Analysis of microplastics in ships ballast water and its ecological risk assessment studies from the Persian Gulf

Mar Pollut Bull. 2024 Jan:198:115825. doi: 10.1016/j.marpolbul.2023.115825. Epub 2023 Nov 28.

Abstract

Transport of ballast water is considered a significant vector for dispersion of different pollutants, including microplastics (MPs), throughout the world's oceans. However, there is limited information on MPs in ballast water. Size distribution, polymer type, and ecological risks of MPs in ballast water were investigated for the first time in this study. The mean levels of MPs in ballast water and seawater samples were 12.53 and 11.80 items/L, respectively. MPs with a size category of 50-300 μm was the most abundant. Fiber, black, and polycarbonate (PC) were the predominant shape, color, and polymer type of identified MPs in ballast water and seawater, respectively. The pollution load index (PLI), hazard index (HI), and risk quotient (RQ) indicated high levels of MP pollution, potentially indicating an ecological risk. These findings increase our understanding of the major sources (such as ballast water), transportation routes, and related ecological risks of MPs to marine ecosystems.

Keywords: Ballast tank; Hazard index; Marine environment; Persian gulf; Plastic particles; Pollution load index.

MeSH terms

  • Ecosystem
  • Environmental Monitoring
  • Indian Ocean
  • Microplastics* / analysis
  • Plastics / analysis
  • Polymers / analysis
  • Risk Assessment
  • Ships
  • Water / analysis
  • Water Pollutants, Chemical* / analysis

Substances

  • Microplastics
  • Plastics
  • Water
  • Water Pollutants, Chemical
  • Polymers