@article{PAR00014293,
  title = {{N}atural {H}g isotopic composition of different {H}g compounds in mammal tissues as a proxy for in vivo breakdown of toxic methylmercury},
  author = {{P}errot, {V}. and {M}asbou, {J}. and {P}astukhov, {M}. {V}. and {E}pov, {V}. {N}. and {P}oint, {D}avid and {B}erail, {S}. and {B}ecker, {P}. {R}. and {S}onke, {J}. {E}. and {A}mouroux, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n the last decade, specific attention has been paid to total mercury ({H}g{T}) stable isotopic composition, especially in natural samples such as aquatic organisms, due to its potential to track the cycle of this toxic element in the environment. {H}ere, we investigated {H}g {C}ompound {S}pecific stable {I}sotopic {C}omposition ({CSIC}) of natural inorganic {H}g (i{H}g) and methylmercury ({MMH}g) in various tissues of aquatic mammals ({B}eluga whale from the {A}rctic marine environment and seals from the freshwater lake {B}aikal, {R}ussia). {I}n seals' organs the variation in mass dependent fractionation ({MDF}, delta {H}g-202) for total {H}g was significantly correlated to the respective fraction of i{H}g and {MMH}g compounds, with {MMH}g being enriched by {B}3% in heavier isotopes relative to i{H}g. {O}n the other hand, we observe insignificant variation in {H}g mass independent isotope fractionation ({MIF}, {D}elta {H}g-199) among i{H}g and {MMH}g in all organs for the same mammal species and {MMH}g in prey items. {MIF} signatures suggest that both {MMH}g and i{H}g in aquatic mammals have the same origin (i.e., {MMH}g from food), and are representative of {H}g photochemistry in the water column of the mammal ecosystem. {MDF} signatures of {H}g compounds indicate that {MMH}g is demethylated in vivo before being stored in the muscle, and the i{H}g formed is stored in the liver, and to a lesser extent in the kidney, before excretion. {T}hus, {H}g {CSIC} analysis in mammals can be a powerful tool for tracing the metabolic response to {H}g exposure.},
  keywords = {{RUSSIE} ; {BAIKAL} {LAC}},
  booktitle = {},
  journal = {{M}etallomics},
  volume = {8},
  numero = {2},
  pages = {170--178},
  ISSN = {1756-5901},
  year = {2016},
  DOI = {10.1039/c5mt00286a},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00014293},
}