Recent trends in sample preparation methods and plasma-based spectrometric techniques for the determination of rare earth elements in geological and fossil fuel samples

2020 ◽  
pp. 1-25
Author(s):  
Mceliseni C. Zuma ◽  
Jaya Lakkakula ◽  
Nomvano Mketo
Keyword(s):  
Rare Earth ◽  
Sample Preparation ◽  
Rare Earth Elements ◽  
Fossil Fuel ◽  
Preparation Methods ◽  
Recent Trends ◽  
Sample Preparation Methods

Sample Preparation Optimization for EDXRF Analysis of Portland Cement

1988 ◽  
Vol 32 ◽  
pp. 221-226
Author(s):  
Wayne Watson ◽  
Jim Parker ◽  
Anthony R. Harding
Keyword(s):  
Sample Preparation ◽  
Portland Cement ◽  
Preparation Methods ◽  
X Ray ◽  
Accuracy And Precision ◽  
Edxrf Analysis ◽  
Analytical Accuracy ◽  
Minimum Detection Limits ◽  
Sample Preparation Methods

AbstractVarious sample preparation methods for Energy Dispersive X-ray Fluorescence (EDXRF) analysis of Portland cement were compared in order to evaluate improvement in analytical accuracy and precision. Sample preparation requirements for EDXRF are slightly different than for Wavelength Dispersive X-ray Fluorescence (WDXRF), and the methods commonly used in WDXRF are not optimized for EDXRF. Primarily, the work focuses on techniques for producing a fused sample with the lowest practical concentration of lithium borate flux. Determination of minimum detection limits were made from samples with varying proportions of flux in order to evaluate analytical optimization. Ease and reproducibility of preparation of the sample was also considered.

Comparison of Sample Preparation Methods for Phosphorus in Grains and Stock Feeds

1968 ◽  
Vol 51 (4) ◽  
pp. 771-773
Author(s):  
Aaron E Rash
Keyword(s):  
Sample Preparation ◽  
Perchloric Acid ◽  
Sodium Molybdate ◽  
The Other ◽  
Acid Digestion ◽  
Preparation Methods ◽  
Commercial Feeds ◽  
Sample Preparation Methods ◽  
Good Agreement

Abstract The nitric-perchloric acid digestion, 22.070(b) and 22.073, for the determination of phosphorus in grains and stock feeds was compared with three other methods of sample preparation (destruction of organic material) : quinoline molybdate precipitation, perchloric-sulfuric-sodium molybdate digestion, and the plant method. The values obtained by the nitric-perchloric acid method were not in good agreement with those obtained by the other methods studied. Six samples of commercial feeds and one barley sample were analyzed. The barley sample gave very poor recoveries by method 22.073.

Determination of Glimepiride in Human Plasma by LC-MS-MS and Comparison of Sample Preparation Methods for Glimepiride

2004 ◽  
Vol 60 (1-2) ◽  
Author(s):  
Hohyun Kim ◽  
Kyu Young Chang ◽  
Chang Hun Park ◽  
Moon Sun Jang ◽  
Jung-Ae Lee ◽  
...  
Keyword(s):  
Sample Preparation ◽  
Human Plasma ◽  
Preparation Methods ◽  
Sample Preparation Methods

Development of Two Sample Preparation Methods for Determination of Lead in Composite Dust Wipe Samples

2011 ◽  
pp. 85-85-16
Author(s):  
Kenneth T. White ◽  
F. G. Dewalt ◽  
David C. Cox ◽  
Richard Schmehl ◽  
Warren Friedman ◽  
...  
Keyword(s):  
Sample Preparation ◽  
Preparation Methods ◽  
Sample Preparation Methods

Evaluation of sample preparation methods for the determination of As, Cd, Pb, and Se in rice samples by GF AAS

2016 ◽  
Vol 124 ◽  
pp. 402-409 ◽  
Author(s):  
Richard Macedo de Oliveira ◽  
Ana Clara Nascimento Antunes ◽  
Mariana Antunes Vieira ◽  
Aline Lisbôa Medina ◽  
Anderson Schwingel Ribeiro
Keyword(s):  
Sample Preparation ◽  
Preparation Methods ◽  
Rice Samples ◽  
Gf Aas ◽  
Sample Preparation Methods
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