Extraction-photometric determination of bismuth in the ointment «Liniment balsamic» in the quaternary water – dithiopyrylmethane – trichloroacetic acid – orthophosphoric acid system

2018 ◽  
Vol 91 (3) ◽  
pp. 58-63
Author(s):  
Yegorova ◽  
◽  
Shcherbakova ◽  
Leites
Keyword(s):  
Trichloroacetic Acid ◽  
Orthophosphoric Acid ◽  
Photometric Determination ◽  
Acid System

scholarly journals Extraction-photometric determination of osmium using quaternary water-thiopyrine-trichloroacetic and orthophosphoric acid system

2020 ◽  
Vol 99 (3) ◽  
pp. 61-65
Author(s):  
L.S. Egorova ◽  
◽  
E.A. Leites ◽  
Keyword(s):  
Ascorbic Acid ◽  
Organic Solvent ◽  
Orthophosphoric Acid ◽  
Photometric Determination ◽  
Model Mixture ◽  
Acid System ◽  
Optimal Conditions ◽  
Liquid Component ◽  
Effect Of Copper

The article is devoted to the extraction-photometric determination of osmium. The aim was to modify the well known extraction-photometric determination of osmium by replacing chloroform, used as an organic solvent in a traditional extraction system, on to water, which is the only liquid component in the layering system. This made it possible to eliminate the toxic organic solvent from the system. The optimal conditions for the osmium extraction were selected, taking with the fact that the consumption of thiopyrine, as an expensive reagent, should be minimal. The results of the developed methodology for determining microgram amounts of osmium with thiopyrine were presented by the example of a model mixture corresponding to the composition of a platinum sponge. The interfering effect of Al (lII), B (lII), Bi (IIl), Fe (llI), Au (lII), lr (II), Cd (ll), Co (II), Ca (II), Si ( IV), Mg (II), Mn (II), Cu (Il), Mo (VI), As (V), Ni (lI), Sn (lV), Pd (Il), Rh (II), Pb (II), Ag (I), Sb (IIl), Te (IV), Cr (IlI), Zn (Il) contained in a platinum sponge was investigated. The interfering effect of copper has been established, which is eliminated by masking with ascorbic acid.

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

scholarly journals PHOTOMETRIC DETERMINATION OF ARGININE

1942 ◽  
Vol 145 (2) ◽  
pp. 359-364 ◽  
Author(s):  
Erwin Brand ◽  
Beatrice Kassell
Keyword(s):  
Photometric Determination
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