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Citation: ZHU Wenhui, YANG Liu, CHEN Yongkuan, YANG Ji, LIU Hanqing, MIAO Mingming. Establishment of device used to release internal standard and its application to analysis of evolved behavior of pyrolysis products[J]. Chinese Journal of Chromatography, ;2017, 35(2): 211-215. doi: 10.3724/SP.J.1123.2016.09029 shu

Establishment of device used to release internal standard and its application to analysis of evolved behavior of pyrolysis products

1.
Hainan Hongta Cigarette Co., Ltd., Haikou 571137, China;
2.
China Tobacco Yunnan Industrial Co., Ltd., Kunming 650106, China;
3.
Ruili Entry-Exit Inspection and Quarantine Bureau, Ruili 678600, China

Received Date: 12 September 2016

Fund Project: China National Tobacco Corporation of Science and Technology Major Project (No. 110201401017 (XX-05)).

Internal standard was applied to the analysis of evolved behavior of pyrolysis products. Liquid drop supporting device of gas flow-liquid drop microextraction (GF-LDME) was improved. The coupling device used to release internal standard and enrich the pyrolysis products was established. The internal standard and pyrolysis products were extracted into liquid drop under the same conditions. Coupled the device with gas chromatography-mass spectrometer (GC-MS), the comparison of relative amount for each pyrolysis product between different temperature ranges was achieved. The evolved behavior of pyrolysis products for green coffee beans was investigated. The experiments were conducted at a flowing air rate of 200 mL/min and a heating rate of 10℃/min. Identification of 13 pyrolysis products between 100℃ and 400℃ and the monitoring of evolved behavior were carried out. The hydroxyacetone, azabenzene, furfuryl alcohol, γ-butyrolactone and n-valeraldehyde evolved reached to a maximum evolved quantity at 280-300℃, while acetic acid, phenol, 2-cyclopentenone, 2-methoxyphenol evolved reached to a maximum quantity at 300-320℃. The method has obvious advantages in the analysis of complex pyrolysis products.
- gas flow-liquid drop microextraction (GF-LDME),
- thermogravimetry (TG),
- analysis of evolved behavior,
- internal standard release device,
- pyrolysis,
- green coffee beans
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