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| Main Authors: | , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Marine pollution bulletin
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40239278/ |
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Table of Contents:
- Microplastic contamination in deep-sea sediments and polymetallic nodules: Insights from the Clarion-Clipperton Zone, Pacific Ocean. Ronda, Ana Carolina Adaro, María Eugenia Villar-Muñoz, Lucía Tomba, Juan Pablo Baldrighi, Elisa Pacific Ocean Geologic Sediments Environmental Monitoring Water Pollutants, Chemical Microplastics This study investigates MPs in sediments and polymetallic nodules collected from the Clarion Clipperton Zone (CCZ) in the Pacific Ocean, using samples collected during a deep-sea mining exploration. MPs were detected in over half of the sediment samples and a third of the nodule samples, with an abundance ranging from 0 to 480 items/kg dry weight (d.w.) and 0 to 80 items/kg d.w. for sediments and nodules, respectively, with no significant difference between the two matrices. In terms of size, the smallest particle found was 0.165 mm in sediments and the largest 10 mm in nodules, being >40 % of the particles counted 1000 m) reveals considerable variability in reported concentrations, underscoring the challenge of assessing MP pollution in remote marine environments. The findings highlight the need for standardized methodologies to improve comparability across studies and enhance understanding of MP distribution in deep-sea ecosystems. Given the CCZ's ecological and economic significance, further research is crucial to assess the potential risks posed by MPs in this region.