Compound-specific recording of gadolinium pollution in coastal waters by great scallops

Type Article
Date 2019-05
Language English
Author(s) Le Goff SamuelORCID1, 2, Barrat Jean-Alix1, 2, Chauvaud Laurent2, 3, Paulet Yves-Marie2, 3, Gueguen Bleuenn2, 4, Ben Salem Douraied5
Affiliation(s) 1 : Univ Bretagne Occidentale, CNRS, UMR 6538, Lab Geosci Ocean, Pl Nicolas Copernic, F-29280 Plouzane, France.
2 : Inst Univ Europeen Mer, Pl Nicolas Copernic, F-29280 Plouzane, France.
3 : Univ Bretagne Occidentale, CNRS, UMR 6539, Lab Sci Environm Marin,LIA BeBEST, Pl Nicolas Copernic, F-29280 Plouzane, France.
4 : Univ Bretagne Occidentale, CNRS, UMS 3113, Pl Nicolas Copernic, F-29280 Plouzane, France.
5 : Univ Bretagne Occidentale, INSERM, UMR 1101, LaTIM, 22 Ave C Desmoulins, F-29238 Brest 3, France.
Source Scientific Reports (2045-2322) (Nature Publishing Group), 2019-05 , Vol. 9 , P. 8015 (5p.)
DOI 10.1038/s41598-019-44539-y
WOS© Times Cited 28

Gadolinium-based contrast agents (GBCAs), routinely used in magnetic resonance imaging (MRI), end up directly in coastal seawaters where gadolinium concentrations are now increasing. Because many aquatic species could be sensitive to this new pollution, we have evaluated the possibility of using shellfish to assess its importance. Gadolinium excesses recorded by scallop shells collected in Bay of Brest (Brittany, France) for more than 30 years do not reflect the overall consumption in GBCAs, but are largely controlled by one of them, the gadopentetate dimeglumine. Although its use has been greatly reduced in Europe over the last ten years, gadolinium excesses are still measured in shells. Thus, some gadolinium derived from other GBCAs is bioavailable and could have an impact on marine wildlife.

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