Strontium isotope ratios in fossil teeth from South Africa: assessing laser ablation MC-ICP-MS analysis and the extent of diagenesis

2010 ◽  
Vol 37 (7) ◽  
pp. 1437-1446 ◽  
Author(s):  
Sandi R. Copeland ◽  
Matt Sponheimer ◽  
Julia A. Lee-Thorp ◽  
Petrus J. le Roux ◽  
Darryl J. de Ruiter ◽  
...  
Keyword(s):  
South Africa ◽  
Laser Ablation ◽  
Isotope Ratios ◽  
Strontium Isotope ◽  
Ms Analysis ◽  
Icp Ms ◽  
Strontium Isotope Ratios

scholarly journals IsoFishR: An application for reproducible data reduction and analysis of strontium isotope ratios (87Sr/86Sr) obtained via laser-ablation MC-ICP-MS

PLoS ONE ◽  
2018 ◽  
Vol 13 (9) ◽  
pp. e0204519 ◽  
Author(s):  
Malte Willmes ◽  
Katherine M. Ransom ◽  
Levi S. Lewis ◽  
Christian T. Denney ◽  
Justin J. G. Glessner ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Data Reduction ◽  
Isotope Ratios ◽  
Strontium Isotope ◽  
Icp Ms ◽  
Strontium Isotope Ratios

Retrospective determination of natal habitats for an estuarine fish with otolith strontium isotope ratios

2005 ◽  
Vol 56 (5) ◽  
pp. 655 ◽  
Author(s):  
James A. Hobbs ◽  
Qing-zhu Yin ◽  
Jessica Burton ◽  
William A. Bennett
Keyword(s):  
Laser Ablation ◽  
San Francisco ◽  
Isotope Ratios ◽  
Core Region ◽  
Strontium Isotope ◽  
Estuarine Fish ◽  
Delta Smelt ◽  
The Core ◽  
Relative Standard ◽  
Strontium Isotope Ratios

We investigated the ability of strontium isotope ratios (87Sr/86Sr) in otolith cores to record the natal habitats of juvenile delta smelt Hypomesus transpacificus from the San Francisco Estuary, USA. Young delta smelt (<60 days old) were collected during the California Department of Fish and Game 20-mm Survey in May and June of 1999 at several potential natal areas: Napa River, Suisun Marsh, West Delta, North Delta, Central Delta, South Delta and East Delta. The core region of sagittal otoliths was assayed with laser ablation-multicollector inductively coupled plasma mass spectroscopy. The laser ablation technique provided precise estimates of 87Sr : 86Sr ratios with relative standard deviation of 0.003% (one sigma). Isotope ratios ranged from 0.7065 to 0.708 and were different among natal habitats. However, natal habitats within the delta region were not discernable among each other, and reflect the mixing of the two major rivers, Sacramento River and San Joaquin River within the delta. We will therefore be able to determine natal habitats for delta smelt by assaying the core region of the otoliths. The application of strontium isotope ratios (87Sr/86Sr) in fish otoliths will greatly improve conservation efforts for this protected species.

scholarly journals Quantitative Determination of the Surface Distribution of Supported Metal Nanoparticles: A Laser Ablation–ICP–MS Based Approach

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 77
Author(s):  
Davide Spanu ◽  
Gilberto Binda ◽  
Marcello Marelli ◽  
Laura Rampazzi ◽  
Sandro Recchia ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Laser Ablation ◽  
Quantitative Determination ◽  
Metal Nanoparticles ◽  
Total Mass ◽  
Functional Materials ◽  
Metal Extraction ◽  
Ms Analysis ◽  
Icp Ms

A laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) based method is proposed for the quantitative determination of the spatial distribution of metal nanoparticles (NPs) supported on planar substrates. The surface is sampled using tailored ablation patterns and the data are used to define three-dimensional functions describing the spatial distribution of NPs. The volume integrals of such interpolated surfaces are calibrated to obtain the mass distribution of Ag NPs by correlation with the total mass of metal as determined by metal extraction and ICP–MS analysis. Once this mass calibration is carried out on a sacrificial sample, quantifications can be performed over multiple samples by a simple micro-destructive LA–ICP–MS analysis without requiring the extraction/dissolution of metal NPs. The proposed approach is here tested using a model sample consisting of a low-density polyethylene (LDPE) disk decorated with silver NPs, achieving high spatial resolution over cm2-sized samples and very high sensitivity. The developed method is accordingly a useful analytical tool for applications requiring both the total mass and the spatial distribution of metal NPs to be determined without damaging the sample surface (e.g., composite functional materials and NPs, decorated catalysts or electrodic materials).

scholarly journals In-situ determination of antimony isotope ratios in Sb minerals by femtosecond LA-MC-ICP-MS

2021 ◽  
Author(s):  
Andreas Benjamin Kaufmann ◽  
Marina Lazarov ◽  
Stefan Kiefer ◽  
Juraj Majzlan ◽  
Stefan Weyer
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Isotope Ratios ◽  
Icp Ms

Here we present a method for in-situ determination of stable antimony (Sb) isotope compositions by ultraviolet (UV)-femtosecond-laser-ablation-multi-collector-ICP-MS (fs-LA-MC-ICP-MS). Metallic antimony and a number of Sb minerals (stibnite, senarmontite, chalcostibite, tetrahedrite,...

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