Instrument usage and application scope
The HZSV-3400A multifunctional thermal desorption analyzer can be used with all imported and domestic gas chromatographs, and the minimum detection concentration of volatile organic compounds in the environment can reach ppb level. The HZSV-3400A multifunctional thermal desorption analyzer can meet the requirements of "Determination of Benzene in Indoor Air" and "Determination of Total Volatile Organic Compounds (TVOC) in Indoor Air" in GB50325-2010 "Code for Indoor Environmental Pollution Control of Civil Building Engineering". In addition, it can also be applied to the following fields:
1. Occupational safety, industrial hygiene, and environmental monitoring;
2. Rapid identification of unknown atmosphere;
3. Analysis of spices and essence;
4. Assessment of toxic substance accidents (when personnel can safely return to the accident site);
5. Perimeter environmental safety monitoring of chemical weapons warehouses;
6. Quality control testing in polymer and packaging industries;
7. Evaluation of drug solvents and product purity;
8. Residual analysis of drugs and court samples;
9. Collect exhaled gases from patients and detect volatile drug metabolites in their blood in hospitals.
Instrument features and main functions
1. Integrated design of thermal desorption instrument, simulated sampling, and adsorption tube activation instrument, more practical and convenient;
2. Automated design, versatile and easy to operate;
3. Microcomputer control, large screen LCD display, touch keyboard, numerical input, main functions include:
⑴ Method parameter settings, real-time working status, and running time;
⑵ The desorption furnace, injection valve, and sample transfer tube are all heated and temperature controlled, and the activation furnace and desorption furnace are controlled by the same program;
⑶ Set program control, press the run button to automatically complete the entire sample analysis;
⑷ It can store 9 methods for easy calling at any time, achieving fast startup and analysis;
⑸ The GC and chromatographic data processing workstations can be started synchronously, and the device can also be started using external programs;
4. Equipped with an external carrier gas regulation system, the GC instrument can be operated without any modification or change, and the original instrument carrier gas can be used;
5. Desorption injection analysis and activation adsorption tube can be performed simultaneously without affecting each other;
6. The adsorption tube after desorption has an automatic blowback function;
7. Through foreign affairs time programming, automatic functions such as desorption, injection, analysis, and post analysis blowback can be achieved;
8. For active substance analysis, an elastic quartz tube can be selected as the sample transfer tube;
9. The key components used for driving are imported pneumatic components;
10. The injection needle is easy to replace and can be connected to all models of GC injection ports at home and abroad.
4、 Main technical performance of the instrument
1. Temperature control range in the sample area:
Room temperature -400 ℃, with an increment of 1 ℃, set heating power of approximately 200W;
2. Temperature control range of activation furnace:
Room temperature -400 ℃, with an increment of 1 ℃, the heating power is approximately 400W;
3. Temperature control range of valve injection system:
Room temperature -180 ℃, with an increment of 1 ℃, set heating power of approximately 60W;
4. Temperature control range of sample transfer pipeline:
Room temperature -200 ℃ with increments of 1 ℃. The heating power is approximately 40W
(For operational safety, low voltage power supply is used for temperature control of the transmission pipeline);
5. Temperature control accuracy:< ±0.5℃ ；
6. Temperature control gradient:< ±0.5℃；
7. Number of activated adsorption tubes: 6
8. Desorption recovery rate:>95% (depending on the composition);
9. Activation blowback and simulated sampling flow rate: 0-300ml/min (continuously adjustable);
10. Instrument size: 400 × 170 × 300mm3;
11. Instrument weight: approximately 15kg.