Cover Picture: Automated Determination of Oxygen-Dependent Enzyme Kinetics in a Tube-in-Tube Flow Reactor (ChemCatChem 17/2017)

ChemCatChem ◽  
2017 ◽  
Vol 9 (17) ◽  
pp. 3271-3271
Author(s):  
Rolf H. Ringborg ◽  
Asbjørn Toftgaard Pedersen ◽  
John M. Woodley
ChemCatChem ◽  
2017 ◽  
Vol 9 (17) ◽  
pp. 3273-3273 ◽  
Author(s):  
Rolf H. Ringborg ◽  
Asbjørn Toftgaard Pedersen ◽  
John M. Woodley

ChemCatChem ◽  
2017 ◽  
Vol 9 (17) ◽  
pp. 3285-3288 ◽  
Author(s):  
Rolf H. Ringborg ◽  
Asbjørn Toftgaard Pedersen ◽  
John M. Woodley

Author(s):  
P.F. Collins ◽  
W.W. Lawrence ◽  
J.F. Williams

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


2021 ◽  
Vol 164 ◽  
pp. 106823
Author(s):  
Cuong V. Nguyen ◽  
Emma Dinh ◽  
Andrew Doi ◽  
Thuong V. Nguyen ◽  
Anh V. Nguyen

1985 ◽  
Vol 31 (10) ◽  
pp. 1761-1761 ◽  
Author(s):  
D Hendriks ◽  
S Scharpé ◽  
M van Sande ◽  
J P Vingerhoed

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