@article{fdi:010078428,
  title = {{M}etals geochemistry and ecological risk assessment in a tropical mangrove ({C}an {G}io, {V}ietnam)},
  author = {{N}guyen {T}hanh-{N}ho and {M}archand, {C}yril and {S}trady, {E}milie and {T}ruong-{V}an {V}inh and {T}ran-{T}hi {N}hu-{T}rang},
  editor = {},
  language = {{ENG}},
  abstract = {{M}angrove sediments act as natural biogeochemical reactors, modifying metals partitioning after their deposition. {T}he objectives of the present study were: to determine distribution and partitioning of metals ({F}e, {M}n, {N}i, {C}r, {C}u, {C}o and {A}s) in sediments and pore-waters of {C}an {G}io {M}angrove; and to assess their ecological risks based on {R}isk {A}ssessment {C}ode. {T}hree cores were collected within a mudflat, beneath {A}vicennia a lba and {R}hizophora apiculata stands. {W}e suggest that most metals had a natural origin, being deposited in the mangrove mainly as oxyhydroxides derived from the upstream lateritic soils. {T}his hypothesis could be supported by the high proportion of metals in the residual fraction (mean values (%): 71.9, 30.7, 80.7, 80.9, 67.9, 53.4 and 66.5 for {F}e, {M}n, {N}i, {C}r, {C}u, {C}o, and {A}s respectively, in the mudflat). {T}he enrichment of mangrove-derived organic matter from the mudflat to the {R}hizophora stand (i.e. up to 4.6% of {TOC}) played a key role in controlling metals partitioning. {W}e suggest that dissolution of {F}e and {M}n oxyhydroxides in reducing condition during decomposition of organic matter may be a major source of dissolved metals in pore-waters. {O}nly {M}n exhibited a potential high risk to the ecosystem. {M}ost metals stocks in the sediments were higher in the {A}vicennia stand than the {R}hizophora stand, possibly because of enhanced dissolution of metal bearing phases beneath later one. {I}n a context of enhanced mangrove forests destruction, this study provides insights on the effects of perturbation and oxidation of sediments on metal release to the environment.},
  keywords = {{VIET} {NAM}},
  booktitle = {},
  journal = {{C}hemosphere},
  volume = {219},
  numero = {},
  pages = {365--382},
  ISSN = {0045-6535},
  year = {2019},
  DOI = {10.1016/j.chemosphere.2018.11.163},
  URL = {https://www.documentation.ird.fr/hor/fdi:010078428},
}