@article{fdi:010053099,
  title = {{A}n updated insight into the natural attenuation of {A}s concentrations in {R}eigous {C}reek (southern {F}rance)},
  author = {{E}gal, {M}. and {C}asiot, {C}. and {M}orin, {G}. and {E}lbaz-{P}oulichet, {F}. and {C}ordier, {M}. {A}. and {B}runeel, {O}dile},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he removal of metals and metalloids occurring in acid mine drainage has been studied on different scales (years, days). {D}issolved and particulate concentrations of {F}e and {A}s were monitored over a 4-a period along {R}eigous {C}reek, an acid mine drainage from a former {P}b-{Z}n mine in southern {F}rance. {D}issolved concentrations of {F}e (12-25 mmol {L}-1), {A}s (0.9-3.5 mmol {L}-1) and {SO}42- (10-70 mmol {L}-1) exhibited seasonal variations related to rainfall, with an increase during the driest months. {A}bout 30% of the {A}s initially present in solution as {A}s({III}) was coprecipitated with {F}e oxides in the first 40 m of {R}eigous {C}reek. {T}he corresponding {A}s removal rate was 3.58 x 10(-7) mol {L}-1 s(-1). {T}he mineralogy of resultant precipitates varied spatially and seasonally. {O}ver the first 40 m, amorphous {A}s({V})-{F}e({III}) phases and tooeleite, were formed. {S}ediments deposited in the bed of the creek close to the spring contained both types of solid phases. {L}aminated concretions, which consist of precipitates around bacterial structures, were mainly constituted of tooeleite. {F}urther downstream, these {F}e-oxide phases were replaced by schwertmannite and ferrihydrite. {O}n a daily basis, concentrations of dissolved {F}e and {A}s have been shown to vary up to 10% during the day as a result of photoreduction of {F}e-oxide phases.},
  keywords = {},
  booktitle = {},
  journal = {{A}pplied {G}eochemistry},
  volume = {25},
  numero = {12},
  pages = {1949--1957},
  ISSN = {0883-2927},
  year = {2010},
  DOI = {10.1016/j.apgeochem.2010.10.012},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053099},
}