Search Results
Abstract
The distribution of Mo(VI) and the interfering radiocontaminants U(VI), Zr(IV) and Nb(V) have been investigated between chromatographic alumina and aqueous hydrochloric acid solutions of concentrations ranging from 0.5M to 11M. At low acidities (less than 1M HCl) the distribution coefficients increase with the decrease of acid concentration, while in the region of 2–4M they increase with the increase of the acid concentration. Above 4M HCl, the increase inK D continues with the acid concentration for both Zr(IV) and Nb(V), but constant values are reached for U(VI) and Mo(VI).
Abstract
We introduce a new class of sequences called NBVS to generalize GBVS, essentially extending monotonicity from “one sided” to “two sided”, while some important classical results keep true.
Abstract
Adsorption behaviour of the individual tracer ions:134Cs(I),85,89Sr(II),131,133Ba (II),90Y(III),141Ce(III),152,154Eu(III),95Zr(IV),175,181Hf(IV),95Nb(V),60Co(II),115Cd(II),99mTc(VII), and131I(-I) on charcoal impregnated with stannic chloride from Hcl solutions, was investigated. Batch equilibrium distribution coefficients of the respective ions indicated strong anion exchange properties towards impregnated charcoal. The column breakthrough sorption capacity was of the order of 0.62–0.66 meq·g–1 of dry adsorbent. Small chromatographic columns of impregnated charcoal could achieve rapid and quantitative separation procedures in HCl medium. Strongly adsorbed anions such as TcO 4 – and I– ions could be eluted with NH4SCN and NH4NO2 eluents, respectively.
Trennung von Spaltprodukten durch extraktionschromatographie
I. Bestimmung der verteilungskoeffizienten
Abstract
The possibilities for the separation of a complex fission product mixture by extraction chromatography have been investigated. Here the partition coefficients between three solvents and hydrochloric acid are reported for the following elements: Zn(II), Ge(IV), As(III), As(V), Se(IV), Zr(IV), Nb(V), Mo(VI), Tc(IV) Ru(III), Ru(IV), Rh(III), Ag(I), Cd(II), In(III), Sn(IV), Sb(III), Sb(V), Te(IV), I(oxidized), Cs(I), Ce(III), Tb(III), Tm(III), Ac(III), Th(IV), Pa(V), U(VI), Np(IV), Np(VI). As solvents tri-n-butylphosphate (TBP), tri-n-octylamine (TOA) and di-(2-ethylhexyl)-orthophosphoric acid (HDEHP) have been used. The partition coefficients have been measured by batch-experiments in which the solvents were adsorbed on polytrifluoromonochloroethylene powder.
: Infektiøs endocarditis. NBV 2014 May 2; available from: URL: http://nbv.cardio.dk/endocarditis 10. Statens Seruminstitut: Streptococcus pneumoniae antistof (IgG) (antistof 23-valent) (R-nr. 695). Diagnostisk Håndbog 2014
Pajzsmirigyhormon-kezelési szokások Magyarországon.
A THESIS kérdőíves felmérés eredményei
Use of thyroid hormones in hypothyroid and euthyroid patients.
A THESIS questionnaire survey of Hungarian physicians
– Danish Endocrine Societies. October 2020. Available from: https://endocrinology.dk/nbv/thyroideasygdomme/hypothyroidisme/ [accessed: Nov 10, 2021]. 17
