Publications des scientifiques de l'IRD

Schmidt N., Fauvelle V., Ody Anouck, Castro-Jimenez J., Jouanno Julien, Changeux Thomas, Thibaut T., Sempere R. (2019). The Amazon river : a major source of organic plastic additives to the tropical north Atlantic ?. Environmental Science and Technology, 53 (13), p. 7513-7521. ISSN 0013-936X.

Titre du document
The Amazon river : a major source of organic plastic additives to the tropical north Atlantic ?
Année de publication
2019
Type de document
Article référencé dans le Web of Science WOS:000474478300034
Auteurs
Schmidt N., Fauvelle V., Ody Anouck, Castro-Jimenez J., Jouanno Julien, Changeux Thomas, Thibaut T., Sempere R.
Source
Environmental Science and Technology, 2019, 53 (13), p. 7513-7521 ISSN 0013-936X
The release of emerging organic contaminants is identified among the most critical hazards to the marine environment, and plastic additives have received growing attention due to their worldwide distribution and potential deleterious effects. Here, we report dissolved surface water concentrations of two important families of plastic additives (organophosphate esters (OPEs) and bisphenols) and other related organic compounds (perfluorinated chemicals) measured in the North Atlantic from Cape Verde to the West Indies. We found that OPEs were the most abundant contaminants, reaching remarkably high concentrations in open ocean waters (1200 km offshore of the American Coast, at the location of the Amazon river plume during the sampling period), with up to 1.3 mu g L-1 (Sigma 9OPEs). A Lagrangian analysis confirmed that these high concentrations of contaminants originated from the Amazon River plume and were transported more than 3000 km by the North Brazil Current and its retroflection. We thus consider the Amazon River as a major source of organic contaminants of emerging concern to the tropical North Atlantic Ocean and suggest that medium-/long-range contaminant transport occurs, most certainly facilitated by the highly stratified conditions offered by the river plume.
Plan de classement
Pollution [038] ; Hydrologie [062]
Description Géographique
ZONE TROPICALE
Localisation
Fonds IRD [F B010076195]
Identifiant IRD
fdi:010076195
Contact