Determination of the Cholinesterase Activity in Blood and Organs by Automatic Titration. With some Observations on Serious Errors of the Method and Remarks of the Photometric Determination.

2009 ◽  
Vol 15 (4) ◽  
pp. 384-394 ◽  
Author(s):  
J. Jensen-Holm ◽  
H. H. Lausen ◽  
K. Milthers ◽  
Knud O. Møller
Keyword(s):  
Cholinesterase Activity ◽  
Photometric Determination ◽  
Automatic Titration

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.

Titration of sulphates and lead using lead ion selective electrode

1981 ◽  
Vol 46 (2) ◽  
pp. 368-376 ◽  
Author(s):  
Josef Veselý
Keyword(s):  
Ionic Strength ◽  
Electrode Surface ◽  
Salt Content ◽  
Ion Selective Electrode ◽  
Lead Ion ◽  
Selective Electrode ◽  
Limit Of Determination ◽  
Total Salt Content ◽  
Automatic Titration

Titration of sulphates with lead perchlorate employing lead ion selective electrode indication was studied using additions of various organic solvents at different pH' and ionic strength values. As the optimum emerged systems with 60-70% 1,4-dioxane, pH' 5.3-5.6. After dehydration with sodium hydroxide, dioxane must be freed from the electrode surface-oxidizing impurities by their reduction with sodium metal and subsequent distillation. The method was applied to determination of sulphates in mountain spring waters. Units of ppm can be determined; the limit of determination, however, depends considerably on the content of dioxane, total salt content in the sample, and speed of the semi-automatic titration. Lead can be determined with EDTA in concentrations down to c(Pb2+) = 5 . 10-6 mol l-1.

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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