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- W260543480 abstract "The solution under study (25 to 50 ml)s containing 5 to 20 mg of cation, is filtered 5 to 6 times through a layer of NSK cathionite, in the H-form, at a rate of 2 to 5 drops per second (it is possible to filter only once at a rate not exceeding 10 mi/minute). The cathionite is washed with water until neutral to methyl orange; filtrate (+ washings) is titrated with 0.01 N solution of alkalis to methyl orange. Concentration of the salt in the solution is calculated in accordance with the formula x = E x Na/1000, where E = equivalent of rare earth elements N = normality of alkali solutions a = amount of alkali (in ml) used up in the titration. Deviation from results of gravimetric method is not above 2% for Ce(NO/sub 3/)/sub 3/, Pr(NO/sub 3/)/sub 3/, Nd/sub 3/(NO/sub 3/)/su b 3/, and up to 5% for La(NO/sub 3/)/sub 3/." @default.
- W260543480 created "2016-06-24" @default.
- W260543480 creator A5007647510 @default.
- W260543480 date "1956-01-01" @default.
- W260543480 modified "2023-09-27" @default.
- W260543480 title "DETERMINATION OF CONCENTRATION OF SOLUTIONS OF RARE EARTH ELEMENTS BY THE METHOD OF TREATMENT WITH CATHIONITE" @default.
- W260543480 hasPublicationYear "1956" @default.
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