A New Method for Silicon Triple Isotope Analysis With Application to Siliceous Sponge Spicules
Abstract Multiple isotope ratios of elements disclose information on the fractionation mechanism that cannot be obtained from a single isotope ratio alone. We describe a laser fluorination technique in combination with gas source mass spectrometry for the measurement of triple Si isotope ratios with...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-12-01
|
| Series: | Geochemistry, Geophysics, Geosystems |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2023GC011243 |
| _version_ | 1797368004110974976 |
|---|---|
| author | Andreas Pack Eike‐Matthias Bultmann Michael Tatzel Joachim Reitner |
| author_facet | Andreas Pack Eike‐Matthias Bultmann Michael Tatzel Joachim Reitner |
| author_sort | Andreas Pack |
| collection | DOAJ |
| description | Abstract Multiple isotope ratios of elements disclose information on the fractionation mechanism that cannot be obtained from a single isotope ratio alone. We describe a laser fluorination technique in combination with gas source mass spectrometry for the measurement of triple Si isotope ratios with high precision that allows resolving ppm‐level variability in triple silicon isotope ratios (29Si/28Si, 30Si/28Si) Δ‘29Si due to purely mass‐dependent fractionation in Si isotopes. We demonstrate how the triple silicon isotope ratios can be used to characterize different mass‐dependent processes that fractionate silicon isotopes. We report new data on reference materials (NBS‐28 [RM8546], Diatomite, BigBatch) and on siliceous sponges. Our triple silicon isotope data resolve that kinetic fractionation, possibly related to breaking Si(OH)4 molecules, causes the low δ30Si of sponges. The data further suggest that the cause for fractionation may be the same for the groups of Demospongiae, Homoscleromorpha, and Hexactinellida and that triple silicon isotope ratios of sponges have potential as seawater silicon isotope proxy. |
| first_indexed | 2024-03-08T17:26:16Z |
| format | Article |
| id | doaj.art-0fff86cb687a41b792a7d482d1323c8d |
| institution | Directory Open Access Journal |
| issn | 1525-2027 |
| language | English |
| last_indexed | 2024-03-08T17:26:16Z |
| publishDate | 2023-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geochemistry, Geophysics, Geosystems |
| spelling | doaj.art-0fff86cb687a41b792a7d482d1323c8d2024-01-02T19:00:35ZengWileyGeochemistry, Geophysics, Geosystems1525-20272023-12-012412n/an/a10.1029/2023GC011243A New Method for Silicon Triple Isotope Analysis With Application to Siliceous Sponge SpiculesAndreas Pack0Eike‐Matthias Bultmann1Michael Tatzel2Joachim Reitner3Georg‐August‐Universität Geowissenschaftliches Zentrum Göttingen GermanyGeorg‐August‐Universität Geowissenschaftliches Zentrum Göttingen GermanyGeorg‐August‐Universität Geowissenschaftliches Zentrum Göttingen GermanyGeorg‐August‐Universität Geowissenschaftliches Zentrum Göttingen GermanyAbstract Multiple isotope ratios of elements disclose information on the fractionation mechanism that cannot be obtained from a single isotope ratio alone. We describe a laser fluorination technique in combination with gas source mass spectrometry for the measurement of triple Si isotope ratios with high precision that allows resolving ppm‐level variability in triple silicon isotope ratios (29Si/28Si, 30Si/28Si) Δ‘29Si due to purely mass‐dependent fractionation in Si isotopes. We demonstrate how the triple silicon isotope ratios can be used to characterize different mass‐dependent processes that fractionate silicon isotopes. We report new data on reference materials (NBS‐28 [RM8546], Diatomite, BigBatch) and on siliceous sponges. Our triple silicon isotope data resolve that kinetic fractionation, possibly related to breaking Si(OH)4 molecules, causes the low δ30Si of sponges. The data further suggest that the cause for fractionation may be the same for the groups of Demospongiae, Homoscleromorpha, and Hexactinellida and that triple silicon isotope ratios of sponges have potential as seawater silicon isotope proxy.https://doi.org/10.1029/2023GC011243silicon isotopestriple isotopessponges |
| spellingShingle | Andreas Pack Eike‐Matthias Bultmann Michael Tatzel Joachim Reitner A New Method for Silicon Triple Isotope Analysis With Application to Siliceous Sponge Spicules Geochemistry, Geophysics, Geosystems silicon isotopes triple isotopes sponges |
| title | A New Method for Silicon Triple Isotope Analysis With Application to Siliceous Sponge Spicules |
| title_full | A New Method for Silicon Triple Isotope Analysis With Application to Siliceous Sponge Spicules |
| title_fullStr | A New Method for Silicon Triple Isotope Analysis With Application to Siliceous Sponge Spicules |
| title_full_unstemmed | A New Method for Silicon Triple Isotope Analysis With Application to Siliceous Sponge Spicules |
| title_short | A New Method for Silicon Triple Isotope Analysis With Application to Siliceous Sponge Spicules |
| title_sort | new method for silicon triple isotope analysis with application to siliceous sponge spicules |
| topic | silicon isotopes triple isotopes sponges |
| url | https://doi.org/10.1029/2023GC011243 |
| work_keys_str_mv | AT andreaspack anewmethodforsilicontripleisotopeanalysiswithapplicationtosiliceousspongespicules AT eikematthiasbultmann anewmethodforsilicontripleisotopeanalysiswithapplicationtosiliceousspongespicules AT michaeltatzel anewmethodforsilicontripleisotopeanalysiswithapplicationtosiliceousspongespicules AT joachimreitner anewmethodforsilicontripleisotopeanalysiswithapplicationtosiliceousspongespicules AT andreaspack newmethodforsilicontripleisotopeanalysiswithapplicationtosiliceousspongespicules AT eikematthiasbultmann newmethodforsilicontripleisotopeanalysiswithapplicationtosiliceousspongespicules AT michaeltatzel newmethodforsilicontripleisotopeanalysiswithapplicationtosiliceousspongespicules AT joachimreitner newmethodforsilicontripleisotopeanalysiswithapplicationtosiliceousspongespicules |