scholarly journals Extraction of cobalt with ethyl acetate and simultaneous photometric determination of cobalt and nickel

1947 ◽  
Vol 265 (5) ◽  
pp. 351-351 ◽  
Author(s):  
A. L. J. Rao ◽  
Surinder Singh
Keyword(s):  
Ethyl Acetate ◽  
Photometric Determination ◽  
Cobalt And Nickel

Photometric determination of aluminium and zinc with salicylaldehyde semicarbazone

1984 ◽  
Vol 49 (6) ◽  
pp. 1468-1473 ◽  
Author(s):  
Záviš Holzbecher ◽  
Dagmar Lipská
Keyword(s):  
Ethyl Acetate ◽  
Fluorescence Spectra ◽  
Photometric Determination ◽  
Optimum Conditions ◽  
Fluorometric Determination ◽  
Limit Of Determination ◽  
Relative Standard ◽  
Tenfold Excess ◽  
Masking Agents

The effect of some tensides on the absorption, excitation, and fluorescence spectra of Al and Zn complexes of salicylaldehyde semicarbazone in aqueous-alcoholic solutions and on their extractability into ethyl acetate has been studied. The shape of the absorption spectra is unaffected by the presence of the tensides while the time of the complex formation is shorter. The complexes are extractable into ethyl acetate in the presence of the anionactive tenside tested, sodium lauryl sulphate. The optimum conditions for the spectrophotometric and fluorometric determination of Al and Zn have been established. The limit of determination is 2 ng ml-1 (pH 3.8-4.8) for Al and 50 ng ml-1 (pH 8.4-8.6) for Zn. Using thiosulphate or fluoride as masking agents, Zn can be determined in a concentration of 2 μg ml-1 in the presence of the same quantity of Al or Cu, or in the presence of a tenfold excess of Fe, with a relative standard deviation of 1.5%.

Photometric determination of copper (II) microquantities in pyrite

2019 ◽  
Vol 85 (10) ◽  
pp. 23-28
Author(s):  
F. S. Aliyeva ◽  
F. O. Mamedova ◽  
F. N. Bahmanova ◽  
Yu. A. Yusibov ◽  
F. M. Chyragov
Keyword(s):  
Photometric Determination ◽  
Determination Of Copper

Spectrophotometric study of the reactions of lanthanoids with bromopyrogallol red in the presence of cation active tensides

1982 ◽  
Vol 47 (2) ◽  
pp. 503-508 ◽  
Author(s):  
Irena Němcová ◽  
Pavla Plocková ◽  
Tran Hong Con
Keyword(s):  
Absorption Spectra ◽  
Photometric Determination ◽  
Spectrophotometric Study ◽  
Ternary Complexes ◽  
Optimal Conditions ◽  
Bromopyrogallol Red ◽  
Binary Complexes

The absorption spectra of the binary complexes of lanthanoids with bromopyrogallol red were measured and the formation of ternary complexes with cation active tenside, Septonex, was studied. Optimal conditions were found for the formation of these complexes and the possibility of their use in the photometric determination of lanthanoids was demonstrated on several examples.

ChemInform Abstract: FLAME PHOTOMETRIC DETERMINATION OF POTASSIUM IN TUNGSTEN

1978 ◽  
Vol 9 (38) ◽  
Author(s):  
H.-J. LUNK ◽  
G. HENRION ◽  
D. MARQUARDT ◽  
TR. JENTZSCH
Keyword(s):  
Photometric Determination
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