Determination of trace impurities in tantalum oxide and niobium oxide by laser ablation inductively coupled plasma mass spectrometry

Anderson, Stan T. G.; Robért, Robbie V. D.; Farrer, Humphrey N.

doi:10.1039/ja9920701195

Cited by 14 publications

(3 citation statements)

References 19 publications

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“…Addition of laser ablation as a sample preparation step has allowed the direct determination of many elements in solid samples [6][7][8][9]. The majority of applications of the technique have been in the area of inorganic analysis [10][11][12][13][14]. Whilst it is very convenient to use laser ablation, the procedures for calibration are necessarily complex.…”

Section: Introductionmentioning

confidence: 99%

Trace element profiling of dental tissues using laser ablation-inductively coupled plasma-mass spectrometry

Cox

Keenan

Cooke

et al. 1996

Fresenius J Anal Chem

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Laser ablation-inductively coupled plasmamass spectrometry has been used to generate elemental fingerprints of individual teeth, which have been sectioned to provide a sample which represents the time axis of tooth development. The ablated area is of the order of 100 µm across, and the ablation process is reproducible, measured using phosphorus. Studies on modern teeth reveal that the mercury and gold concentrations decrease from the outer (mouth exposed) part of the tooth to the inner newly deposited material. In contrast, the lead content increases from the outer part to the inner reflecting the exogenous origin of the mercury and gold, and the endogenous origin of the lead from the blood supply. Studies on a 19th century tooth from Spitzbergen reveal the presence of a range of lanthanide elements which occur naturally in the area. Studies of the concentrations of other elements present in teeth permit the comparison of data between teeth via the use of element/element ratios. The calcium/phosphorus ratio is recommended for this purpose.

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Section: Introductionmentioning

confidence: 99%

Trace element profiling of dental tissues using laser ablation-inductively coupled plasma-mass spectrometry

Cox

Keenan

Cooke

et al. 1996

Fresenius J Anal Chem

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“…Although it has been reported that ion intensity spikes can interfere with analyte signals, the processes leading to this phenomenon are not well known. 18,19 Therefore, further investigations were performed to attempt to understand the signal ¯uctuations of LA-ICP-MS using SiC as target material. Fig.…”

Section: Time-resolved Signal Studiesmentioning

confidence: 99%

Studies on the quantitative analysis of trace elements in single SiC crystals using laser ablation-ICP-MS

Hoffmann¹,

Lüdke²,

Skole³

et al. 1999

J. Anal. At. Spectrom.

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“…Although laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been applied to the direct analysis of niobium pentaoxide with somewhat lower LODs, 6 this method suffered from calibration problems because of the requirement for solid standards with the same components as samples, and the accuracy was influenced in some ways. When electrothermal atomic absorption spectrometry (ETAAS) was developed for the direct analysis of niobium pentaoxide, up to 15 mg of the niobium pentaoxide sample were loaded onto the platform vaporizer for determination of trace metals (Al, Co, Cr, Cu, Fe, Mn and Ni), and during the pyrolysis stage, the niobium pentaoxide matrix was converted into the thermally stable niobium carbide using a methane atmosphere, with the aim of avoiding the serious matrix-caused non-spectral interferences and background.…”

Section: Introductionmentioning

confidence: 99%

Direct determination of trace impurities in niobium pentaoxide solid powder with slurry sampling fluorination assisted electrothermal vaporization inductively coupled plasma mass spectrometry

Jiang

2004

J. Anal. At. Spectrom.

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A method of fluorination assisted electrothermal vaporization inductively coupled plasma mass spectrometry (FETV-ICP-MS) was developed to directly determine the trace impurities in niobium pentaoxide solid powder in which a poly(tetrafluoroethylene) (PTFE) emulsion was used as fluorinating modifier to promote the vaporization of refractory elements from a graphite furnace and to avoid the formation of thermally stable carbides. The solid sample was introduced into the graphite furnace in the form of slurry without any chemical pretreatments. The electrothermal vaporizer device was connected to the ICP system by a laboratory-built interface, and the flow rates of sample carrier gas and auxiliary carrier gas were optimized experimentally. The potentially polyatomic interferences resulting from the pyrolysates of PTFE were evaluated. A new method by stepwise diluting the sample matrix is proposed for investigating the matrix effect and the results showed that no obvious matrix effect was observed with a sample matrix (Nb 2 O 5 ) concentration of less than 200 mg L 21 . Under the optimal conditions, the absolute limits of detection for FETV-ICP-MS determination of Ta, Ti, Cr, W, Ni, Cu and Mn were in the range of 0.026-1.1 pg. For one analysis run, only 0.002 mg of Nb 2 O 5 sample was required. The proposed method has been applied to determining the trace impurities in Nb 2 O 5 powder, and both the results obtained from the external calibration method and the standard addition method were in a good agreement with those obtained by conventional nebulization ICP-MS.

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Determination of trace impurities in tantalum oxide and niobium oxide by laser ablation inductively coupled plasma mass spectrometry

Cited by 14 publications

References 19 publications

Trace element profiling of dental tissues using laser ablation-inductively coupled plasma-mass spectrometry

Trace element profiling of dental tissues using laser ablation-inductively coupled plasma-mass spectrometry

Studies on the quantitative analysis of trace elements in single SiC crystals using laser ablation-ICP-MS

Direct determination of trace impurities in niobium pentaoxide solid powder with slurry sampling fluorination assisted electrothermal vaporization inductively coupled plasma mass spectrometry

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