Determination of Iron, Cobalt, Nickel, and Copper in Hafnium Fluoride by GF-AAS

Jaganathan, J.; Aggarwal, Ishwar D.

doi:10.1366/0003702934048217

Cited by 9 publications

(3 citation statements)

References 7 publications

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“…As a basic substance for the production of advanced functional and structural materials, zirconium dioxide powder has attracted considerable practical interest due to its variety of applications ranging from sensors, insulators, coatings, solid electrolytes for fuel cells, piezoelectric or electro-optic devices, catalysts and engine parts to stationary phases in liquid chromatography (1)(2)(3). Several investigations show that the desired properties and applications of ZrO 2 may be strongly influenced by the addition of minor as well as trace elements (4,5).…”

Section: Introductionmentioning

confidence: 99%

Study of the Simultaneous Determination of Different Volatile Elements in High Purity Zirconium Dioxide by In situ Matrix Removal and ETV-ICP-MS

Chen¹

2016

At.Spectrosc.

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In this work, a novel method was developed for the simultaneous determination of different volatile elements (refractory Cr, medium volatile Cu, and easily volatile Cd) in high purity zirconium dioxide (ZrO 2) by in situ matrix removal and electrothermal vaporization inductively coupled plasma mass spectrometry (ETV-ICP-MS). A polytetrafluoroethylene slurry (PTFE) as a chemical modifier not only enhanced the difference in the volatility between the analytes and the matrix for in situ matrix removal, but also results in their similar vaporization behaviors of the different volatile elements (Cr, Cu, and Cd) for their simultaneous determination. Under optimum operating conditions, the detection limits (DLs) for Cr, Cu, and Cd were 2.5, 9.8, and 3.4 ng g-1 with relative standard deviations (RSDs) of less than 6.2%, respectively. The calibration graphs of the analytes were linear over three orders of magnitude. This method was applied to the simultaneous determination of the different volatile elements Cr, Cu, and Cd in high purity ZrO 2 , and the results were in good agreement with those obtained by conventional pneumatic nebulization (PN) ICP-MS after separation of the matrix with a solvent extraction procedure.

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Section: Introductionmentioning

confidence: 99%

Study of the Simultaneous Determination of Different Volatile Elements in High Purity Zirconium Dioxide by In situ Matrix Removal and ETV-ICP-MS

Chen¹

2016

At.Spectrosc.

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“…1,2 In the area of materials science, especially mixed with the oxides of Si, Ti, Al, Cu, W, Ni and the rare earth elements, ZrO 2 -based materials are used as insulators and coatings, solid electrolytes for fuel cells, piezoelectric or electro-optic devices, catalysts and as packing materials in liquid chromatography. 3,4 The optical, surface and electrical characteristics of ZrO 2 , and its redox properties and catalytic activity for reduction and hydration of CO, CO 2 and NO are considerably influenced by traces of some elements. 3,4 Also, the synthesis of functional zirconia-based ceramics and their application may be strongly affected by the presence of trace impurities.…”

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confidence: 99%

“…3,4 The optical, surface and electrical characteristics of ZrO 2 , and its redox properties and catalytic activity for reduction and hydration of CO, CO 2 and NO are considerably influenced by traces of some elements. 3,4 Also, the synthesis of functional zirconia-based ceramics and their application may be strongly affected by the presence of trace impurities. Therefore, more knowledge about the role of trace impurities is necessary for improving the properties of these materials.…”

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confidence: 99%

In-situ electrothermal fluorination-assisted matrix removal, slurry sampling, graphite furnace atomic absorption spectrometry for the determination of trace-level chromium, cobalt and vanadium in zirconium dioxide powder

Wang

et al. 2001

J. Anal. At. Spectrom.

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An in-situ electrothermal fluorination-assisted matrix removal method was developed with PTFE as chemical modifier, and trace-levels of Cr, Co and V in ZrO 2 powder were determined. The solid samples were directly introduced into the graphite furnace in the form of a slurry, where the Zr matrix reacted with the active carbon fluoride formed by electrothermal decomposition of PTFE during the pyrolysis stage. Without loss of analytes, the Zr matrix was completely vaporized and removed by the carrier gas. As a result, the matrix interference, which was serious without the modifier, was effectively suppressed, and the chemical attack of the excess of the Zr matrix on the graphite tube was also minimized. The standard additions calibration and the aqueous standard calibration were compared and similar results were obtained. The removal of matrix, the background absorption, the chemical modification of PTFE and the temperature-time program of the graphite furnace were investigated and optimized. The proposed method was applied to the direct determination of trace amounts of Cr, Co and V in ZrO 2 powder with aqueous calibration and the results obtained were in good agreement with those obtained by pneumatic nebulization ICP-AES after digestion and separation of the matrix Zr with PMBP extraction. The detection limits of Cr, Co and V were 0.20, 0.32 and 3.7 mg g 21 , respectively.

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1998

Atomic Absorption Spectrometry

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Determination of Iron, Cobalt, Nickel, and Copper in Hafnium Fluoride by GF-AAS

Cited by 9 publications

References 7 publications

Study of the Simultaneous Determination of Different Volatile Elements in High Purity Zirconium Dioxide by In situ Matrix Removal and ETV-ICP-MS

Study of the Simultaneous Determination of Different Volatile Elements in High Purity Zirconium Dioxide by In situ Matrix Removal and ETV-ICP-MS

In-situ electrothermal fluorination-assisted matrix removal, slurry sampling, graphite furnace atomic absorption spectrometry for the determination of trace-level chromium, cobalt and vanadium in zirconium dioxide powder

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