Absorption spectroscopic study of synergistic extraction of praseodymium with benzoyl acetone in presence of crown ether

2005 ◽  
Vol 61 (6) ◽  
pp. 1039-1044 ◽  
Author(s):  
Shrabanti Banerjee ◽  
Sumanta Bhattacharya ◽  
Sukalyan Basu
Keyword(s):  
Crown Ether ◽  
Spectroscopic Study ◽  
Synergistic Extraction

scholarly journals SOLVENT EFFECT ON SYNERGISTIC EXTRACTION OF AMERICIUM (III)/2-TIIENOYLTRIFLUORCACETONE/CROWN ETHER

1991 ◽  
Vol 7 (Supple) ◽  
pp. 51-54 ◽  
Author(s):  
YOSHIHIRO MEGURO ◽  
HIROSHI MUTO ◽  
ZENKO YOSHIDA
Keyword(s):  
Crown Ether ◽  
Solvent Effect ◽  
Synergistic Extraction

scholarly journals SYNERGISTIC EXTRACTION OF COBALT(II) WITH MIXTURE OF ACYL-PYRAZOLON AND CROWN-ETHER IN STRONSIUM(II) ENVIRONMENT

2010 ◽  
Vol 7 (1) ◽  
pp. 43-48
Author(s):  
Bambang Rusdiarso
Keyword(s):  
Crown Ether ◽  
Extraction Constant ◽  
Synergistic Extraction

Synergistic extraction of cobalt(II) with mixture of acyl-pyrazolon (HL) and crown-ether (E) in the Sr(NO3)2 environment has been studied. In this research, HPMBP (phenyl-1-methyl-3-benzoil-4-pyrazolon-5) was used, with three different kinds of  crown-ether, i.e. (benzo-15-crown-5), DB18C6 (dibenzo-18-crown-6) and DB24C8 (dibenzo-24-crown-8), in chloroform. In the bulk environment  of stronsium,  a cobalt coextraction and stronsium occured with species ESrNO3+,Co(PMBP)3-, and E = B15C5,    while Co(PMBP)2E and ESr,Co(PMBP3)2, with E = DB18C6. There was no  coextraction when using crown-ether DB24C8, with the extracted species Co(PMBP)2E. Values of extraction constant presented in log Kex were -6.08 (B15C5), - 4.51,  -12.55 (DB18C6), and - 4.57 (DB24C8), respectively.   Keywords: synergistic, cobalt (II), strontium (II), coextraction.

Photochromic crown ether complexes: A Raman spectroscopic study

1992 ◽  
Vol 48 (6) ◽  
pp. 799-809 ◽  
Author(s):  
I.K. Lednev ◽  
S.P. Gromov ◽  
E.N. Ushakov ◽  
M.V. Alfimov ◽  
J.N. Moore ◽  
...  
Keyword(s):  
Crown Ether ◽  
Spectroscopic Study ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Crown Ether Complexes

Crown ether as size selective synergist in the solvent extraction of thorium(IV) and uranium(VI) with 3-phenyl-4-(4-fluorobenzoyl)-5-isoxazolone

2001 ◽  
Vol 89 (7) ◽  
Author(s):  
M.L.P. Reddy ◽  
R. Meera
Keyword(s):  
Nitric Acid ◽  
Solvent Extraction ◽  
Crown Ether ◽  
Metal Ions ◽  
Synergistic Extraction ◽  
Acid Solutions ◽  
Nitric Acid Solutions

The synergistic extraction of thorium(IV) and uranium(VI) from nitric acid solutions has been investigated using mixtures of 3-phenyl-4-(4-fluorobenzoyl)-5-isoxazolone (HFBPI) and dicyclohexano-18-crown-6 (DC18C6), dibenzo-18-crown-6 (DB18C6) or benzo-15-crown-5 (B15C5). The results demonstrate that these metal ions are extracted into chloroform as Th(FBPI)

scholarly journals Synergistic Extraction of Copper(II) and Zinc(II) with Tributyl Phosphate and Crown Ether

1986 ◽  
Vol 59 (10) ◽  
pp. 3003-3006 ◽  
Author(s):  
Yuko Hasegawa ◽  
Hirofumi Miyata ◽  
Satoshi Yoshida
Keyword(s):  
Crown Ether ◽  
Tributyl Phosphate ◽  
Synergistic Extraction

Some Results of the Spectroscopic Study of Four Close Binary Systems of Early Spectral Types

1965 ◽  
Vol 5 ◽  
pp. 120-130
Author(s):  
T. S. Galkina
Keyword(s):  
Spectroscopic Study ◽  
Spectral Type ◽  
Spectroscopic Investigation ◽  
Binary Systems ◽  
Quantitative Information ◽  
Close Binary ◽  
Physical Parameters ◽  
Absorption And Emission ◽  
Close Binary Systems ◽  
Quantitative Estimates

It is necessary to have quantitative estimates of the intensity of lines (both absorption and emission) to obtain the physical parameters of the atmosphere of components.Some years ago at the Crimean observatory we began the spectroscopic investigation of close binary systems of the early spectral type with components WR, Of, O, B to try and obtain more quantitative information from the study of the spectra of the components.

A spectroscopic study of soil fulvic acid composition after six-year applications of urban waste compost

Agronomie ◽  
2003 ◽  
Vol 23 (8) ◽  
pp. 719-724 ◽  
Author(s):  
Giovanni Gigliotti ◽  
Alceo Macchioni ◽  
Cristiano Zuccaccia ◽  
Pier Lodovico Giusquiani ◽  
Daniela Businelli
Keyword(s):  
Spectroscopic Study ◽  
Fulvic Acid ◽  
Acid Composition ◽  
Urban Waste
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