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process and device for simulated distillation by gas chromatography with direct injection unverdampfter.
process and device for simulated distillation by gas chromatography with direct injection unverdampfter.
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机译:气相色谱直接进样降温模拟蒸馏的方法和装置。
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摘要
The invention concerns a method and an equipment for the simulated distillation, by means of gas chromatography, of petroleum products, capable of characterizing also high boiling products, exceeding C55, over 600 C TBP. A chromatograph is used with a capillary column having a length less than or equal to 10 m, containing an immobilized non polar polydimethylsilicon gum stationary phase with a film thickness less than or equal to 0.2 mu m. The sample is introduced through a non vaporizing direct cold on-column injection and the eluted sample is detected by means of a FID detector. The column oven is operated in temperature programming conditions up to temperatures exceeding 400 (up to 430-450 C.).
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