@article{fdi:010079776,
  title = {{B}ehavior of metallurgical zinc contamination in coastal environments : a survey of {Z}n from electroplating wastes and partitioning in sediments},
  author = {{T}onha, {M}. {S}. and {G}arnier, {J}. and {A}raujo, {D}. {F}. and {C}unha, {B}. {C}. {A}. and {M}achado, {W}. and {D}antas, {E}. and {A}raujo, {R}. and {K}utter, {V}. {T}. and {B}onnet, {M}arie-{P}aule and {S}eyler, {P}atrick},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he contamination of coastal environments by metallurgical wastes involves multiple biogeochemical processes; accordingly, understanding metal behavior and risk evaluation of contaminated areas, such as {S}epetiba {B}ay ({R}io de {J}aneiro. {B}razil), remains challenging. {T}his study coupled {Z}n isotopic analyses with sequential extractions ({BCR}) to investigate the mechanisms of {Z}n transfer between legacy electroplating waste and the main environments in {S}epetiba {B}ay. {T}his metallurgical waste showed a light bulk isotopic signature (delta(66/64) {Z}nbulk({JMC} )= +0.30 +/- 0.01 parts per thousand 2 s, n = 3) that was not distinct from the lithogenic geochemical baseline, but was different from signature of mangrove sediment considered as anthropogenic end member (delta(66/64) {Z}n-{JMC} = +0.86 +/- 0.15 parts per thousand) in a previous isotopic study in this area. {Z}n isotopic compositions of sediment samples (ranging from +0.20 to +0.98 parts per thousand) throughout the bay fit a mixing model involving multiple sources, consistent with previous studies. {I}n the metallurgic zone, the exchangeable/carbonate fraction ({Z}n{F}1) exhibited high {Z}n concentrations ({Z}n{F}1 9840 mu g g(-1)) and a heavy isotopic composition (delta(66/64) {Z}n{F}1({JMC}) = +1.10 +/- 0.01 parts per thousand). {T}his finding showed that, in some cases, the bulk isotopic signature of waste is not the most relevant criterion for evaluating trace metal dispersion in the environment. {I}ndeed, based on the {BCR}. it was observed that part of the anthropogenic metallurgical {Z}n was redistributed from the exchangeable/carbonate fraction in the waste to the surrounding mangrove sediment. {T}hen, this contaminated sediment with heavy delta(66/64) {Z}n values was exported to other coastal environments. {I}n {S}epetiba {B}ay, contaminated sediments revealed a large concentration of {Z}n{F}1 fraction (up to 400 mu g g(-1)) with a heavy {Z}n isotopic signature. {T}his signature also matched the {Z}n isotopic signature of oysters in {S}epetiba {B}ay reported by other studies; hence, measurement of the isotopic exchangeable/carbonate fraction has important implications for tracing the transfer of anthropogenic {Z}n to biota.},
  keywords = {{Z}inc isotopes ; {S}equential extraction ; {Z}inc speciation ; {B}ioavailability ; {M}etallurgical wastes ; {C}oastal environment ; {BRESIL} ; {RIO} {DE} {JANEIRO} ; {SEPETIBA} {BAIE}},
  booktitle = {},
  journal = {{S}cience of the {T}otal {E}nvironment},
  volume = {743},
  numero = {},
  pages = {140610 [14 p.]},
  ISSN = {0048-9697},
  year = {2020},
  DOI = {10.1016/j.scitotenv.2020.140610},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079776},
}