Laser ablation-ICP-MS depth profiling to study ancient glass surface degradation

2015 ◽  
Vol 407 (12) ◽  
pp. 3377-3391 ◽  
Author(s):  
Serena Panighello ◽  
Johannes T. Van Elteren ◽  
Emilio F. Orsega ◽  
Ligia M. Moretto
2017 ◽  
Vol 74 (4) ◽  
pp. 572-581 ◽  
Author(s):  
Manna L. Warburton ◽  
Malcolm R. Reid ◽  
Claudine H. Stirling ◽  
Gerry Closs

Otolith microchemistry is a widely used technique for elucidating life history patterns in fishes. This typically involves sectioning the otolith and collecting elemental signatures via laser ablation. But this requires time-intensive handling that may influence results. As an alternative to traditional cut–polish–ablate techniques, we tested depth-profiling laser ablation, which offers reduced handling and contamination risk. To validate depth profiling as a robust method for collecting trace element otolith microchemistry data, we constructed composite otoliths using otolith materials from fishes of different origins (fresh water, seawater). Test ablations were conducted on composite diadromous otoliths at a range of spot sizes and pit depths. We measured tailing and fractionation effects in the following elements: Na, Mg, K, Mn, Zn, Rb, Sr, and Ba. Given appropriate instrument parameters, depth profiling can accurately collect elemental concentration data both between and within top and bottom layers of an otolith composite across a range of spot sizes and pit depths. Analytical power and lag effects were dependent on spot size, highlighting the importance of optimizing spot size based on sample morphology and instrument parameters.


2017 ◽  
Author(s):  
Amy K. Plechacek ◽  
◽  
Madeline E. Schreiber ◽  
John A. Chermak ◽  
Tracy L. Bank

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 77
Author(s):  
Davide Spanu ◽  
Gilberto Binda ◽  
Marcello Marelli ◽  
Laura Rampazzi ◽  
Sandro Recchia ◽  
...  

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).


2021 ◽  
pp. 103737
Author(s):  
Yani Xia ◽  
Xiubing Jing ◽  
Dawei Zhang ◽  
Fujun Wang ◽  
Syed Husain Imran Jaffery ◽  
...  

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