- overview
ATD-8048The series dual injection fully automatic secondary thermal desorption instrument is a fully automatic thermal desorption instrument with electronic cold trap and secondary adsorption desorption function, which can simultaneously desorb two sample tubes. Realize fully automatic operations such as primary desorption, secondary cold trap focusing, and secondary desorption of dual channel sample tubes, solving the problems of poor peak shape and low desorption rate in primary desorption. At the same time, dual channel injectionImproved experimental efficiency, with the advantages of high work efficiency and cost-effectiveness compared to traditional thermal desorption.
- performance index
- One desorption (adsorption tube) temperature control range: room temperature~420 ℃, step size 1 ℃
- Six way valve injection system temperature and control range: room temperature~220 ℃, step size 1 ℃
- Sample transmission pipeline temperature and control range: room temperature~220 ℃, step size 1 ℃
- Secondary desorption (focusing tube) temperature control range: room temperature~450 ℃, step size 1 ℃, heating rate>3000 ℃/min
- Cold trap (electronic semiconductor refrigeration) temperature control range: -40 ℃ to room temperature, step size 1 ℃, no need for liquid nitrogen refrigeration
- Temperature control accuracy:<± 0.1 ℃
- Temperature control gradient:<± 0.1 ℃
- Gas path pressure resistance:>0.4MPa
- Sample grade:24 digits * 2 (48 digits)
- Output:2 desorption outputs, capable of simultaneously desorbing 2 sample tubes
- Backflow rate: 0-100ml/min (continuously adjustable)
- Simulated sampling flow rate: 100ml/min
- Sample desorption, blowing, injection, and blowback time:
Sample desorption time: 0s to 1000min
Sample blowing time: 0s to 1000min
Sample injection time: 0s to 1000min
Backblowing time of pipeline: 0s to 1000min
- Timing range: 1s-1000min
- Timing error:<0.1%
- Analysis accuracy: RSD<2.5% (related to GC performance and operating techniques)
- Adsorption tube specifications: diameter: Φ 6mm/Φ 6.35mm, length: 89mm
- Synchronous signal output: 2 switch signals, with a linkage switch time of 1-2 seconds
- Power supply: AC220V 50Hz
- Power: 1000W (peak)
- Instrument size: 700 × 350 × 540mm3
- Instrument weight: approximately 45kg
- MAIN FUNCTION AND FEATURES
- The fully automated system is safe and reliable, and does not require personnel to be on duty
- Modular design of software and hardware, compact structure
- Can simultaneously desorb two sample tubes, with high work efficiency
- Featuring dual desorption outputs and high cost-effectiveness
- Strong universal performance: can be used in combination with almost all brands of gas chromatographs (GC) and gas chromatography-mass spectrometry (GC-MS)
- Simple human-computer interaction, easy operation, high degree of automation (software automatically completes the desorption and injection analysis process of all adsorption tubes), good sample repeatability
- Equipped with a large touch LCD screen, the interface information is rich and complete, the operation is simple, the method parameters are set, the working status and running time are displayed in real time, and the temperature and operation commands are tracked throughout the process
- Adsorption tube, injection valve, transfer tube, and focusing tube (cooling, heating) can all be individually controlled for temperature. There are 10 methods for editing, storing, and calling at any time, and one click automatic completion of sample analysis
- Simple sample processing: The sample tube is detachable, making it easy to carry and collect samples in the field
- The cold trap adopts semiconductor cooling and air cooling, with a minimum cooling temperature of -40 ℃ (at room temperature of 20 ℃)
- 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
- 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
- The sample pipeline adopts silane inert treatment stainless steel pipe to reduce residual pollution
- Equipped with leak detection and fault alarm functions
- The outstanding cooling temperature and heating rate ensure accurate chromatographic peak shapes
- Allow for secondary sample addition during the experimental process without the need for resetting or interrupting the original experimental sequence, flexible and convenient
Common application areas and examples
- Analyze the composition of volatile aroma and flavor compounds in food, and determine residual substances and pollutants in food
- Analyze the composition of thermally degradable compounds in solid matrices, such as plasticizers, additives, monomers, etc. in polymer materials (the degradation products of these samples are determined by adsorption thermal desorption analysis, which is helpful for the investigation of arson cases)
- Separate unwanted components from the sample matrix, such as residual solvents in pharmaceuticals, residual monomers in polymers, and other oligomers
- Purposefully collect volatile components in the sample matrix, such as polluted atmosphere, salt, and sugar. At present, the typical application is to monitor the environment and collect volatile organic pollutants (benzene derivatives, VOCs) in the air using adsorption tubes
- Used for the analysis and determination of special solids and liquids (such as soaking cotton in a tube)
- One thermal desorption is generally only used for lower boiling temperature components (C2-C13), and inorganic and permanent gases are not easy to produce. If a low-temperature adsorption trap (secondary thermal desorption) is used, it can achieve a boiling point<C36 for volatile samples
- The combination of secondary adsorption pyrolysis and GC/MS has a wider range of applications, which can solve the analysis and determination of complex types of samples, including environment, materials, fuel resources, food, pharmaceuticals, polymers, and various other commodities
- Partial standards suitable for thermal desorption gas chromatography:
- GBT 50325-2020Code for Indoor Environmental Pollution Control of Civil Building Engineering
- GBT 18883-2002Indoor Air Quality Standards
- GB/T 33871-2017Determination of Total Volatile Organic Compounds (TVOC), Benzene, and Styrene in Toner
- GB 18587-2001Indoor decoration materials, carpets, carpet liners, and carpet adhesives, limit the release of harmful substances
- GBT 27630-2011Guidelines for Evaluating Air Quality in Passenger Cars
- GB 36246-2018Synthetic material surface sports field for primary and secondary schools
- HJ 583-2010Determination of Benzene Compounds in Environmental Air by Solid Adsorption/Thermal Desorption Gas Chromatography Method
- HJ 644-2013Determination of volatile organic compounds in ambient air - Adsorption tube sampling - Thermal desorption/gas chromatography-mass spectrometry method
- HJ/T 400-2007Sampling and determination methods for volatile organic compounds and aldehydes and ketones in vehicles
- HJ734-2014Determination of volatile organic compounds in exhaust gas from fixed pollution sources using solid-phase adsorption thermal desorption/gas chromatography-mass spectrometry method
- IEC 62321-8-2017Determination of certain substances in electrical technology products Part 8: Determination of phthalates in polymers using gas chromatography-mass spectrometry (GC-MS) with Py/TD-GC-MS gas chromatography-mass spectrometry equipped with thermal cracking/desorption attachments
- ASTM D7823-2016Standard Test Method for Low Level Adjusted Phthalates in Polyvinyl Chloride Plastics by Thermal Desorption Gas Chromatography/Mass Spectrometry
- ASTMD6196-2015Standard Practice for Selecting Adsorbents, Sampling Parameters, and Thermal Desorption Analysis Conditions for Monitoring Volatile Organic Compounds in the Air
- ASTMD7339-2012Standard test method for determining volatile organic compounds emitted from carpets using specific suction tubes and thermal desorption/gas chromatography
Shandong Luchuang Analytical Instrument Co., Ltd
Contact: Manager Zhang
Phone: 0632- 5866189
Fax: 0632- 5866179
http://www.lcsepu.com
E-mail:zw9596@163.com