiya Shankar; Kumari, Neha.
Afiliación
  • Kumar M; Department of Geology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
  • Naik DK; Department of Geology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India. Electronic address: dnaik.geo@bhu.ac.in.
  • Maharana D; School of Sciences, P. P. Savani University, Kosamba, Surat 394125, Gujarat, India; Department of Marine Sciences, Berhampur University, Berhampur 760007, Odisha, India. Electronic address: dusmant.maharana@ppsu.ac.in.
  • Das M; Mahila Mahavidyalaya, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
  • Jaiswal E; Department of Geology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India; Mahila Mahavidyalaya, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
  • Naik AS; Department of Geology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
  • Kumari N; Department of Geology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
Sci Total Environ ; 914: 169707, 2024 Mar 01.
Article en En | MEDLINE | ID: mdl-38184253
ABSTRACT
The primary objective of this research was to assess microplastics (MPs) in the sediments of Chilika lake. MPs were extracted from 22 sediment samples using the density separation method combined with vacuum pump filtration. A stereo-zoom microscope and Raman spectroscopy were employed to identify the sediment-associated MPs. The total MPs collected from all 22 sites was 440 ± 3.53 particles kg-1 wet sediments, with sizes ranging between 50 and 500 µm. In terms of morphology, fibers and fragments emerged as the dominant MP types, with counts of 210 ± 1.66 and 175 ± 1.76 particles kg-1 wet sediments, respectively. Raman spectroscopy verified the presence of various MP polymers in the sediments, predominantly HDPE (37 %), followed by PS (20 %), PET (18 %), PA (11 %), PP (7 %), and PC (7 %). A notable color variation was observed in MPs; black being the most prevalent (38.8 %), succeeded by blue (19.5 %), green (11.8 %), white (11.5 %), red (10.6 %), and transparent (7.5 %). ANOVA results indicated significant (p > 0.05) variations in MP abundance across the 22 sampling locations. However, principal component analysis (PCA) and multiple regression analysis indicated that water quality parameters did not significantly influence MP abundance, yet it was found that MP retention was higher in fine-grained sediments like clay and silt. The leading sources of MPs in Chilika lake were found to be aquafarming, trailed by river and sewage discharges, fishing activities, antifouling coatings and tourism. Additionally, the pollution load index (PLI) was employed to gauge the ecological risks, categorizing the lake under risk category 1, which implies a minimal level of MPs pollution. This research aims to serve as an early warning system for MPs pollution in productive brackish water habitats globally, including Chilika lake, guiding policymakers towards appropriate management strategies and preventive measures.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Lagos Tipo de estudio: Etiology_studies / Prevalence_studies / Risk_factors_studies País/Región como asunto: Asia Idioma: En Revista: Sci Total Environ Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Lagos Tipo de estudio: Etiology_studies / Prevalence_studies / Risk_factors_studies País/Región como asunto: Asia Idioma: En Revista: Sci Total Environ Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Países Bajos