Fully automatic thermal desorption instrumentIt is a high-precision and high-efficiency analytical instrument that works by using high-temperature technology to thermally analyze organic compounds in samples. During the analysis process, organic compounds in the sample will gradually evaporate with increasing temperature, and then be collected through condensation and collection. In addition, the fully automatic thermal desorption instrument also involves two key processes: heating and desorption. Heating is the process of heating a sample to a certain temperature, causing molecules on its surface to detach. This process requires temperature control to avoid excessive heating of the sample, which can lead to molecular decomposition or reaction; Desorption refers to the detachment of molecules adsorbed on the surface of a sample, which are then carried out of the sample by an inert gas flow (such as helium or nitrogen) and transported to a mass spectrometer or other detection equipment for analysis.
Fully automatic thermal desorption instrumentThe main application scope is:
1、 Environmental monitoring
This is a classic and widely applied field of thermal desorption technology.
Environmental air detection: used to monitor VOCs such as benzene derivatives (BTEX), halogenated hydrocarbons, aldehydes and ketones in the atmosphere. Can be used in conjunction with adsorption tubes for passive or active sampling, meeting standard methods such as "HJ 644-2013 Determination of volatile organic compounds in ambient air - Adsorption tube sampling - Thermal desorption/Gas chromatography-mass spectrometry", with detection limits up to ppb or even ppt levels.
Indoor Air Quality (IAQ): assesses indoor air pollution in offices, residences, schools, and other places, detects harmful substances such as formaldehyde, benzene, TVOCs, etc., and ensures human health.
Soil and groundwater pollution investigation: Using headspace thermal desorption or direct thermal desorption techniques, analyze organic pollutants such as petroleum hydrocarbons, polycyclic aromatic hydrocarbons (PAHs), pesticide residues, etc. in soil and sediment.
Pollution source tracking: By analyzing the "fingerprint" of characteristic pollutants, identify the pollution sources around industrial areas and provide a basis for environmental law enforcement.
Emergency monitoring: At the scene of toxic substance accidents such as chemical leaks and fires, quickly identify unknown atmospheric components, assess the safety status of the scene, and determine when personnel can safely return.
2、 Industrial Production and Process Control
Automobile manufacturing:
Air quality inside the car: Following regulations such as VDA 278, directly analyze the VOCs and SVOCs released by car interior materials (such as seats, dashboard, carpets) to control air pollution inside the car.
VOCs monitoring in the painting workshop: online monitoring of VOCs concentration in the paint booth, achieving linkage control with exhaust gas treatment equipment (such as RTO), and reducing emissions.
Petrochemical industry: Monitor trace sulfides, hydrocarbons, etc. in raw gas and process gas to prevent catalyst poisoning and ensure product quality.
Pharmaceutical industry: Detect solvent residues in drugs to comply with regulatory requirements such as the Chinese Pharmacopoeia.
Electronics and lithium battery manufacturing: monitoring the emission and recovery efficiency of organic solvents (such as NMP) used in the production process.
3、 Occupational Health and Safety
Workplace air monitoring: According to the GBZ/T 300 series standards, use adsorption tubes to collect harmful substances (such as benzene, toluene, xylene, formaldehyde, etc.) in the workplace air, evaluate occupational exposure levels, and protect workers' health.
Monitoring around the chemical weapons warehouse: Conduct long-term and continuous environmental safety monitoring of sensitive areas.
4、 Food Safety and Consumer Product Testing
Food packaging materials: detect the migration of plasticizers, solvent residues, odor substances, and other substances released from food packaging materials such as plastics and paper during heating or storage.
Food and essence and spice analysis: used for the component analysis of essence and spice, as well as the identification of flavor substances and odor substances in food. By combining thermal desorption GC/MS, the volatile components of food can be analyzed without damage or with minimal damage.
Home products: detecting formaldehyde emissions from furniture, building materials, textiles, etc VOCs， Evaluate its environmental performance.