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<p>This study examines heavy metal contamination in surface sediments along the industrial coast of Tuticorin, South India. Twenty sediment samples were analyzed for grain size, organic matter, and heavy metals (Fe, Mn, Cr, Cu, Ni, Pb, Zn). Various indices were calculated to assess contamination levels and ecological risks. Sediments were predominantly sandy silt and sandy clay, with organic matter averaging 0.31%. Mean heavy metal concentrations decreased in the order Fe &gt; Mn &gt; Cr &gt; Cu &gt; Pb &gt; Zn &gt; Ni. Enrichment factor analysis showed extremely high enrichment for Pb, Cr, and Cu. The geoaccumulation index and contamination factor confirmed significant contamination levels. The average degree of contamination was 67.50, the modified contamination degree was 9.64, and the Pollution Load Index was 1.34. The potential ecological risk index averaged 244.30, indicating high risk. Significant heavy metal accumulation and potential ecological risks were observed in Tuticorin’s coastal sediments. Fe, Zn, Mn, Pb, and Cu are derived from both lithogenic and anthropogenic sources, such as industrial discharges, antifouling paints, and urban runoff. This study underscores the condition of Tuticorin’s coastal sediments, emphasizing the need for continuous monitoring and effective waste management to minimize further ecological deterioration.</p>

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Tracing anthropogenic signatures of heavy metal dispersion and risk profiling in marine sediments of tuticorin’s industrial coast

  • 期刊论文

  • 发表日期：

    2025年12月18日

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  • Vigneshwar Jeyasingh,
  • Ramkumar Thirunavukkarasu,
  • Vasudevan Sivaprakasam,
  • Sathiyamoorthy Gunasekaran,
  • Baranidharan Sathyanarayanan,
  • Pravinraj Sampath,
  • Venkatramanan Senapathi,
  • Anandasabari Karthikeyan

摘要

This study examines heavy metal contamination in surface sediments along the industrial coast of Tuticorin, South India. Twenty sediment samples were analyzed for grain size, organic matter, and heavy metals (Fe, Mn, Cr, Cu, Ni, Pb, Zn). Various indices were calculated to assess contamination levels and ecological risks. Sediments were predominantly sandy silt and sandy clay, with organic matter averaging 0.31%. Mean heavy metal concentrations decreased in the order Fe > Mn > Cr > Cu > Pb > Zn > Ni. Enrichment factor analysis showed extremely high enrichment for Pb, Cr, and Cu. The geoaccumulation index and contamination factor confirmed significant contamination levels. The average degree of contamination was 67.50, the modified contamination degree was 9.64, and the Pollution Load Index was 1.34. The potential ecological risk index averaged 244.30, indicating high risk. Significant heavy metal accumulation and potential ecological risks were observed in Tuticorin’s coastal sediments. Fe, Zn, Mn, Pb, and Cu are derived from both lithogenic and anthropogenic sources, such as industrial discharges, antifouling paints, and urban runoff. This study underscores the condition of Tuticorin’s coastal sediments, emphasizing the need for continuous monitoring and effective waste management to minimize further ecological deterioration.