GLORIA

GEOMAR Library Ocean Research Information Access

X
Language
Preferred search index
Number of Hits per Page
Default Sort Criterion
Default Sort Ordering
Size of Search History
Default Email Address
Default Export Format
Default Export Encoding
Facet list arrangement
Maximum number of values per filter
Auto Completion
Topics (search only within journals and journal articles that belong to one or more of the selected topics)
Show more topics
Feed Format
Maximum Number of Items per Feed
Permalink If you want to be able to use settings permanently, you must save your settings and then set a Bookmark to the permalink
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 143-865B; 207-1258A; 207-1258B; 207-1258C; 207-1260A; 342-U1407A; 342-U1409B; 342-U1409C; AGE; Aluminium/Calcium ratio; Atmospheric CO2; Carbon dioxide; Carbon dioxide, standard deviation; climate sensitivity; Comment; Core; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Eocene; Event label; Exp342; Foraminifera, planktic δ11B; GMT; Hole; Joides Resolution; Leg143; Leg207; Magnesium/Calcium ratio; North Pacific Ocean; Paleogene Newfoundland Sediment Drifts; pH; pH, standard deviation; Sea surface temperature; Section; Site; Size fraction; South Atlantic Ocean; Species; surface seawater pH; δ11B, standard deviation  (1)
  • ddc:550.78  (1)
Document type
Keywords
Publisher
Language
Years
  • 1
    facet.materialart.
    Unknown
    Sources of Inaccuracy in Boron Isotope Measurement Using LA‐MC‐ICP‐MS (2023)
    Details
    Publication Date: 2023-11-17
    Description: 〈p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en"〉Laser ablation multi‐collector‐inductively coupled plasma‐mass spectrometry (LA‐MC‐ICP‐MS) has become a valuable tool for the 〈italic toggle="no"〉in situ〈/italic〉 measurement of the boron isotope composition of geological samples at high (tens to hundreds of μm) spatial resolution. That said, this application suffers from significant analytical challenges. We focus in this study on the underlying processes of two of the main causes for inaccuracies using this technique. We provide empirical evidence that not only Ca ions (Sadekov 〈italic〉et al〈/italic〉. 2019, Standish 〈italic〉et al〈/italic〉. 2019, Evans 〈italic〉et al〈/italic〉. 2021) but also Ar ions, that are reflected within the flight tube of the mass spectrometer, are the source for previously reported issues with spectral baselines. We also address the impact of plasma conditions on the instrumental mass fractionation as a source for matrix‐ and mass‐load‐related analytical biases. Comparing experimental data with the results of a dedicated release and diffusion model (RDM) we estimate that a close to complete (~ 97%) release of boron from the sample aerosol is needed to allow for consistently accurate LA boron isotope measurement results without the need for corrections.〈/p〉
    Description: Key Points: 〈list list-type="bullet" id="ggr12500-list-0101"〉 〈list-item〉〈p〉Two separate main sources for inaccuracy of boron isotope measurements by laser ablation: B isotope fractionation in the ICP and the known scattered ion baseline problem.〈/p〉〈/list-item〉 〈list-item〉〈p〉Boron isotope fractionation in the ICP varies systematically with plasma condition (NAI).〈/p〉〈/list-item〉 〈list-item〉〈p〉Behaviour of B isotopes within the ICP simulated by a release and diffusion model (RDM).〈/p〉〈/list-item〉 〈/list〉 〈boxed-text position="anchor" content-type="graphic" id="ggr12511-blkfxd-0001" xml:lang="en"〉 〈graphic position="anchor" id="jats-graphic-1" xlink:href="urn:x-wiley:16394488:media:ggr12511:ggr12511-toc-0001"〉 〈/graphic〉 〈/boxed-text〉 〈/p〉
    Keywords: ddc:550.78 ; boron isotopes ; laser ablation ; scattered ions ; mass fractionation ; plasma conditions
    Language: English
    Type: doc-type:article
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    CITATION GEO-LEO
  • 2
    facet.materialart.
    Unknown
    Boron isotope, Mg/Ca, Al/Ca data and reconstructed pH and CO2 concentrations from IODP sites (2020)
    PANGAEA
    Details
    Publication Date: 2023-09-25
    Description: This dataset includes measurements on mixed layer planktonic foraminifera from IODP/ODP sites for boron isotopes and trace elements. Boron isotopes were measured after column chemistry and solution analyses on a Neptune multi collector ICPMS, while trace elements were measured on pre-columned aliquots of the same samples, using Element XR ICP-MS. Furthermore, the dataset includes the seawater pH and atmospheric CO2 calculated from B isotopes measurements and Mg/Ca-temperature estimates, for no-vital effect treatment (T. sac-vital effect corrections at Eocene d11Bsw conditions result in d11B offsets within analytical uncertainty), and no pH correction on Mg/Ca-temperature relationship (assuming T. sac like species). Carbonate system calculations incorporate MyAMI ion-pairing corrections (https://github.com/MathisHain/MyAMI), and surface Omega values specific for the Eocene and the paleo-latitude of the core location. Propagation of uncertainties for pH and CO2 is completed through 1000 Monte Carlo simulations.
    Keywords: 143-865B; 207-1258A; 207-1258B; 207-1258C; 207-1260A; 342-U1407A; 342-U1409B; 342-U1409C; AGE; Aluminium/Calcium ratio; Atmospheric CO2; Carbon dioxide; Carbon dioxide, standard deviation; climate sensitivity; Comment; Core; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Eocene; Event label; Exp342; Foraminifera, planktic δ11B; GMT; Hole; Joides Resolution; Leg143; Leg207; Magnesium/Calcium ratio; North Pacific Ocean; Paleogene Newfoundland Sediment Drifts; pH; pH, standard deviation; Sea surface temperature; Section; Site; Size fraction; South Atlantic Ocean; Species; surface seawater pH; δ11B, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1239 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...