What is headspace sampling device

The headspace chromatography sampler can be connected with a variety of domestic and foreign gas chromatograph, it is the liquid or solid samples of volatile components directly into the gas chromatograph for separation and detection of the ideal sampling device, the use of the headspace technology, you can dispense with the lengthy and cumbersome sample pre-treatment process, to avoid organic solvents to bring in impurities to the analysis of the interference to reduce the contamination of the chromatographic column and inlet port;

At present, domestic and international applications of gas chromatography and examples of the following categories > At present, domestic and foreign headspace injection gas chromatography analysis of the application areas and examples of the following categories:

(1) petrochemical: polymer monomer coatings, etc., volatile organic compounds;

(2) environmental sciences: volatile halogenated hydrocarbons in drinking water and industrial wastewater in the organic toxic volatiles;

(3) health, disease prevention: disinfection and fumigation of medical supplies residue analysis;

p> (4) food industry: color wine, vinegar, soy sauce quality control, packaging materials, acetaldehyde residues, 6 # solvent residues in the leaching oil;

(5) spices and flavors: beer, tea in the flavor analysis;

(6) quality control of pharmaceuticals: organic residues of solvents in pharmaceuticals;

(7) forensic chemistry: determination of ethanol, ketones, aldehydes in blood and urine;

(8) Other: such as: volatile organic compounds in soil, etc.;

Imported headspace: the United States PE's; Italy Lideni Danny; Anjelun; Shimadzu, etc..

Domestic: three spectrum instrument

AHS-7890 headspace sampling device (positive pressure sampling, quantitative tube sampling)

1. Sample area temperature control range:

room temperature-200 ℃ in increments of 1 ℃ any heating power of about 400W;

2. Valve injection system temperature control range:

2. Temperature control range of valve feeding system:

Room temperature-160℃ in increments of 1℃ any set heating power of about 60W;

3. Sample transfer pipeline temperature control range:

Room temperature-160℃ in increments of 1℃ any set heating power of about 40W;

4. Temperature control accuracy: < ± 0.5℃;

5. Temperature control accuracy: < ± 0.5℃;

6. 0.5℃;

5 Temperature control gradient: < ±0.5℃;

6. headspace vial station: 9;

7. headspace vial specifications: the standard 20ml (10ml 50ml and other specifications can be customized);

8. Repeatability: RSD < 3% (and the performance of the GC related);

9. quantitative tube Specification: standard 1ml (available 0.5ml 3ml);

10. sampling pressure range: 0 ~ 0.4Mpa (continuously adjustable);

11. blowback cleaning flow rate: 0 ~ 20ml/min (continuously adjustable);

12. the effective size of the instrument: 200 × 360 × 420mm3;

13. The weight of the instrument: about 12 kg.