Trace elements analyses of zircon sample by integration of the LA-ICP-MS, EDS and RBS methods

Helal, A. I.; Zahran, N.F.; Mohamed, Rugayah; Mohsen, H.T.; Becker, J. Sabine; Kobzev, A.P.; Hashad, A.H.

doi:10.1016/s1387-3806(02)00942-9

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…When the samples to be analyzed are in powdered form, they are generally formed into solid targets prior to laser ablation. Because the fusion techniques developed for X-ray fluorescence analysis require the use of high temperatures that may lead to evaporative losses of volatile analytes, a method of choice for solid target preparation in laser ablation is the hydraulic pelletization of powdered samples, often using a suitable binder. For example, soil samples have been pelletized using cellulose, powdered Ag, and even glue as binders, and coal pellets have been prepared with and without KBr binder .…”

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confidence: 99%

Use of Sol−Gels as Solid Matrixes for Trace Analysis by UV Laser Ablation and Laser-Enhanced Ionization Detection

et al. 2004

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Zirconium and silicon sol-gels were investigated as solid materials for trace elemental analysis of pelletized solid samples by laser ablation and laser-enhanced ionization. The highly homogeneous dispersion of an internal standard spiked in the solid material obtained with the sol-gel formation process leads to a significant improvement in signal repeatability and to an increase in the precision of measurements through better correction of variations in the laser ablation rate. Signal repeatability values of 5-8% RSD were obtained for Pb in NIST 1632c Bituminous Coal sample pellets prepared using both sol-gels, as compared to 9-21% for graphite-based sample pellets. Furthermore, the zirconium sol-gel was shown to offer better resilience to signal bias due to preferential ablation and a more accurate correction of ablation rate using the internal standardization method.

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confidence: 99%

Use of Sol−Gels as Solid Matrixes for Trace Analysis by UV Laser Ablation and Laser-Enhanced Ionization Detection

et al. 2004

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“…A multi-technique approach to the characterisation of zircon from Mediterranean beach black sands was described by Helal and colleagues. 136 Laser-ablation ICP-MS, Rutherford back-scattering spectroscopy and EDXRF were used to determine the trace element content of the separated zircon grains. It was concluded that while the EDXRF method could be carried out directly without sample preparation, the precision and accuracy achieved was inferior to that obtained by the sample-fusion based LA-ICP-MS method.…”

Section: Geologicalmentioning

confidence: 99%

Atomic spectrometry update. X-ray fluorescence spectrometry

Potts

Ellis

Kregsamer³

et al. 2003

J. Anal. At. Spectrom.

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6.4 Applications 7 Portable and mobile XRF 8 On-line XRF 9 Applications 9.1 Sample preparation and preconcentration techniques 9.2 Geological 9.3 Environmental 9.4 Archaeological and forensic 9.5 Industrial 9.6 Clinical and biological 9.7 Thin films 9.8 Chemical state analysis and speciation 10 ReferencesThis annual review of X-ray fluorescence covers developments over the period 2002-2003 in instrumentation and detectors, matrix correction and spectrum analysis procedures, X-ray optics and microfluorescence, synchrotron XRF, TXRF, portable XRF and on-line applications as assessed from the published literature. The review also covers a survey of applications, including sample preparation, geological, environmental, archaeological, forensic, biological, clinical, thin films, chemical state and speciation studies. During the current review period, trends were noted in the increased use of principal component analysis in the assessment of environmental data and chemometrics in the interpretation of XRF data in general, meticulous experimentation to model the emission spectra of X-ray tubes to improve the accuracy of FP correction procedures, a slowdown in reports on the development of ultra-high resolution cryogenic ED detectors, the use of EXAFS and XANES in fluorescence, as opposed to the more traditional absorption mode, continued interest in SR sources and interesting artefact measurements performed using XRF and related instrumentation. Instrumentation General instrumentation and excitation sourcesSeveral developments in the design of commercially available X-ray spectrometers feature in the literature during this review

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“…However, the authors considered that the more rapid analysis possible by LA-ICP-MS was a distinct advantage over SIMS dating techniques. In another comparison of techniques, Helal et al 108 used EDS and LA-ICP-MS to determine trace elements in zircon. For ICP-MS analysis, it was necessary to produce lithium borate fused pellets, the homogeneity of which was checked using Rutherford backscattering spectroscopy (RBS).…”

Section: 32mentioning

confidence: 99%