Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Alpha-spectrometry"”.
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Investigation of ThO2 as a structural analogue for spent nuclear fuel dissolution under repository conditions
… from these experiments were measured with direct alpha spectrometry to estimate the contents and thickness of the 229Th-rich layer formed on the pellet surface. The results of all dissolution studies showed a relatively fast release of thorium during the early stage of the experiment followed by a …
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Alpha-radioactive isotopes in the marine environment.
… Cape Town were analysed by radiochemistry and alpha-spectrometry for Pu-239, 240. Many of these organisms were also analysed for Pu-238, Po-210 and - those isotopes of thorium and uranium that are alpha-emitters. In some samples an estimate of the Ra-226 content was also made. The Pu-239 …
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Der Aktivitätstransport von natürlich bedingtem Thorium in der Inkorporationsüberwachung
… thorium isotopes has been determined by alpha-spectrometry in food, urine, faeces, tap water and air samples from different regions of Germany . The results for the excretion samples were related to the intake data using a newly developed procedure for solving the biokinetic models. An …
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Determination of actinide elements in environmental samples by ICP-MS
… coupled with inductively coupled plasma mass spectrometry (ICP-MS). Initial applications utilised a commercially available resin, namely TRU-Spec resin, for efficient removal of the matrix prior to elution of uranium and thorium analytes. Comparative analyses of reference materials and natural …
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In-situ measurements and calculation of radon gas concentration and exhalation from a tailings mine dump
In Africa as well as in the world, South Africa plays an important role in the mining industry which dates back almost 120 years. Mining activities in South Africa mainly take place in Gauteng Province. Every year millions of tons of rocks are taken from underground, milled and processed to extract …
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In-situ measurements of radon concentrations in soil gas at a site on the Cape Flats
… (Durridge) radon monitor, which makes use of alpha spectrometry. A steel soil probe, which is inserted into the soil, was used to transfer radon from a certain depth in the soil to the RAD7 monitor via a flexible tube. Measurements were made at five sampling areas (three in zone A (A1, A2 and …