@article{PAR00008784,
  title = {{X}-ray absorption fine structure evidence for amorphous zinc sulfide as a major zinc species in suspended matter from the {S}eine river downstream of {P}aris, {I}le-de-{F}rance, {F}rance},
  author = {{P}riadi, {C}. and {L}e {P}ape, {P}. and {M}orin, {G}uillaume and {A}yrault, {S}. and {M}aillot, {F}. and {J}uillot, {F}arid and {H}ochreutener, {R}. and {L}lorens, {I}. and {T}estemale, {D}. and {P}roux, {O}. and {B}rown, {G}. {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{Z}inc is one of the most widespread trace metals ({TM}s) in {E}arth surface environments and is the most concentrated {TM} in the downstream section of the {S}eine {R}iver ({F}rance) due to significant anthropogenic input from the {P}aris conurbation. {I}n order to better identify the sources and cycling processes of {Z}n in this {R}iver basin, we investigated seasonal and spatial variations of {Z}n speciation in suspended particulate matter ({SPM}) in the oxic water column of the {S}eine {R}iver from upstream to downstream of {P}aris using synchrotron-based extend {X}-ray absorption fine structure ({EXAFS}) spectroscopy at the {Z}n {K}-edge. {F}irst-neighbor contributions to the {EXAFS} were analyzed in {SPM} samples, dried and stored under a dry nitrogen atmosphere or under an ambient oxygenated atmosphere. {W}e found a sulfur first coordination environment around {Z}n (in the form of amorphous zinc sulfide) in the raw {SPM} samples stored under dry nitrogen vs an oxygen first coordination environment around {Z}n in the samples stored in an oxygenated atmosphere. {T}hese findings are supported by scanning electron microscopy and energy dispersive {X}-ray spectrometry observations. {L}inear combination fitting of the {EXAFS} data for {SPM} samples, using a large set of {EXAFS} spectra of {Z}n model compounds, indicates dramatic changes in the {Z}n speciation from upstream to downstream of {P}aris, with amorphous {Z}n{S} particles becoming dominant dowstream. {I}n contrast, {Z}n species associated with calcite (either adsorbed or incorporated in the structure) are dominant upstream. {O}ther {Z}n species representing about half of the {Z}n pool in the {SPM} consist of {Z}n-sorbed on iron oxyhydroxides (ferrihydrite and goethite) and, to a lesser extent, {Z}n-{A}l layered double hydroxides, {Z}n incorporated in dioctahedral layers of clay minerals and {Z}n sorbed to amorphous silica. {O}ur results highlight the importance of preserving the oxidation state in {TM} speciation studies when sampling suspended matter, even in an oxic water column.},
  keywords = {},
  booktitle = {},
  journal = {{E}nvironmental {S}cience and {T}echnology},
  volume = {46},
  numero = {7},
  pages = {3712--3720},
  ISSN = {0013-936{X}},
  year = {2012},
  DOI = {10.1021/es2041652},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00008784},
}