@inproceedings{fdi:010025634,
  title = {{H}ydrological control on the temporal variability of mercury in surface waters of the upper {M}adeira basin rivers, {B}olivia},
  author = {{M}aurice {B}ourgoin, {L}aurence and {F}raizy, {P}ascal and {A}lanoca, {L}. and {S}eyler, {P}atrick and {G}uyot, {J}ean-{L}oup},
  editor = {},
  language = {{ENG}},
  abstract = {{M}ercury contamination of waters and soils is an environmental problem of increasing concern throughout the {A}mazon {R}iver baxin. {I}n order to better understand the sources of {H}g in a major tributary to the {A}mazon, a monthly time series spanning an entire hydrological cycle has been measured for two rivers of the {U}pper {M}adeira drainage basin. {A}t both gauging stations, we observe a hydrological control on the temporal variability of the dissolved and the total mercury ({TH}g) concentrations: they increase in phase with increasing discharge and we observe the highest {TH}g concentrations at the peak stage. {M}ercury associated with particles represents more than 90% of the {TH} g in high-water period, and tends to decrease only slowly with falling river stage. {T}his suggests that weathering processes are still active during this last stage. {O}ne of the principal factors controlling the distribution of {H}g in {A}ndean waters is apparently the process of soil erosion. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{MERCURE} ; {EAU} {DE} {SURFACE} ; {CONTAMINATION} ; {POLLUTION} {DES} {EAUX} {CONTINENTALES} ; {COURS} {D}'{EAU} ; {CYCLE} {HYDROLOGIQUE} ; {BOLIVIE} ; {AMAZONIE} ; {MADEIRA} {FLEUVE}},
  numero = {},
  pages = {5  multigr.},
  booktitle = {{I}nternational conference on heavy metals in the environment},
  year = {2000},
  URL = {https://www.documentation.ird.fr/hor/fdi:010025634},
}