Development and comparative evaluation of methods for the microdetermination of iodine in drugs of natural origin

1987 ◽  
Vol 23 (2) ◽  
pp. 234-241
Author(s):  
S. A. Listov ◽  
A. P. Arzamastsev
Keyword(s):  
Comparative Evaluation ◽  
Natural Origin ◽  
Evaluation Of Methods

COMPARATIVE EVALUATION OF METHODS FOR DETERMINING THE CONTENT OF HYDROGEN IN METAL MATERIALS

2019 ◽  
pp. 75-84
Author(s):  
D.M. Davydov ◽  
◽  
V.I. Titov ◽  
A.F. Letov ◽  
A.N. Lutsenko ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
Metal Materials ◽  
Evaluation Of Methods

Comparative evaluation of methods for precise determination of oxygen stoichiometry in highT c oxides

Pramana ◽  
1989 ◽  
Vol 32 (2) ◽  
pp. 143-148 ◽  
Author(s):  
T S Krishnamoorthy ◽  
N Mahadevan ◽  
S S Desai ◽  
C C Dias
Keyword(s):  
Comparative Evaluation ◽  
Precise Determination ◽  
Oxygen Stoichiometry ◽  
Evaluation Of Methods

Evaluation of Methods to Establish the Natural Origin of Adrenal Cortex Injections

1970 ◽  
Vol 53 (4) ◽  
pp. 828-830
Author(s):  
C G Cunningham
Keyword(s):  
Adrenal Cortex ◽  
High Ratio ◽  
Animal Origin ◽  
Two Dimensional ◽  
Natural Origin ◽  
One Dimensional ◽  
Chemical Assay ◽  
Evaluation Of Methods

Abstract Usual bioassay methods fail to establish animal origin of the product. Chemical assay and one-dimensional TLC are satisfactory for detecting adulteration when a single steroid (i.e., hydrocortisone) is substituted in an abnormally high ratio to the total steroids. The problem is more difficult when the adulteration is a sophisticated mixture of steroids in their normal ratios. Two-dimensional TLC of the adrenal cortex injection offers the best evidence of adulteration. The presence or absence of nonsteroidic substances naturally present in animal glands is demonstrable in the chromatograms. A standard of identity of adrenal cortex extract is needed to establish the purity and potency of the injection and its natural origin.

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