Abstract
An ultra-micro sample injector for gas chromatography (GC) was developed. An ink-jet microchip, originally used for industrial recorder, was modified at the edge near to an orifice, and fixed into the GC. In order to evaluate the characteristics of this injector, a sample injector and a thermal conductive detector (TCD) were connected directly, while water was used as the test sample. The volume of the droplet, the interval time and the back-pressure to the ink-jet microchip were investigated. Within the range of 1–5 nL volume injected sample, the TCD response according to the amount of the sample volume (the volume of one droplet from the ink-jet microchip was about 1 nL) was obtained. A good reproducibility of the peak area was obtained to be about 1.0% of the RSD value. In order to compare the injection method of the ink-jet chip with that using a micro-syringe, the method using the ink-jet chip could introduce 1/1000 of the amount of the sample and gave reproducible results.
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This is an English edition of the paper which won the Best Paper Award in Bunseki Kagaku, 2005 [Bunseki Kagaku, 2005, 54(6), 533].
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Nishiyama, T., Endo, F., Eguchi, H. et al. Development of an Ultra-micro Sample Injector for Gas Chromatography Using an Ink-jet Microchip. ANAL. SCI. 23, 389–393 (2007). https://doi.org/10.2116/analsci.23.389
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DOI: https://doi.org/10.2116/analsci.23.389