Zobrazeno 1 - 10
of 44
pro vyhledávání: '"D. R. Wiles"'
Autor:
I. G. De Jong, D. R. Wiles
Publikováno v:
Water, Air, and Soil Pollution. 23:197-208
The effect of contaminants, both known and unidentified, in interfering with the coprecipitation of 234Th tracer with BaSO4 is described. The effect is illustrated by results obtained on water from Nero Lake, a uranium mine tailings dumping area. Whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5beb91616851b5e35afbca712ac6d9f2
https://doi.org/10.1007/bf00206976
https://doi.org/10.1007/bf00206976
Autor:
D. R. Wiles, I.G. de Jong
Publikováno v:
Inorganic Chemistry. 15:2588-2591
Beta decay of 99Mo in (C/sub 5/H/sub 5/Mo(CO)/sub 3/)/sub 2/ is found to produce C/sub 5/H/sub 5//sup 99m/Tc(CO)/sub 3/ in 74.4 percent of the decays. Comparison with the nuclear recoil energy spectrum and other information leads to the conclusion th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbe6273b1509362b83fa81cf886ce06a
https://doi.org/10.1021/ic50165a003
https://doi.org/10.1021/ic50165a003
Autor:
R. C. Burk, D. R. Wiles
Publikováno v:
Journal of Radioanalytical Chemistry. 79:185-196
The effect of K+ on freshly precipitated BaSO4 is seen to increase the area of the crystals. The exchange rate of Ba2+ with these crystals is found to be proportional to this increased area. The extent of234Th precipitation is found to be, increased
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64c766ae820422ec9b817916fa842ba7
https://doi.org/10.1007/bf02518931
https://doi.org/10.1007/bf02518931
Autor:
D. R. Wiles, J.-P. Schmit
Publikováno v:
Canadian Journal of Chemistry. 56:1956-1960
The principle of molecular activation analysis is described, as well as its unsuccessful application to the species specific determination of methylmercury in fish. The reasons for the failure of the method were determined and are found to be of sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0da22b009ddcd25efcf1f54544fa98f
https://doi.org/10.1139/v78-318
https://doi.org/10.1139/v78-318
Autor:
D. R. Wiles
Publikováno v:
Water, Air, and Soil Pollution. 20:99-108
The chemical leaching of Ra and Th from U mine tailings (Beaverlodge, Canada) has been studied as part of an investigation into the chemical and mineralogical location of these radionuclides in the tailings particles. The leaching reaction is found t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96d56e835c168104d58ad04be2426d5a
https://doi.org/10.1007/bf00279501
https://doi.org/10.1007/bf00279501
Publikováno v:
Canadian Journal of Chemistry. 63:2290-2293
The effects of coprecipitated K+ and Fe3+ ions on the nature of freshly precipitated BaSO4 were studied. The presence of K+ in the precipitate is seen to have a pronounced effect on crystal habit and increases the specific surface area of the crystal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3a5e21050185927fae894a99e178064
https://doi.org/10.1139/v85-377
https://doi.org/10.1139/v85-377
Autor:
D. R. Wiles, I. G. de Jong
Publikováno v:
Journal of the Fisheries Research Board of Canada. 33:1324-1330
A novel method is described by which nuclear activation analysis can be used to determine the chemical form in which certain elements occur. The radiochemical retention of molecular identity is constant for a given type of sample and can be easily de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47cd83aa5856b5405449bcdf762ae8db
https://doi.org/10.1139/f76-170
https://doi.org/10.1139/f76-170
Publikováno v:
Journal of Raman Spectroscopy. 18:101-104
Results of a micro-Raman spectral investigation of K+-doped BaSO4 crystals prepared by a previously described radiochemical coprecipitation procedure are reported. Changes in the spectral bands of the ν1, ν2, ν3 and ν4 modes of the sulphate ion a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b18e275d6d413eaf883c1354e2d08a62
https://doi.org/10.1002/jrs.1250180206
https://doi.org/10.1002/jrs.1250180206
Autor:
I. G. de Jong, D. R. Wiles
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 82:309-318
Separation and isolation of radium and thorium by successive coprecipitation on BaSO4 is usually both fast and reliable, but suffer from both cross contamination (of Ra by Th) and low recovery (of Th) in the presence of some common components of envi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5f6f4f1f144f77b012b508f59d61410
https://doi.org/10.1007/bf02037053
https://doi.org/10.1007/bf02037053
Publikováno v:
Journal of Radioanalytical Chemistry. 78:81-85
Earlier work on the coprecipitation of230Th and234Th with BaSO4 has been confirmed and in particular the influence of other ions was investigated. Potassium ions, both in the solution and in the crystals, promote the coprecipitation, while polyvalent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66a67f1b0a07aae3850739014ce39287
https://doi.org/10.1007/bf02519752
https://doi.org/10.1007/bf02519752