Determination of hafnium in zirconium and Zircaloy by neutron activation and extraction chromatography

Yonezawa, Chushiro; Tamura, Nori; Ōnishi, Hiroshi

doi:10.2116/bunsekikagaku.23.764

Cited by 5 publications

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“…In the present extraction chromatography (5), recovery of hafnium from zirconium and Zircaloy was 95 ± 4% ( = 10) and 97 ± 2% ( = 9), respectively.…”

Section: Resultsmentioning

confidence: 49%

“…Although there are many methods for dotermining traces of hafnium in zirconium and Zircaloy, neutron activation analysis (1)(2)(3)(4)(5) and isotope dilution mass spectrometry (6)(7)(8) are most often used. The former has high sensitivity, and the latter has high precision and accuracy.…”

mentioning

confidence: 99%

“…In neutron activation analysis, both 178Hf(n,y) and Is0Hf(n,y) reactions provide appropriate nuclides. However 179mHf, being a short half-life nuclide, is only applicable for a nondestructive method (1-3) while ls1Hf of a long half-life is useful for both nondestructive (4) and destructive methods (3,5). One of the disadvantages in neutron activation analysis is less accuracy and precision, compared with isotope dilution mass spectrometry.…”

mentioning

confidence: 99%

“…Accurate determination of traces of hafnium in zirconium and Zircaloy, which are used as cladding material in nuclear reactors, is very important because of its large thermal neutron cross section. Although there are many methods for determining traces of hafnium in zirconium and Zircaloy, neutron activation analysis (1)(2)(3)(4)(5) and isotope dilution mass spectrometry (6)(7)(8) are most often used. The former has high sensitivity, and the latter has high precision and accuracy.…”

mentioning

confidence: 99%

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Determination of hafnium in zirconium and its alloys by stable isotope dilution-neutron activation analysis

Yonezawa¹,

Komori²

1983

Anal. Chem.

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2059that generation of 2p core holes occws by processes other than emission of the ESCA '2p electrons. This could depend on other fadors not related to the chemical state of the compound like the state of subdivision of the sample. Thus, the CU 2pfAuger ratio would be of dubious value though the LMVfLVV ratio should be unaffected. Finally, no complications arise in the Auger spectra because of the use of nonmonochromatic X radiation. Registry No.

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“…In the present extraction chromatography (5), recovery of hafnium from zirconium and Zircaloy was 95 ± 4% ( = 10) and 97 ± 2% ( = 9), respectively.…”

Section: Resultsmentioning

confidence: 49%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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