Determination of Calcium-48 in Natural Calcium by Neutron Activation Analysis.

Corless, James T.

doi:10.1021/ac60239a002

Cited by 13 publications

(3 citation statements)

References 17 publications

(14 reference statements)

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“…The total Ca concentration is precisely determined for instance by acid EDTA titration (ethylenediaminetetraacetic) in wet chemistry. The results obtained by neutron activation analysis showed large variations of up to 10 ‰ (Corless 1966(Corless , 1968, which were, however, not reproduced by subsequent studies.…”

Section: Neutron Activation Analysismentioning

confidence: 61%

“…INAA Mass dependent Ca isotope fractionation effects were also approached by methods other than mass spectrometry. One of the applied analytical methods was neutron activation analysis (INAA) (Corless 1966(Corless , 1968. The basic concept of neutron activation is that certain nuclides are selectively activated by neutron-radiation.…”

Section: Neutron Activation Analysismentioning

confidence: 99%

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Analytical Methods

1989

Lead Finishing in Semiconductor Devices: Soldering

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Despite the large relative mass difference between different Ca isotopes, the isotopic variability of Ca in natural materials is relatively small. Consequently, high-precision Ca isotope analyses are required to accurately resolve Ca isotope fractionation prior to data interpretation. This chapter summarises techniques which are successfully used to digest samples and to purify different types of sample material. The basic principles of different mass spectrometric methods for the accurate and precise determination of Ca isotope compositions are presented with a focus on thermal ionisation mass spectrometry (TIMS) and multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). We also present an overview about other, less frequently applied techniques used so far. Additionally, we provide useful information on how to report Ca isotope data (e.g. different notations and reference materials) and explain how to convert literature data based on different reference materials and/or given in different notations.

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Section: Neutron Activation Analysismentioning

confidence: 61%

Section: Neutron Activation Analysismentioning

confidence: 99%

Analytical Methods

1989

Lead Finishing in Semiconductor Devices: Soldering

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“…Trace elements thus determined include chromium (62), copper, gallium and zinc (63), rhenium (159), antimony and tin (174) and mercury (116,174). Activation can be used to measure isotopic abundances; thus calcium-48 on activation yields 49Ca which decays to 49Sc and 49Ti, which in turn mav be separated bv ion exchange (89).…”

Section: Table I Inorganic Applicationsmentioning

confidence: 99%