Determination of cyanogen and cyanogen chloride using gas chromatography with a flame ionisation detector

1986 ◽  
Vol 21 (3) ◽  
pp. 161-164 ◽  
Author(s):  
P. N. Brown ◽  
G. G. Jayson ◽  
M. C. Wilkinson
2014 ◽  
Vol 20 (1) ◽  
pp. 71-86 ◽  
Author(s):  
Vesna Nadjalin ◽  
Zika Lepojevic ◽  
Mihailo Ristic ◽  
Jelena Vladic ◽  
Branislava Nikolovski ◽  
...  

In this study essential oil content was determined in lavender flowers and leaves by hydrodistillation. Physical and chemical characteristics of the isolated oils were determined. By using CO2 in supercritical state the extraction of lavender flowers was performed with a selected solvent flow under isothermal and isobaric conditions. By the usage of gas chromatography in combination with mass spectrometry (GC/MS) and gas chromatography with flame ionisation detector (GC/FID) the qualitative and quantitative analysis of the obtained essential oil and supercritical extracts (SFE) was carried out. Also, the analysis of individual SFE extracts obtained during different extraction times was performed. It turned out that the main components of the analysed samples were linalool, linalool acetate, lavandulol, caryophyllene oxide, lavandulyl acetate, terpinen-4-ol and others. Two proposed models were used for modelling the extraction system lavender flower - supercritical CO2 on the basis of experimental results obtained by examining the extraction kinetics of this system. The applied models fitted well with the experimental results.


1965 ◽  
Vol 14 (3) ◽  
pp. 129-130 ◽  
Author(s):  
Kunio KOGAMI ◽  
Kazuo AOKI ◽  
Teruo AISAKA ◽  
Tokujiro HASEGAWA ◽  
Ju KUMANOTANI

Author(s):  
H.J. Klimisch ◽  
K. Meissner

AbstractA gas chromatographic method is described which is suitable for the quantitative routine determination of CO in tobacco smoke. The CO is separated from other gases on a moderately activated molecular sieve column and is quantitatively determined after hydrogenation on a nickel-contact at 290°C with a flame ionisation detector. The method is characterized by high sensitivity and great stability of the separation column. A comparison of a "constant flow" smoking machine and a smoking machine operated by pistons, in the course of which a container filled with a saturated solution of sodium chloride or a polyvinylchloride bag was employed for gas storing, led to comparable results. The addition of NaNO


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