@article{fdi:010071458,
  title = {{T}otal and methylmercury partitioning between colloids and true solution : from case studies in sediment overlying and porewaters to a generalized model},
  author = {{G}u{\'e}dron, {S}t{\'e}phane and {D}evin, {S}. and {V}ignati, {D}. {A}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}angential flow ultrafiltration was used to determine the partitioning of total mercury ({TH}g) and monomethylmercury ({MMH}g) between colloids and true solution in sediment overlying and porewaters collected in {L}ake {G}eneva ({S}witzerland and {F}rance), {V}enice {L}agoon ({I}taly), and {B}aihua {R}eservoir ({C}hina). {O}verlying water and porewater spanned different ranges of {TH}g and {MMH}g concentrations, redox conditions, and salinity. {T}otal {H}g, {MMH}g, and dissolved organic carbon ({DOC}) concentrations were measured in filter-passing (<0.45m), colloidal (3 k{D}a-0.45m), and truly dissolved (<3k{D}a) fractions. {T}he percentages of filterable {H}g and {MMH}g associated with colloids (arithmetic means +/- 1 standard deviation [{SD}]) were 29 +/- 11% for {TH}g (range, 4-60%) and 44 +/- 17% for {MMH}g (range, 15-65%). {U}ltrafiltration {DOC} mass balances were often not satisfactory. {H}owever, this was apparently without consequences on {TH}g/{MMH}g fractionation, suggesting that only a part of total {DOC} controlled {TH}g/{MMH}g partitioning in overlying water and porewater. {L}inear relationships existed between filter passing and truly dissolved concentrations of {TH}g and {MMH}g, suggesting that mechanisms controlling their partitioning are, at least partly, similar across aquatic systems. {T}hese linear relationships could be extended to data from published studies and ultrafilterable concentrations often could be predicted, within a factor of 2, from the measurement of filter-passing ones. {T}he possibility to easily model {TH}g/{MMH}g partitioning across aquatic systems will facilitate its consideration in general biogeochemical {TH}g/{MMH}g models.},
  keywords = {{M}ercury ; {M}ethylmercury ; {O}verlying water ; {P}orewater ; {C}olloids ; {P}artitioning ; {SUISSE} ; {FRANCE} ; {ITALIE} ; {CHINE} ; {GENEVE} {LAC} ; {VENISE} {LAGON} ; {BAIHUA} {RESERVOIR}},
  booktitle = {},
  journal = {{E}nvironmental {T}oxicology and {C}hemistry},
  volume = {35},
  numero = {2},
  pages = {330--339},
  ISSN = {0730-7268},
  year = {2016},
  DOI = {10.1002/etc.3190},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071458},
}