scholarly journals Validation of depth-profiling LA-ICP-MS in otolith applications

2017 ◽  
Vol 74 (4) ◽  
pp. 572-581 ◽  
Author(s):  
Manna L. Warburton ◽  
Malcolm R. Reid ◽  
Claudine H. Stirling ◽  
Gerry Closs
Keyword(s):  
Laser Ablation ◽  
Depth Profiling ◽  
Spot Size ◽  
Otolith Microchemistry ◽  
Concentration Data ◽  
Lag Effects ◽  
Icp Ms ◽  
Life History Patterns ◽  
Different Origins ◽  
Analytical Power

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.

Ultrafast laser ablation ICP-MS: role of spot size, laser fluence, and repetition rate in signal intensity and elemental fractionation

2014 ◽  
Vol 29 (2) ◽  
pp. 339-346 ◽  
Author(s):  
Prasoon K. Diwakar ◽  
Jhanis J. Gonzalez ◽  
Sivanandan S. Harilal ◽  
Richard E. Russo ◽  
Ahmed Hassanein
Keyword(s):  
Laser Ablation ◽  
Laser Fluence ◽  
Repetition Rate ◽  
Signal Intensity ◽  
Spot Size ◽  
Ultrafast Laser ◽  
Elemental Fractionation ◽  
Icp Ms ◽  
Ultrafast Laser Ablation

scholarly journals Accurate analysis of Fe isotopes in Fe- dominated minerals by excimer laser ablation MC-ICP-MS on wet plasma conditions

2021 ◽  
Vol 42 (5) ◽  
Author(s):  
Honglin Yuan
Keyword(s):  
Water Vapor ◽  
Laser Ablation ◽  
Matrix Effect ◽  
Laser Fluence ◽  
Pulse Repetition Rate ◽  
Isotopic Analysis ◽  
Spot Size ◽  
Nitrogen Gas ◽  
Icp Ms

The Fe isotope ratios can be a useful tracer of geochemistry, biogeochemistry, and the environmental redox state. In this study, we investigated the feasibility of Fe isotopic analysis in Fe-dominated minerals by 193 nm excimer ns laser ablation combined with Nu Plasma 1700 high resolution MC-ICP-MS without matrix-match calibration. Several important instrument parameters were investigated, such as the effect of the addition of nitrogen gas and water vapor, the effects of analytical parameters such as ablation mode, laser fluence, pulse repetition rate, spot size on Fe isotopic mass bias during analysis were investigated as well. The results showed that the effects of ablation mode, spot size, laser pulse repetition rate, and line scan speed can be neglected, while laser fluence and matrix effects had significant influence on the Fe isotopic mass bias at dry plasma condition. These problems can be minimized using consistent lower fluence (1.5‒3.5 J·cm-2), as well as the wet plasma conditions can significantly reduce the matrix effect in Fe isotopic analysis. Fortunately, with the water vapor and nitrogen gas addition after the ablation cell, an accurate and precise Fe isotope in pyrite, manganite, hematite, and chalcopyrite analysis by ns-LA-MC-ICP-MS can be achieved with non-matrix-matched calibration. The obtained accuracy and reproducibility of the in situ determinations of δ56FeIRMM-014 were both better than ± 0.10‰ (2 SD). This study indicated that there was a serious matrix effect in the Fe isotopic analysis of Fe-dominated minerals by ns- LA-MC-ICP-MS, and nitrogen gas mixed with water vapor-assisted ns- LA-MC-ICP-MS were an appealing option for the in situ Fe isotope analysis of Fe-dominated minerals with non-matrix-matched calibration.

Neon Inductively Coupled Plasma for Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry

2002 ◽  
Vol 56 (5) ◽  
pp. 658-664 ◽  
Author(s):  
Caroline M. Petibon ◽  
Henry P. Longerich ◽  
Ingo Horn ◽  
Mike N. Tubrett
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Inductively Coupled Plasma ◽  
Gas Flow ◽  
Concentration Data ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Sensitivity Data ◽  
Varying Mass

The use of a neon inductively coupled plasma (Ne ICP) in place of an argon inductively coupled plasma (Ar ICP) for laser ablation microprobe-inductively coupled plasma-mass spectrometry (LAM-ICP-MS) is demonstrated. Gas blank mass spectra were obtained comparing the signals obtained with an Ar ICP with the Ne ICP. Sensitivity (signal/concentration) data were also obtained for a number of analytes using solid reference materials. The sensitivity data is complicated by significant changes in optimum Ne ICP parameters (especially nebulizer gas flow) for analytes of varying mass. The sensitivity of the Ne ICP is in general also lower than that obtained for the Ar ICP. The potential for the Ne ICP to reduce the formation of argides, both in the background and from sample induced interferences, is demonstrated. Clearly shown is the reduction of the interferences of 63Cu40Ar and 65Cu40Ar on 103Rh and 105Pd in a Cu2S sample, as well as the reduction of the interferences of 58Ni40Ar and 60Ni40Ar on 98Ru and 100Ru in a NiS sample.

A new method to deconvolute binary mixture in LA-ICP-MS analyses to quantify the composition of phases smaller than the laser spot size

2018 ◽  
Vol 33 (9) ◽  
pp. 1518-1528 ◽  
Author(s):  
Longbo Yang ◽  
Vincent J. van Hinsberg ◽  
Iain M. Samson
Keyword(s):  
Laser Ablation ◽  
Binary Mixture ◽  
Spot Size ◽  
New Method ◽  
Laser Spot ◽  
Laser Spot Size ◽  
Ms Analysis ◽  
Icp Ms ◽  
Data Signal

New quantification strategy to deconvolute the data signal of a binary mixture in laser ablation ICP-MS analysis.

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
Keyword(s):  
Laser Ablation ◽  
Glass Surface ◽  
Depth Profiling ◽  
Surface Degradation ◽  
Ancient Glass ◽  
Icp Ms

Laser-ablation MC-ICP-MS lead isotope microanalysis down to 10 μm: application to K-feldspar inclusions within zircon

2018 ◽  
Vol 33 (2) ◽  
pp. 195-204 ◽  
Author(s):  
Hélène Delavault ◽  
Bruno Dhuime ◽  
Chris Hawkesworth ◽  
Horst R. Marschall
Keyword(s):  
Laser Ablation ◽  
Lead Isotope ◽  
Spot Size ◽  
Pb Isotopes ◽  
Routine Procedure ◽  
Mineral Inclusions ◽  
Icp Ms

A routine procedure is presented to analyse Pb isotopes in K-feldspar minerals and mineral inclusions in zircon by LA-MC-ICP-MS, with a spot size down to 10 μm.

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