Quality Assurance of Energy Dispersive Spectrometry Systems

1997 ◽  
Vol 3 (S2) ◽  
pp. 903-904
Author(s):  
E. B. Steel ◽  
R. B. Marinenko ◽  
R. L. Myklebust
Keyword(s):  
Quality Control ◽  
Standard Operating Procedure ◽  
Energy Dispersive ◽  
X Ray ◽  
Standard Procedures ◽  
Reliability Sensitivity ◽  
Control Procedures ◽  
Analysis System ◽  
Quality Instruments

Monitoring the performance capabilities of energy dispersive X-ray spectrometers (EDS) and related x-ray analysis electronics and software is important for determining and improving the reliability, sensitivity, and accuracy of the x-ray analysis system. In addition, there is a growing popularity of quality systems through laboratory accreditation and ISO 9000 related programs that require set quality control procedures for analytical instrumentation. Having similar standard procedures amongst labs would allow direct intercomparison of results. This intercomparison would help labs and manufacturers determine what are normal versus abnormal results and lead to higher quality instruments and analyses. We have been developing a standard operating procedure for the characterization of EDS x-ray analysis systems on electron beam instruments.We are designing the procedure to maximize the efficiency of each quality control (QC) measurement so that we spend as little time monitoring the analysis system as is possible. We first chose useful QC specimens and then designed data collection methods.

Quality Assurance of Energy Dispersive Spectrometry Systems

1998 ◽  
Vol 4 (S2) ◽  
pp. 214-215
Author(s):  
E. B. Steel ◽  
R. B. Marinenko
Keyword(s):  
Quality Control ◽  
Energy Dispersive Spectrometry ◽  
Standard Procedure ◽  
Energy Dispersive ◽  
X Ray ◽  
Standard Procedures ◽  
Reliability Sensitivity ◽  
Control Procedures ◽  
Analysis System ◽  
Quality Instruments

Monitoring the performance and capabilities of energy dispersive X-ray spectrometers (EDS) and related x-ray analysis electronics and software is important for maintaining and improving the reliability, sensitivity, and accuracy of the x-ray analysis system. There is growing demand for quality systems through laboratory accreditation, ISO 9000, ISO Guide 25 and related programs that require set quality control procedures for analytical instrumentation. In such cases it is frequently more useful to have one national/international standard. This approach is not only more efficient than having each analyst devise their own system, but the use of the same standard procedures among labs would allow direct intercomparison of results. This intercomparison can help labs and manufacturers determine what are normal versus abnormal results and lead to higher quality instruments and analyses.We are designing a standard procedure to maximize the efficiency of each quality control (QC) measurement so that we spend as little time monitoring the analysis system as is possible.

First characterization of chemical environments using energy dispersive inelastic x-ray scattering induced by an x-ray tube

2021 ◽  
Vol 92 (1) ◽  
pp. 013102
Author(s):  
Roberto Daniel Pérez ◽  
Juan José Leani ◽  
José Ignacio Robledo ◽  
Héctor Jorge Sánchez
Keyword(s):  
Energy Dispersive ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Development of a microanalytical energy dispersive X-ray fluorescence method for compositional characterization of (U, Pu)O 2 samples

2017 ◽  
Vol 131 ◽  
pp. 124-129 ◽  
Author(s):  
Sangita Dhara ◽  
S. Sanjay Kumar ◽  
Kavitha Jayachandran ◽  
J.V. Kamat ◽  
Ashok Kumar ◽  
...  
Keyword(s):  
Fluorescence Method ◽  
Energy Dispersive ◽  
X Ray ◽  
Compositional Characterization

Handheld Portable Energy-Dispersive X-Ray Fluorescence Spectrometry (pXRF)

2016 ◽  
pp. 362-381 ◽  
Author(s):  
Elisabeth Holmqvist
Keyword(s):  
Production Systems ◽  
Matrix Effects ◽  
Chemical Characterization ◽  
High Sensitivity ◽  
Limited Range ◽  
Energy Dispersive ◽  
Analytical Sensitivity ◽  
X Ray ◽  
Non Destructive

Handheld portable energy-dispersive X-ray fluorescence (pXRF) spectrometry is used for non-destructive chemical characterization of archaeological ceramics. Portable XRF can provide adequate analytical sensitivity to discriminate geochemically distinct ceramic pastes, and to identify compositional clusters that correlate with data patterns acquired by NAA or other high sensitivity techniques. However, successful non-destructive analysis of unprepared inhomogeneous ceramic samples requires matrix-defined scientific protocols to control matrix effects which reduce the sensitivity and precision of the instrumentation. Quantification of the measured fluorescence intensities into absolute concentration values and detection of light elements is encumbered by the lack of matrix matched calibration and proper vacuum facilities. Nevertheless, semi-quantitative values for a limited range of high Z elements can be generated. Unstandardized results are difficult to validate by others, and decreased analytical resolution of non-destructive surface analysis may disadvantage site-specific sourcing, jeopardize correct group assignments, and lead to under-interpretation of ceramic craft and production systems.

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