Evaluation of the accumulation of the iodinated contrast agents diatrizoic acid and iohexol in Dreissena polymorpha mollusks

This study was the first to provide information on iodine concentration in whole soft tissues and several organs in control zebra mussels. Moreover, it showed, after exposure, an increase of iodine content mainly in the digestive glands, followed by gills and gonads, highlighting that ICMs actually enter the organisms. Thus, bioaccumulation of ICMs studies were then performed, by liquid chromatography coupled to tandem mass spectrometry, on entire mollusks and digestive glands of organisms exposed at 0, 10, 100, and 1000 μg/L of both ICMs during 21 days, followed by 4 days of depuration. These first data on ICMs concentrations in zebra mussels, showed a clear accumulation of ICMs in mussels as a function of relative exposure level, as well as a rapid depuration. Osmolality did not seem to have a significant impact on the accumulation level, but a slight difference was observed on the accumulation pattern between both ICMs.PMID:36370762 | DOI:10.1016/j.chemosphere.2022.137153

Source: Chemosphere - November 12, 2022 Category: Chemistry Authors: Ga ëlle Daniele Florent Lafay Carine Arnaudguilhem Sandra Mounicou Alain Geffard Isabelle Bonnard Odile Dedourge-Geffard Christelle Bonnefoy Emmanuelle Vulliet Source Type: research