Separation and purification of 131I from neutron irradiated tellurium dioxide targets by wet-distillation method

2010 ◽  
Vol 71 (1) ◽  
pp. 1-12 ◽  
Author(s):  
M.A. El-Absy ◽  
M.A. El-Garhy ◽  
M.A. El-Amir ◽  
T.W. Fasih ◽  
M.F. El-Shahat
Keyword(s):  
Distillation Method ◽  
Separation And Purification ◽  
Tellurium Dioxide

scholarly journals SEPARATION AND HPLC QUANTITATIVE ANALYSIS OF MURRAYAFOLINE A FROM THE ROOTS OF GLYCOSMIS STENOCARPA

2018 ◽  
Vol 54 (2C) ◽  
pp. 530
Author(s):  
Tran Quoc Toan
Keyword(s):  
Quantitative Analysis ◽  
Column Chromatography ◽  
Steam Distillation ◽  
Hplc Method ◽  
Distillation Method ◽  
Separation And Purification ◽  
Plant Materials

In this study, we investigated two methods for the separation and purification of alkaloidMurrayafoline A from the roots of the Vietnamese plant Glycosmis stenocarpa and developed anHPLC method for the determination of its contents in plant materials and the methanol extract.The yield of Murrayafoline A using steam distillation method was 1.5 times higher than theseparation method using column chromatography. By HPLC method, the content ofMurrayafoline A was determined to be 0.38 % (w/w) in the roots and 16.69 % (w/w) in themethanol extract of G. stenocarpa.

An Automated Procedure for the Determination of Ammonia in Tobacco

1972 ◽  
Vol 6 (4) ◽  
Author(s):  
P.F. Collins ◽  
W.W. Lawrence ◽  
J.F. Williams
Keyword(s):  
Standard Deviation ◽  
Relative Standard Deviation ◽  
Distillation Method ◽  
Relative Standard ◽  
Tobacco Sample ◽  
Automated Determination

AbstractA procedure for the automated determination of ammonia in tobacco has been developed. Ammonia is extracted from the ground tobacco sample with water and is determined with a Technicon Auto Analyser system which employs separation of the ammonia through volatilization followed by colourimetry using the phenate-hypochlorite reaction. The procedure has been applied to a variety of tobaccos containing from 0.02 to 0.5 % ammonia with an overall relative standard deviation of 2 %. The accuracy of the procedure as judged by recovery tests and by comparison to a manual distillation method is considered adequate

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