Trace Analysis by X-Ray Emission Spectrography

Pfeiffer, H. G.; Zemany, P. D.

doi:10.1038/174397a0

Cited by 53 publications

(10 citation statements)

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“…Trace determinations divide themselves logically into those where the traces are major constituents (samples small in mass) and those n here the traces are minor constituents (qaniples possibly large). The first class is governed by the considerations involved in determining film thickness (130) and is exemplified by n-ork nith spots (85,168,219); the second differs from the first in that deviations from proportionality on in6 to absorption and enhancement effects (130) are much more likely.…”

Section: Applications Work On Elementsmentioning

confidence: 99%

“…It is also possible to scan the sample surface with the x-ray beam by deflecting Electron Microprobes (Figure 1). The electron microprobe first described by Castaing (61) has proved increasingly useful and has stimulated the development of similar laboratory (27, 31,43,66,72,84,168,186,215) and commercial instruments ( Table 11). All of the microprobes contain three standard components: an electron-optical system (usually that of an electron microscope) , an optical microscope, and an x-ray spectrometer.…”

Section: Microprobesmentioning

confidence: 99%

“…Felten, Fankuchen, and Steigman (88) have extended the method of Pfeiffer and Zemany (168) to obtain a way of eliminating absorption and enhancement effects. By making identical spots of the sample on a series of Eter papers, and then measuring analytical-line intensities of stacks containing different numbers of spotted papers, data for extrapolation to zero' thickness of spotted paper are obtained-In the extrapolated value, line intensity or ratios of fine intensities are proportional to composition.…”

Section: Absorptiometry With Polychromaticmentioning

confidence: 99%

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X-Ray Absorption and Emission

Liebhafsky¹,

Winslow²,

Pfeiffer³

1960

Anal. Chem.

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1960. One may hope that the appearance of these books wdll help to stabilize, with consideration for the analytical chemist, the confused and proliferating nomenclature in the field under review. SCATTERING While x-ray methods were coming of age in analytical chemistry, it sufficed to know that atoms do scatter x-rays, and that the importance of this scattering increases relative to photoelectric absorption as the atomic number decreases.

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Section: Applications Work On Elementsmentioning

confidence: 99%

Section: Microprobesmentioning

confidence: 99%

Section: Absorptiometry With Polychromaticmentioning

confidence: 99%

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X-Ray Absorption and Emission

Liebhafsky¹,

Winslow²,

Pfeiffer³

1960

Anal. Chem.

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“…A common method for preconcentrating trace elements to improve XRF detection limits is to cast a sample solution in microliter-sized spots that are then dried (Pfeiffer and Zemany, 1954; Murata and Murokado, 1982; Murata et al , 1984; Meltzer and King, 1991; Colletti and Havrilla, 1997; Link et al , 2002). In the current work, a dried residue casting process was used to prepare dry specimens from liquid samples.…”

Section: Introductionmentioning

confidence: 99%

Improvements in XRF specimen preparation using the dried residue method: Gallium in plutonium metal

Worley

Colletti

2004

Powder Diffr.

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Preparing dry specimens from liquid samples for XRF analysis avoids introducing caustic or hazardous liquids into the instrument. Several modifications were made to a dried residue specimen preparation method for quantifying gallium in plutonium metal in order to improve the method accuracy and precision. Ion exchange chromatography was utilized to remove the plutonium prior to casting the dried residue specimens. This, coupled with several other changes, improved the method relative error from ∼5% to less than 1%. These results are sufficient for routine sample analysis and are almost comparable to results from the established process using liquid specimens. However, the analysis of radioactive liquid specimens is unnecessary for quantifying the plutonium gallium content using this dried residue approach

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“…A common method for preconcentrating trace elements to improve XRF detection limits is to cast a sample solution in microliter sized spots that are then dried [5][6][7][8][9][10]. In the current work, a dried residue casting process was used to prepare dry specimens from liquid samples.…”

Section: Introductionmentioning

confidence: 99%

F25 Improvements in XRF Specimen Preparation Using the Dried Residue Method: Gallium in Plutonium

Worley

2003

Powder Diffr.

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Preparing dry specimens from liquid samples for XRF analysis avoids introducing caustic or hazardous liquids into the instrument. Several modifications were made to a dried residue specimen preparation method for quantifying gallium in plutonium metal in order to improve the method accuracy and precision. Ion exchange chromatography was utilized to remove the plutonium prior to casting the dried residue specimens. This coupled with several other changes improved the method relative error from ~5% to less than 1%. These results are sufficient for routine sample analysis and are almost comparable to results from the established process using liquid specimens. However, the analysis of radioactive liquid specimens is unnecessary for quantifying the plutonium gallium content using this dried residue approach.

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Trace Analysis by X-Ray Emission Spectrography

Cited by 53 publications

References 1 publication

X-Ray Absorption and Emission

X-Ray Absorption and Emission

Improvements in XRF specimen preparation using the dried residue method: Gallium in plutonium metal

F25 Improvements in XRF Specimen Preparation Using the Dried Residue Method: Gallium in Plutonium

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