Results 141 to 150 of about 208,364 (208)

Capillary gas adsorption chromatography

Chemical Reviews, 1989
V. G. Berezkin, S. M. Volkov
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Two-stage capillary gas chromatography

Analytica Chimica Acta, 1967
Abstract A two-stage capillary gas-chromatographic method has been developed with the aim of obtaining a better separation of the saturated hydrocarbons from petroleum in the C10–C18 molecular weight range. The method should also be applicable to other hydrocarbon fractions and to compounds other than hydrocarbons.
P A, Schenck, C H, Hall
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Capillary gas chromatography of s-triazines

Journal of Chromatography A, 1977
In order to achieve better resolution and lower detection limits for s-triazines, glass capillary columns made of soft soda-lime glass and etched with gaseous hydrogen chloride have been introduced. Columns with non-polar (OV-101, SE-30) mixed (Carbowax 20M + SE-30) and polar stationary liquids (Carbowax 20M) were used.
E, Matisová, J, Krupcik
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Nitrate analysis by capillary gas chromatography

Analytical Biochemistry, 1990
A microanalytical gas chromatographic (GC) method for the analysis of nitrate in rat urine is described. The method involves the conversion of nitrate to nitromesitylene and quantitation using 3,4-dimethylnitrobenzene as an internal standard. The nitroaromatics were separated on a wide-bore capillary column and detected with a nitrogen-phosphorus ...
M J, Dunphy, D D, Goble, D J, Smith
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Capillary gas chromatography of n-alkyness

Journal of Chromatography A, 1976
Abstract The Kovats retention indices ( I of C 6 C 14 n -alkynes on squalane (SQ), Apiezon L (ApL), polyphenyl ether (PFE) and polyethylene glycol 4000 (PEG) vary relatively slightly with temperature ( T ) in the range 60–190°C. On SQ the I values of internal n -alkynes decrease and on PEG and PFE they increase with increase in T , while 1 ...
S. Rang, K. Kuningas, A. Orav, O. Eisen
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