@article{fdi:010048317,
  title = {{M}ercury distribution and exchanges between the {A}mazon {R}iver and connected floodplain lakes},
  author = {{D}utra {M}aia, {P}oliana and {M}aurice {B}ourgoin, {L}aurence and {T}essier, {E}. and {A}mouroux, {D}. and {C}ossa, {D}. and {P}erez, {M}. and {M}oreira {T}urcq, {P}atricia and {R}h{\'e}ault, {I}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his work presents the distribution and the partition of mercury ({H}g) in the {C}uruai floodplain lakes along the {A}mazon {R}iver. {T}he maximum {T}otal {F}iltered {H}g ({T}-{FH}g) concentrations in the floodplain lakes (28 to 52 pmol {L}-1) coincide with the maximum {T}-{FH}g concentrations of the {A}mazon {R}iver and are measured during the flooding period. {T}he lowest {T}-{FH}g values (3 to 5 pmol {L}-1) are observed during the flood peak of the mainstream, during the rainy season, when waters are diluted by the local rainfall. {I}n this system, {H}g is mainly transported in the particulate phase, confirmed by elevated values of the {H}g partition coefficient (4.77 < {K}-d ({H}g) < 5.83 {L}kg(-1)). {T}he highest {T}otal {P}articulate {H}g ({T}-{PH}g) concentrations (47-478 pmol {L}-1) in the lakes are measured during the dry season when they are isolated from the mainstream. {T}his enrichment is due to the elevated {TSS} content associated to the re-suspension of the bottom sediments by the wind action and the bioturbation in shallow water lakes. {I}n the flooded system, the lakes show different geochemical characteristics that control the {H}g distribution and partition. {I}n the white water ({WW}) lakes, characterized by oxidative neutral waters and highest {TSS} contents (till 2041 mg {L}-1), the {T}-{PH}g is associated to the particulate organic matter mainly during the dry season, while the {T}-{FH}g and {T}-{FM}n concentrations are correlated. {I}n the black water ({BW}) lakes that show reductive p{H} conditions and lowest {TSS} load (2 to 52 mg {L}-1), {P}-iron and {T}-{PH}g display a positive relationship whereas the redox conditions favor the desorption of {H}g from the particulate to the filtered phase. {T}he mercury mass budget estimated in this study confirms that the {C}uruai floodplain system acts as a particulate mercury trap, with a net storage of particulate {H}g of 150 kg {PH}g year(-1).},
  keywords = {{M}ercury ; {W}ater ; {S}uspended sediments ; {A}mazon {R}iver ; {F}loodplain lakes ; {F}luxes},
  booktitle = {},
  journal = {{S}cience of the {T}otal {E}nvironment},
  volume = {407},
  numero = {23},
  pages = {6073--6084},
  ISSN = {0048-9697},
  year = {2009},
  DOI = {10.1016/j.scitotenv.2009.08.015},
  URL = {https://www.documentation.ird.fr/hor/fdi:010048317},
}