WITHDRAWN: A new method for quantitative analysis of heavy metals in automotive brake linings: A comparison between wet-chemistry based analysis and measurements with a handheld X-ray fluorescence spectrometer

2010 ◽  
Author(s):  
Figi
Keyword(s):  
Heavy Metals ◽  
Quantitative Analysis ◽  
New Method ◽  
Wet Chemistry ◽  
X Ray ◽  
Fluorescence Spectrometer ◽  
Automotive Brake

A method for determining the CEC and chemical composition of clays via XRF

Clay Minerals ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 717-725 ◽  
Author(s):  
S. Battaglia ◽  
L. Leoni ◽  
F. Sartori
Keyword(s):  
Matrix Effects ◽  
Fluorescence Analysis ◽  
Correction Method ◽  
Exchange Capacity ◽  
New Method ◽  
Chemical Compositions ◽  
Wet Chemistry ◽  
X Ray ◽  
Accuracy And Precision ◽  
Source Clays

AbstractA new method for determining the cation exchange capacity (CEC) of clays is proposed. The method is based on X-ray fluorescence analysis of natural and Ba-exchanged clays following the analytical procedure suggested by Franzini et al. (1975). This procedure, which utilizes powder pellets and is based on a full matrix correction method, is frequently applied in Earth Sciences laboratories for the routine analysis of minerals and rocks. For the analysis of Ba-exchanged clays, Franzini's procedure has been modified slightly to account for the contribution of Ba to matrix effects.The new method, which furnishes both the CEC and the chemical compositions of the whole natural clay samples, has been tested on the eight ‘Source Clays’ of The Clay Minerals Society. The results compare well with data reported in the literature and confirm the accuracy and precision of the method and make it a valid alternative to techniques based on wet chemistry, execution of which is usually more time-consuming and which often requires greater analytical skill.

Particle Size Effects in Geological Analyses by X-Ray Fluorescence

1985 ◽  
Vol 29 ◽  
pp. 587-592
Author(s):  
K.K. Nielson ◽  
V.C. Rogers
Keyword(s):  
Particle Size ◽  
Quantitative Analysis ◽  
Size Effects ◽  
Light Element ◽  
New Method ◽  
X Ray ◽  
Particle Size Effects ◽  
Sample Matrix ◽  
Xrf Analysis ◽  
The Matrix

Particle-size effects can cause significant errors in x-ray fluorescence (XRF) analysis of particulate materials. The effects are usually removed when samples are fused or dissolved to standardize the matrix for quantitative analysis. Recent improvements in numerical matrix corrections reduce the need to standardize the sample matrix via fusion or dissolution, particularly when the CEMAS method is used to estimate unmeasured light-element components of undefined materials for matrix calculations. A new method to correct for particle-size effects has therefore been examined to potentially avoid the need for destructive preparation of homogeneous samples.

Quantitative analysis results of CE-1 X-ray fluorescence spectrometer ground base experiment

2008 ◽  
Vol 32 (1) ◽  
pp. 24-27 ◽  
Author(s):  
Cui Xing-Zhu ◽  
Wang Huan-Yu ◽  
Zhang Cheng-Mo ◽  
Chen Yong ◽  
Zhang Jia-Yu ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
X Ray ◽  
Base Experiment ◽  
Fluorescence Spectrometer
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