FN Archimer Export Format
PT J
TI Chemical Forms of Mercury in Blue Marlin Billfish: Implications for Human Exposure
BT 
AF Manceau, Alain
   Azemard, Sabine
   Hédouin, Laetitia
   Vassileva, Emilia
   Lecchini, David
   Fauvelot, Cecile
   Swarzenski, Peter W
   Glatzel, Pieter
   Bustamante, Paco
   Metian, Marc
AS 1:1;2:2;3:3;4:2;5:3;6:4,7;7:1;8:5;9:6;10:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;
C1 Université Grenoble Alpes, CNRS, ISTerre, F-38000 Grenoble, France
   International Atomic Energy Agency (IAEA), Environment Laboratories, MC-98000, Monaco
   Laboratoire d’Excellence CORAIL, F- 66100 Perpignan, France; PSL Research University, EPHEUPVD- CNRS, CRIOBE, F-98729 Moorea, French Polynesia
   Sorbonne Université, CNRS, Laboratoire d’Océanographie de Villefranche, F-06230 Villefranche-sur-Mer, France
   European Synchrotron Radiation Facility (ESRF), F-38000 Grenoble, France
   La Rochelle Université, CNRS, Littoral Environnement et Sociétés (LIENSs), F-17000 La Rochelle, France
   Laboratoire d’Excellence CORAIL, F- 66100 Perpignan, France; IRD, Université de la Réunion, CNRS, IFREMER, Université de la Nouvelle-Calédonie, ENTROPIE, F-06230 Villefranche-sur-Mer, France
C2 UNIV GRENOBLE ALPES, FRANCE
   IAEA, MONACO
   UNIV PERPIGNAN, FRANCE
   UNIV SORBONNE, FRANCE
   ESRF, FRANCE
   UNIV LA ROCHELLE, FRANCE
   IRD, FRANCE
UM ENTROPIE
IN WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 11.558
TC 21
UR https://archimer.ifremer.fr/doc/00689/80066/97855.pdf
LA English
DT Article
AB Although fish is an important source of nutrients, including some of the healthiest proteins, long-chain fatty acids, and essential selenium, species at the top of the food chain frequently contain large amounts of toxic mercury (Hg). The provisional tolerable weekly intake (PTWI) of Hg from fish consumption is calculated from the total concentration of Hg and assuming that all Hg is speciated as organic methylmercury (MeHg). Using high energy-resolution X-ray absorption near-edge structure (HR-XANES) spectroscopy, we show that blue marlin (Makaira sp.), a common top predator consumed by humans, contains high concentrations of inorganic Hg(II) complexed as 57 ± 10% Hg-tetraselenolate [Hg(Sec)4] and 43 ± 10% tiemannite (HgSe). The stable Hg–Se chemical bond likely attenuates the bioavailability of Hg and counteracts some of its health hazards to consumers. Thus, monitoring the concentration of MeHg, rather than total Hg, in top predators such as marlin would provide a more robust measure of potential Hg exposure and may be sufficient for food safety controls. The bonding of Hg atoms to four selenocysteine (Sec) residues in the Hg(Sec)4 complex severely depletes the stock of bioavailable Se, and quantification shows that blue marlin is not a chief source of dietary Se essential to selenoenzyme synthesis and activity. 
PY 2021
PD MAY
SO Environmental Science & Technology Letters
SN 2328-8930
PU American Chemical Society
VL 8
IS 5
UT 000651526300007
BP 405
EP 411
DI 10.1021/acs.estlett.1c00217
ID 80066
ER

EF