About: Common occurrence of a positive δ53Cr shift in Central European waters contaminated by geogenic/industrial chromium relative to source values     Goto   Sponge   NotDistinct   Permalink

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Description
  • Carcinogenic effects of hexavalent chromium in waters are of concern in many countries worldwide. We explored Cr isotope systematics at 11 sites in the Czech Republic and Poland. Geogenic Cr pollution was associated with serpentinite bodies at former convergent plate margins, while anthropogenic Cr pollution resulted from electroplating, tanning, and chemical industry. Cr(VI) concentration in geogenic waters was less than 40 ppb. Anthropogenic waters contained up to 127,000 ppb Cr(VI). At both geogenic and anthropogenic sites, where known, the source of pollution had a low δ53Cr (<1 promile). δ53Cr of geogenic and anthropogenic waters was up to 3.9 and 5.8 promile, respectively. At both serpentinite-dominated and industrial sites, δ53Cr(VI)aq was shifted toward higher values, compared to the pollution source. At the industrial sites, this positive δ53Cr shift was related to Cr(VI) reduction, a process known to fractionate Cr isotopes. At geogenic sites, the origin of high δ53Cr(VI)aq is tentatively ascribed to preferential release of 53Cr during oxidation of soil Cr(III) and its mobilization to water. δ53Cr(VI) of industrially contaminated waters was significantly higher (p<0.001) compared to δ53Cr of waters carrying geogenic Cr (VI), implying that either the effective fractionation factor or process extent were greater for Cr(VI) reduction than for Cr(III) oxidation.
  • Carcinogenic effects of hexavalent chromium in waters are of concern in many countries worldwide. We explored Cr isotope systematics at 11 sites in the Czech Republic and Poland. Geogenic Cr pollution was associated with serpentinite bodies at former convergent plate margins, while anthropogenic Cr pollution resulted from electroplating, tanning, and chemical industry. Cr(VI) concentration in geogenic waters was less than 40 ppb. Anthropogenic waters contained up to 127,000 ppb Cr(VI). At both geogenic and anthropogenic sites, where known, the source of pollution had a low δ53Cr (<1 promile). δ53Cr of geogenic and anthropogenic waters was up to 3.9 and 5.8 promile, respectively. At both serpentinite-dominated and industrial sites, δ53Cr(VI)aq was shifted toward higher values, compared to the pollution source. At the industrial sites, this positive δ53Cr shift was related to Cr(VI) reduction, a process known to fractionate Cr isotopes. At geogenic sites, the origin of high δ53Cr(VI)aq is tentatively ascribed to preferential release of 53Cr during oxidation of soil Cr(III) and its mobilization to water. δ53Cr(VI) of industrially contaminated waters was significantly higher (p<0.001) compared to δ53Cr of waters carrying geogenic Cr (VI), implying that either the effective fractionation factor or process extent were greater for Cr(VI) reduction than for Cr(III) oxidation. (en)
Title
  • Common occurrence of a positive δ53Cr shift in Central European waters contaminated by geogenic/industrial chromium relative to source values
  • Common occurrence of a positive δ53Cr shift in Central European waters contaminated by geogenic/industrial chromium relative to source values (en)
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  • Common occurrence of a positive δ53Cr shift in Central European waters contaminated by geogenic/industrial chromium relative to source values
  • Common occurrence of a positive δ53Cr shift in Central European waters contaminated by geogenic/industrial chromium relative to source values (en)
skos:notation
  • RIV/00025798:_____/14:00000231!RIV15-MSM-00025798
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I
http://linked.open...iv/cisloPeriodika
  • 11
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 7864
http://linked.open...ai/riv/idVysledku
  • RIV/00025798:_____/14:00000231
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • chromium, isotopes, waters, contamination (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [79757F37A4BD]
http://linked.open...i/riv/nazevZdroje
  • Environmental Science & Technology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 48
http://linked.open...iv/tvurceVysledku
  • Erbanová, Lucie
  • Farkaš, Juraj
  • Novák, Martin
  • Pašava, Jan
  • Chrastný, Vladislav
  • Přechová, Eva
  • Štěpánová, Markéta
  • Čuřík, Jan
  • Čadková, Eva
  • Bullen, Thomas
  • Tylčer, Jiří
  • Cron, Marcel
  • Hellerich, Lucas
  • Housková, Marie
  • Punčochář, Karel
  • Szurmanová, Zdeňka
http://linked.open...ain/vavai/riv/wos
  • 000336952000006
issn
  • 0013-936X
number of pages
http://bibframe.org/vocab/doi
  • 10.1021/es405615h
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