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Metals and metalloids concentrations in three genotypes of pelagic Sargassum from the Atlantic Ocean Basin-scale
Cipolloni, O.-A.; Gigault, J.; Dassié, É.P.; Baudrimont, M.; Gourves, P.-Y.; Amaral-Zettler, L.; Pascal, P.-Y. (2022). Metals and metalloids concentrations in three genotypes of pelagic Sargassum from the Atlantic Ocean Basin-scale. Mar. Pollut. Bull. 178: 113564. https://dx.doi.org/10.1016/j.marpolbul.2022.113564
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, meer
Peer reviewed article  

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Author keywords
    Metals; Metalloids; Arsenic; S. natans; S. fluitans; Caribbean Sea

Auteurs  Top 
  • Cipolloni, O.-A.
  • Gigault, J.
  • Dassié, É.P.
  • Baudrimont, M.
  • Gourves, P.-Y.
  • Amaral-Zettler, L., meer
  • Pascal, P.-Y.

Abstract
    Since 2011, the Caribbean Islands have witnessed unprecedented massive stranding of a pelagic brown algal Sargassum spp. inducing damagesfor coastal ecosystems and economy. By accumulating heavy metals, Sargassum can play a role in contaminant transportation fromoffshore to the coast. In 2019, three genotypes of Sargassum ( S. fluitans III, S. natans I, and VIII) were sampled in seven stations along a 3400 km transect in the Atlantic Ocean. Concentrations of 15 heavy metal(loid)s elements were analyzed by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). Mean metal concentrations were ranked following descending order: As >Fe > Al > Mn > Cd > Zn > Ni > V > Cu > Cr > Hg. The metalloid As was the most abundant contaminant with a maximum value of 115 ppm, previously observed in the Caribbean area (80–150 ppm). At Atlantic Ocean Basin-scale, metallic element concentrations do not present spatial longitudinal gradients. Genotypes S. fluitans III and S. natans (I and VIII), present differents metal(loid)s contamination distinct patterns.

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