Fully automatic secondary pyrolysis gas chromatograph
Function and Features:
1. The fully automated system is safe and reliable, and does not require personnel to be on duty
2. Modular design of software and hardware, compact structure
3. Strong universal performance: can be used with almost all brands of gas chromatographs(GC)Gas chromatography-mass spectrometry(GC-MS)combination use
4. Simple human-computer interaction, easy operation, high degree of automation(The software automatically completes the desorption and injection analysis process of all adsorption tubes)Good repeatability of the sample
5. Equipped with industrial grade touch LCD screen, the interface information is rich and complete, the operation is simple, the method parameter is set, the working status and running time are displayed in real time, and the temperature and operation commands are tracked throughout the process
6. Adsorption tube, injection valve, transfer tube, focusing tube(Refrigeration and Heating)Both can be individually controlled for temperature,10Multiple methods for editing, storing, and calling at any time, one click automatic completion of sample analysis
7. Simple sample processing: The sample tube is detachable, making it easy to carry and collect samples in the field
8. The trap adopts semiconductor refrigeration+Air cooling, cooling temperature can reach up to-40℃(room temperature20℃time)
9. The six way valve and transmission pipeline link have no transmission cold points, and can be temperature controlled and heated to reduce sample loss and ensure sample integrity. It comes with standard sample preparation function
10. Provide a synchronization interface, which can synchronously start gas chromatography, mass spectrometry, and chromatographic data processing workstations while injecting samples. The device can also be started using external event programs. The six way valve injection method effectively reduces dead volume and ensures injection accuracy
11. The sample pipeline adopts silane inert treatment stainless steel pipe to reduce residual pollution
12. Equipped with leak detection and fault alarm functions
13. Equipped with automatic monitoring function for the service life of the focusing tube
14. The prominent cooling temperature and heating rate ensure accurate chromatographic peak shapes
Fully automatic secondary pyrolysis gas chromatograph
Performance indicators:
1. One desorption(Adsorption tube)Temperature control range: room temperature~420℃Step size1℃
2. Six way valve injection system temperature and control range: room temperature~220℃Step size1℃
3. Sample transmission pipeline temperature and control range: room temperature~220℃Step size1℃
4. Secondary desorption(Focusing tube)Temperature control range: room temperature~450℃Step size1℃Heating rate>3000℃/min
5. cold trap(Electronic semiconductor refrigeration)Temperature control range:-40℃~Room temperature, step size1℃No need for liquid nitrogen refrigeration
6. Temperature control accuracy:<±1℃
7. Temperature control gradient:<±1℃
8. Gas path pressure resistance:>0.4MPa
9. Sample grade:10/20/30bit double circle2*20bit optional
10. Backflow rate:0.1-100ml/min(continuously adjustable)
11. Simulated sampling flow rate:100ml/min
12. Sample desorption, blowing, injection, and blowback time:
Sample desorption time:0.01s~1000min
Sample blowing time:0.01s~1000min
Sample injection time:0.01s~1000min
Backblowing time of pipeline:0.01s~1000min
13. Timing range:1s~1000min
14. Timing error: better than0.1%
15. Analysis accuracy:RSD<2.5%(andGCRelated to performance and operational technology)
16. Adsorption tube specification: diameter:Φ6mm/Φ6.35mm, Length:89mm
17. Synchronization signal output:2Road switch quantity, linkage switch time is1~2second
18. power supplyAC220V 50Hz
19. Power:800W(peak)
20. Instrument size:700×350×540mm
21. Instrument weight: approximately38kg
Common application areas and examples:
1. Analyze the composition of volatile aroma and flavor compounds in food, and determine residual substances and pollutants in food
2. Analyze the composition of thermally degradable compounds in solid matrices, such as plasticizers, additives, monomers, etc. in polymer materials(These degradation products of the samples were subjected to adsorption, pyrolysis, and separation Analysis and determination contribute to the investigation of arson cases)
3. Separate unwanted components from the sample matrix, such as residual solvents in pharmaceuticals, residual monomers in polymers, and other oligomers
4. Purposefully collect volatile components in the sample matrix, such as polluted atmosphere, salt, and sugar. The current typical application is to monitor the environment and collect volatile organic pollutants in the air using adsorption tubes(Benzene derivativesVOCs)wait
5. Used for special removal of solids and liquids(If soaked in cotton and placed in a tube)Analysis and determination
6. One thermal desorption, generally only used for lower boiling temperature components(C2~C13)Inorganic andyongjiuGas is not easy to make. If using a low-temperature adsorption trap(Secondary thermal desorption)Can achieve boiling point
7. Secondary adsorption pyrolysis and absorption of samplesGC/MSCombined use, with a wider range of applications, can solve the analysis and determination of complex types of samples, including environment, materials, fuel resources, food, pharmaceuticals, polymers, and various other commodities, etc
TVOC Classic Spectrum:

Injection method: secondary thermal analysis(TCPipe)+Split injection
Detector:FID
Peak order:1N-hexane;2Benzene;3Trichloroethylene;4Toluene5Octene;6Ethyl acetate;7Ethylbenzene;8, p-xylene, m-xylene;9Styrene;10Ortho xylene;11Nonane;12Isooctanol;13Undecane;14Tetradecane;15Hexadecane;
Applicability: Compliant withGB/T 50325-2020TheGB/T 18883-2002