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- W133068851 abstract "The homogeneous distribution of a micro component between a crystalline precipitate and a solution can be represented by the relation: x/y = D/sub 0/(1 - x)/(l - y), where x and y are the concentrations of the micro and macro components in the precipitate, (l - x) and (l - y) are the concentrations in solution, and D/sub 0/ is the distribution eoefficient. D/sub 0/ is > 0, but < infinity. The further D/sub 0/ is from l, the greater is the degree of separation between the two elements. It is not difficult to show that on introducing a complexing agent, a new homogeneous distribution coefficient is obtained such that in the limiting case D = D/sub 0/ ( beta '/ beta ), where beta is the stability constant for the microelement complex and beta is the stability constant for the macroelement complex. Thus, D/sub 0/= 0.13 plus or minus 0.01 for the carrying of Sr on barium nitrate in the absence of a complexing agent. Since Sr forms a stronger complex with complexone III than does Ba, the distribution coefficient for Sr was observed to decrease from 0.l3 to 0.007 with increasing concentration of complexing agent. A logarithmic, DoernerHoskinsmore » type of distribution was also considered. Ba(NO/sub 3/)/sub 2/ was precipitated by adding Cu(NO/sub 3/)/sub 2/ to a solution containing Na/sub 2STABa(EDTA)! and Sr/sub 90/ tracer. The value of lambda does not depend on the percentage of barium precipitated, and was found to be 0.0032 which is close to a calculated value of 0.0043. (TTT)« less" @default.
- W133068851 created "2016-06-24" @default.
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- W133068851 date "1961-12-11" @default.
- W133068851 modified "2023-09-23" @default.
- W133068851 title "THE EFFECT OF COMPLEXING ON THE SEPARATION OF ELEMENTS BY COCRYSTALLIZATION" @default.
- W133068851 hasPublicationYear "1961" @default.
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