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| Example analysis of one-dimensional and two-dimensional gas chromatography |
| Li Yonggang, Guo Dongfeng, Liu Bin |
| Henan Energy and Chemical Industry Group, Hebi Coal Chemical Industry Corporation Ltd., Hebi 580000, China |
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Abstract The one dimensional gas chromatography is a separation system composed of one chromatographic column，it is mainly used to analyze samples with relatively single components. Usually, only one or two components can be separated. In view of the limitations of one-dimensional chromatography technology in the separation of samples with complex components in the process of practical application, in the two-dimensional gas chromatography technology, two independent chromatographic columns with different separation mechanisms were connected in series by modulators to form a two-dimensional gas chromatography system. The one-dimensional and two-dimensional gas chromatography systems dominated by valve modulation types were introduced, which is mainly used in the analysis of gasifier crude gas, methanol purified gas, methanol synthesis gas, methanol release gas, trace methane and non-total hydrocarbon.
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