Thermal split gas chromatographic solid automatic sampling thermal split device

Abstract

The invention discloses a thermal splitting device for automatic sample injection of thermal splitting gas chromatography solids and relates to gas chromatography accessory equipment. The device comprises a solid sample disc, an automatic sampling device, a needle feed device and a thermal splitting device, wherein a plurality of openings used for loading sample injectors are formed in the solid sample disc; the automatic sampling device comprises a sample injector gripping device used for clamping the sample injectors; sample injection needles are arranged on the needle feed device; the needle feed device can move along a vertical direction, so that the sample injection needles can stretch into the sample injectors; the thermal splitting device comprises a shell, a thermal splitting liner, an electric heating piece, an air inlet, an air outlet and a purge gas outlet; the thermal splitting liner is arranged in the shell; the electric heating piece is used for heating the interior of the thermal splitting liner; the air inlet is communicated with one end of the thermal splitting liner; and the purge gas outlet is communicated with the other end of the thermal splitting liner. According to the device disclosed by the invention, a manual repetition step during solid chromatographic sampling can be replaced, and the corresponding thermal splitting operation is automatically completed.

Description

technical field [0001] The invention relates to a chromatographic analysis accessory equipment, in particular to a thermal splitting gas chromatography solid automatic sampling thermal splitting device. Background technique [0002] At present, chromatographic technology has a wide range of applications. The design and development of many chromatographic auxiliary equipment has improved the efficiency of chromatographic applications and expanded the application fields of chromatography. Some solid (semi-solid / quasi-solid) samples that are difficult to volatilize and grind cannot become gaseous or cracked into small molecular gaseous components at the temperature of the chromatographic inlet, so that they cannot be chromatographically analyzed. Therefore, a higher temperature thermal splitter is required to realize the analysis of these hard-to-volatile and hard-to-grind solid samples. The thermal split device extends the range of chromatographic analysis applications, makin...

AI Technical Summary

Problems solved by technology

[0003] However, due to the diversity of solid samples, and the different thermal split sampling processes and conditions, it is often necessary to develop different sampling procedures according to different samples in experiments, and it is difficult to achieve complete automation. neglected

Images