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Product Introduction

Chromatographic automatic headspace samplerCan be connected to various gas chromatographs both domestically and internationally,Chromatographic automatic headspace samplerIt is an ideal injection device for directly introducing volatile components from liquid or solid samples into a gas chromatograph for separation and detection.

It adopts gas injection and can specifically collect volatile components in the sample. Compared with liquid-liquid extraction and solid-phase extraction, it can avoid the loss of volatile compounds caused by solvent removal and reduce the noise caused by co extraction. It has higher sensitivity and analysis speed, less harm to analysts and the environment, and is easy to operate. It is an analytical method that meets the requirements of "green analytical chemistry".

The headspace analysis method is constantly updated and developed with the development of gas chromatography analysis methods, and modern headspace analysis has formed a relatively complete analysis system.

Product parameters

Headspace injection device (high pressure, pressurization, injection)

1. Temperature control range in the sample area:

Room temperature -160 ℃, with an increment of 1 ℃, set heating power of approximately 400W;

2. Temperature control range of valve injection system:

Room temperature -160 ℃, with an increment of 1 ℃, set heating power of approximately 60W;

3. Temperature control range of sample transfer pipeline:

Room temperature -160 ℃, with an increment of 1 ℃, the heating power is approximately 40W;

4. Temperature control accuracy:< ±0.5℃ ；

5. Temperature control gradient:< ±0.5℃；

6. Headspace bottle stations: 9;

7. Headspace bottle specifications: standard 20ml (10ml, 50ml, etc. can be customized);

8. Repeatability: RSD<3% (ethanol in 200ppm water);

9. Injection pressure range: 0-0.4Mpa (continuously adjustable);

10. Backblowing cleaning flow rate: 0-20ml/min (continuously adjustable);

11. Effective size of the instrument: 180 × 360 × 400mm3;

12. The weight of the instrument is approximately 12 kg.

It is mainly divided into three categories: static headspace analysis, dynamic headspace analysis, and headspace solid-phase microextraction.

The use of headspace technology can eliminate the lengthy and tedious sample pretreatment process, avoid impurities introduced by organic solvents from interfering with analysis, and reduce contamination of chromatographic columns and injection ports; Headspace chromatography technology has been widely used in environmental detection (such as volatile halogenated hydrocarbons in drinking water and volatile organic compounds in industrial wastewater), detection of organic residual solvents in drugs, food, forensic science, petrochemicals, packaging materials, coatings, and analysis in the brewing industry due to its simple and practical advantages.

For example, the headspace gas chromatography analysis of volatile components such as bananas, peppermint oil, roasted coffee, brandy, whiskey, etc., even without precise qualitative and quantitative analysis, the true odor or taste can still be understood from the chromatogram. In addition, it can be used in conjunction with sensory instruments such as electronic nose and electronic tongue, which has a good auxiliary effect on the detection and analysis of food, cosmetics, drugs, etc.

Headspace gas chromatography can also be used to determine solid polymers and polymer dispersions. This technology is much more sensitive for detecting residual monomers than the conventional method of dissolving high polymers and then precipitating them again. Headspace gas chromatography is also a fast and simple method for testing the chemical stability of polymers. By analyzing the gas in the container using gas chromatography, the performance of the container material in terms of resistance to water vapor and HCl gas at various temperatures can be understood.