Nitzsche, Kai Nils ; Yoshimura, Toshihiro ; Ishikawa, Naoto F. ; Kawahata, Hodaka ; Ogawa, Nanako O. ; Suzuki, Katsuhiko ; Araoka, Daisuke ; Ohkouchi, Naohiko (2024)
Zinc isotope fractionation during the sorption of Zn to minerals and organic matter in sediment cores affected by anthropogenic pollution.
In: Applied Geochemistry, 2024, 169
doi: 10.26083/tuprints-00027719
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
Zinc stable isotopes (δ⁶⁶Zn) serve as a widely fingerprinting tool for detecting anthropogenic Zn contamination. However, there is a limited understanding of δ⁶⁶Zn behavior during the sorption of Zn to minerals and organic matter. In this study, we have determined the δ⁶⁶Zn values in specific fractions to investigate their effectiveness in tracing anthropogenic Zn. The revised Community Bureau of Reference (BCR) extraction procedure was applied to a coastal marine core from Osaka Bay and from a lacustrine core from Lake Biwa, both with a history of anthropogenic metal pollution. The δ⁶⁶Zn values varied from −0.14 ‰ to +1.00 ‰ across the four to five chemical fractions with up to 0.9 ‰ variation within a single horizon. The highest δ⁶⁶Zn values in the acid-soluble fraction (up to +1.00 ‰) could be explained by the preferential sorption of ⁶⁶Zn to carbonates and/or the preferential incorporation of ⁶⁶Zn into calcite. The complex isotopic fractionation during the sorption of Zn to and co-precipitation with Fe–Mn oxyhydroxides likely resulted in an unclear pattern of the δ⁶⁶Zn values of the reducible fraction. Low δ⁶⁶Zn values in the oxidizable fraction (Osaka Bay) agree with the ⁶⁴Zn enrichment in phytoplankton. Higher δ⁶⁶Zn values of the reducible and oxidizable fractions of the Lake Biwa core indicate that environmental conditions (e.g. ionic strength) and for instance different phytoplankton species or dissolved and suspended particulate matter input drive the Zn isotope fractionation depending on the system (marine vs. lacustrine). The δ⁶⁶Zn values of the acid-soluble fraction (Osaka Bay and Lake Biwa), of the reducible fraction (only Lake Biwa) and of oxidizable fraction (only Osaka Bay) better reflected the temporal changes in the Zn concentration than the bulk sediment, indicating that these fractions could be a sensitive fingerprinting tool for anthropogenic Zn contamination.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Nitzsche, Kai Nils ; Yoshimura, Toshihiro ; Ishikawa, Naoto F. ; Kawahata, Hodaka ; Ogawa, Nanako O. ; Suzuki, Katsuhiko ; Araoka, Daisuke ; Ohkouchi, Naohiko |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Zinc isotope fractionation during the sorption of Zn to minerals and organic matter in sediment cores affected by anthropogenic pollution |
| Sprache: | Englisch |
| Publikationsjahr: | 31 Juli 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2024 |
| Ort der Erstveröffentlichung: | Amsterdam |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Geochemistry |
| Jahrgang/Volume einer Zeitschrift: | 169 |
| Kollation: | 11 Seiten |
| DOI: | 10.26083/tuprints-00027719 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/27719 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | Zinc stable isotopes (δ⁶⁶Zn) serve as a widely fingerprinting tool for detecting anthropogenic Zn contamination. However, there is a limited understanding of δ⁶⁶Zn behavior during the sorption of Zn to minerals and organic matter. In this study, we have determined the δ⁶⁶Zn values in specific fractions to investigate their effectiveness in tracing anthropogenic Zn. The revised Community Bureau of Reference (BCR) extraction procedure was applied to a coastal marine core from Osaka Bay and from a lacustrine core from Lake Biwa, both with a history of anthropogenic metal pollution. The δ⁶⁶Zn values varied from −0.14 ‰ to +1.00 ‰ across the four to five chemical fractions with up to 0.9 ‰ variation within a single horizon. The highest δ⁶⁶Zn values in the acid-soluble fraction (up to +1.00 ‰) could be explained by the preferential sorption of ⁶⁶Zn to carbonates and/or the preferential incorporation of ⁶⁶Zn into calcite. The complex isotopic fractionation during the sorption of Zn to and co-precipitation with Fe–Mn oxyhydroxides likely resulted in an unclear pattern of the δ⁶⁶Zn values of the reducible fraction. Low δ⁶⁶Zn values in the oxidizable fraction (Osaka Bay) agree with the ⁶⁴Zn enrichment in phytoplankton. Higher δ⁶⁶Zn values of the reducible and oxidizable fractions of the Lake Biwa core indicate that environmental conditions (e.g. ionic strength) and for instance different phytoplankton species or dissolved and suspended particulate matter input drive the Zn isotope fractionation depending on the system (marine vs. lacustrine). The δ⁶⁶Zn values of the acid-soluble fraction (Osaka Bay and Lake Biwa), of the reducible fraction (only Lake Biwa) and of oxidizable fraction (only Osaka Bay) better reflected the temporal changes in the Zn concentration than the bulk sediment, indicating that these fractions could be a sensitive fingerprinting tool for anthropogenic Zn contamination. |
| Freie Schlagworte: | Anthropogenic contamination, Isotopic fractionation, Sediment, Sequential extraction, Sorption, Zinc stable isotopes |
| ID-Nummer: | Artikel-ID: 106047 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-277196 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Bodenmineralogie und Bodenchemie |
| Hinterlegungsdatum: | 31 Jul 2024 13:34 |
| Letzte Änderung: | 01 Aug 2024 09:39 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
- Zinc isotope fractionation during the sorption of Zn to minerals and organic matter in sediment cores affected by anthropogenic pollution. (deposited 31 Jul 2024 13:34) [Gegenwärtig angezeigt]
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum