Zobrazeno 1 - 10
of 132
pro vyhledávání: '"M. Kyrš"'
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 258:497-509
Solvent extraction of several long-lived fission products from diluted nitric acid in pronounced synergistic systems involving dicarbollide and conformers of a specific thiacalix[n]arene were investigated using mainly chlorobenzene as the diluent. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db665032a1180e0b386917e6dd0bd8d7
https://doi.org/10.1023/b:jrnc.0000011743.63807.9e
https://doi.org/10.1023/b:jrnc.0000011743.63807.9e
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 254:455-464
Several calixarenes were tested with the aim to find a synergic solvent extraction system with dicarbollide suitable for the extraction of europium from nitric acidic solutions. The best results were obtained with C56H72O12S4 and chlorobenzene. Data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1799f7c874907bc0ca7787a9134d8404
https://doi.org/10.1023/a:1021677702502
https://doi.org/10.1023/a:1021677702502
Autor:
M. Kyrš
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Letters. 187:185-195
The history of the development of solvent extraction investigations with dicarbollides for the separation of metals is briefly treated and some inaccuracies in previous reviews are commented on.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::556fcccd79f0bf92709a7f60e6c2c1b3
https://doi.org/10.1007/bf02166505
https://doi.org/10.1007/bf02166505
Autor:
M. Kyrš, J. Alexová
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Letters. 187:285-297
The kinetics of Sr and Ba distribution both for extraction and back-extraction processes has been investigated. The influence of the equilibrium pH, the CDTA concentration and the Na/Li ratio on the distribution of the metals to be separated was esta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5ab802e334a4f3d9af8d6dbe3c13afb
https://doi.org/10.1007/bf02166556
https://doi.org/10.1007/bf02166556
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 178:27-39
The extraction of cesium and barium cations into nitrobenzene and 60% (vol.%) nitrobenzene +40% CCl4 mixture in the presence of dicarbollide (+Slovafol 909), and primary alkylammonium cations has been studied. Extraction constants determined for thre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bedd5b61d7014e2b633bbfc0105ff8d
https://doi.org/10.1007/bf02068654
https://doi.org/10.1007/bf02068654
Autor:
M. Kyrš, P. Selucký
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 174:153-165
A typical composition of the solvent extraction system suitable for a rapid separation (3 min shaking) of Ca and Sr (separation factors β∼5000) in both tracer and macroconcentrations involves: organic phase−0.11M Li-dicarbollide and 1.65% Slovaf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16b3b9d81277118182dff44fc545ce33
https://doi.org/10.1007/bf02040343
https://doi.org/10.1007/bf02040343
Autor:
M. Kyrš, P. Selucký
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 172:213-221
The optimum concentration of the extractants for rapid radiostrontium concentration is 0.1M HB (chlorinated cobalt dicarbollide acid) and 1.5% vol. of Slovafol 909 in a mixture of CCl4(40%) and nitrobenzene. The recommended initial carrier concentrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06ab69c58baa39a17dd601d1fa0cd642
https://doi.org/10.1007/bf02041840
https://doi.org/10.1007/bf02041840
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 149:131-140
The extraction of fission products with Na{[C2B9H10I] [C2B9H10 O(CH2CH2O)2 C5H11]Co} and H2[C2B9H11 CoC2B8H10CoC2B9H11] dicarbollide derivatives into 1,2-dichloroethane and nitrobenzene has been studied. The first derivative shows no signs of synergi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57abdeb147267d372588935283c19ba9
https://doi.org/10.1007/bf02053721
https://doi.org/10.1007/bf02053721
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 148:227-233
The dependence of the distribution of Cs, Sr, Ba, Eu, Ce between nitric acid solutions and 0.06M hexabromo derivative of cobalt dicarbollide (H+BBr 6 − ) in dichloroethane has been investigated upon the concentration of the acid, the extractant and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3801fe36874028d35724ee99a7090225
https://doi.org/10.1007/bf02060356
https://doi.org/10.1007/bf02060356
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 148:349-357
The extraction of cesium and chemical stability of 14 dicarbollide and 5 dicarbaundecaborate extractants were investigated. The hexachlorinated and hexabrominated dicarbollides are chemically the most stable. The extraction of the derivatives into ni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24014c95dd4cc039ee0a743a76aa977f
https://doi.org/10.1007/bf02060367
https://doi.org/10.1007/bf02060367