Development of septum-free injector for gas chromatography and its application to the samples with a high boiling point.
A novel apparatus with a simple structure has been developed for introducing samples into the vaporizing chamber of a gas chromatograph. It requires no septum due to the gas sealing structure over the carrier gas supply line. The septum-free injector made it possible to use injection port temperatures as high as 450 degrees C. Repetitive injection of samples with boiling points below 300 degrees C resulted in peak areas with relative standard deviations between 1.25 and 3.28% (n=5) and good linearity (r(2)>0.9942) for the calibration curve. In the analysis of polycyclic aromatic hydrocarbons and a base oil, the peak areas of components with high boiling points increased as the injection port temperature was increased to 450 degrees C.
Ito
Hiroshi
H
Toyota Central R&D Labs. Inc., 41-1 Nagakute, Nagakute-cho, Aichi 480-1192, Japan. hiroshi-ito@mosk.tytlabs.co.jp <hiroshi-ito@mosk.tytlabs.co.jp>
Hayakawa
Kazuichi
K
Yamamoto
Atsushi
A
Murase
Atsushi
A
Hayakawa
Kazumi
K
Kuno
Minoru
M
Inoue
Yoshinori
Y
D002138:Calibration; D002849:Chromatography, Gas / Q000295:instrumentation* / Q000379:methods*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000737:chemistry; D044366:Transition Temperature
D011084:Polycyclic Aromatic Hydrocarbons