GC-MS 7220

Product Overview：

GC-MS 7220 is a high-performance single quadrupole gas chromatograph developed independently by Shenzhen Junhuiteng Technology Co., Ltd. The detection limit is better than 10-4g, reaching the mainstream level of similar products in the world. It can be widely used in industrial manufacturing, chemical raw materials, environmental monitoring, scientific research and other industries.

GC-MS is the effective separation of a mixture using chromatography, followed by mass spectrometry identification. It is a strong combination, where one plus one is greater than two. Gas chromatography-mass spectrometry (GC-MS) combines the advantages of efficient separation by chromatography and high sensitivity and strong qualitative specificity by mass spectrometry, and is widely used for qualitative and quantitative analysis of organic compounds.

File Download

Professional software easy to operate

Strong qualitative ability and good stability

Strong scalability and precise data

High sensitivity low detection limit

Product Features

Adopting a high-performance high-speed turbo molecular pump, the ion source, quadrupole, and detector are separated into two independent chambers, maintaining an excellent vacuum environment for the quadrupole and detector, minimizing ion loss at the quadrupole, reducing background interference, and improving detection sensitivity and stability.
MS 7220， The quality range is 1.5-1250amu, leading the industry. Satisfy the detection of high molecular weight samples such as polybrominated biphenyls and polybrominated diphenyl ethers.
High sensitivity. 7220 GCMS 1pg octafluoronaphthalene m/z272 signal-to-noise ratio 800:1, instrument detection limit better than 10fg, reaching the level of imported instruments.
The gas chromatography electron pressure accuracy is 0.01psi, the temperature control accuracy is 0.1 ℃, the high-precision quadrupole and long-life electron multiplier jointly ensure the retention time repeatability is better than 0.02%, and the peak area repeatability is better than 1%, which is internationally first-class.
Equipped with synchronous scanning function, it can simultaneously obtain scan and sim data for one injection test, improving analysis efficiency; Equipped with alternating scanning function to scan and sim alternately, expanding analysis capabilities.
Turning off the filament and electron multiplier during operation can avoid solvents or other easily saturated substances that may peak at intermediate times.
Cylindrical ion source lens group, pin type electrode, easy to disassemble, convenient for cleaning and maintenance, ceramic insulation component, uniform temperature, high temperature resistance, ultra clean, up to 350 ℃, can be baked at high temperature, anti pollution. Feedback on the voltage status of the ion source lens for easy viewing.
Equipped with an ion source observation window, it can intuitively determine the state of the filament. Integrated control of mass spectrometer and gas chromatograph in Chinese; One click shutdown; Chromatographic flow monitoring; Chromatography gas cut-off, automatic cooling protection for mass spectrometry ion source and transmission line; Real time monitoring of molecular pump speed and current, with abnormal prompts.
24 bit automatic sampler can be configured, compatible with mainstream manufacturers' thermal analysis, headspace, and blowdown capture.

Scope of application

GC-MS 7220 gas chromatography-mass spectrometer is a high-performance single quadrupole gas chromatography-mass spectrometer independently developed by Shenzhen Junhuiteng Technology Co., Ltd. The detection limit is better than 10-4g, reaching the mainstream level of similar products in the world. It can be widely used in industrial manufacturing, chemical raw materials, environmental monitoring, scientific research and other industries.

Response testing: Parabenzenes (PAEs): 4P, 6P, 16P, 22P polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs), azo dyes (AZ0), polycyclic aromatic hydrocarbons (PAHs), methanol (formaldehyde), paraffin wax (SCCPs), fumaric acid (DMFU), dimethylformamide (DMFA), nonylphenol (NP), benzene, alcohols, ketones, halogenated hydrocarbons, VOCs. RoHS 2.0 regulation response, CP 65 regulation response, REACH regulation response should be equivalent.

Technical Parameter

runtime environment

（1）ambient temperature：18-28℃；
（2）relative humidity：≤80%；
（3）Suitable power supply：220V(±10%),50Hz(±2%)；

main performance index

（1）Sensitivity: 1 pg octafluoronaphthalene OFN S/N≥1500:1;The instrument detection limit IDL is better than 10fg octafluoronaphthalene (100 fg, OFN, 8 consecutive injections, m/z272, 99% confidence level statistically)，IDL≤10fg）；
（2）mass range：1.5-1250amu；
（3）Quality stability：±0.10 amu/48 hrs；
（4）Quality accuracy：±0.10 amu；
（5）Maximum scanning speed：20000 amu/s，The speed is adjustable all the way；
（6）resolution ratio：0.4-4amuadjustable；
（7）dynamic range：107；
（8）Peak area reproducibility＜2% RSD；
（9）Scanning mode: full scanning, selective ion monitoring, full scanning and selective ion synchronous monitoring, alternating scanning；

ion source

（1）Ion source type: electron bombardment source（EI）；
（2）Ion source configuration: inert ceramic ion source, double filament software switching；
（3）filament current：0-500μA；

mass analyzer

（1）Mass analyzer: high-precision all-metal quadrupole with pre-quadrupole；
（2）The quadrupole is superior to not controlling the temperature, and the quality stability index can be guaranteed without controlling the temperature；
（3） The pre-quadrupole can be disassembled and cleaned to avoid the pollution of the main quadrupole；
（4）Quadrupole has the technology of optimizing ion energy, optimizing the speed of ions passing through quadrupole and improving signal quality；

detector

（1）Long-life 13-stage discrete dynode electron multiplier；
（2）A lens system equipped with 10kV conversion dynode and neutral noise removal；

vacuum system

（1）Pump speed of backing pump≥4m³/h；
（2）Equipped with high-performance turbomolecular pump, pumping speed≥250L/s；
（3）Maximum allowable chromatographic column flow5ml/min（helium）；
（4）Hot cathode ionization vacuum gauge can be configured, and high vacuum reading can be directly read by software。

Gas chromatograph parameters

（1）Column box
（2）Temperature range: above room temperature5˚C-450˚C；
（3）Temperature control accuracy：≤0.01℃；
（4）Temperature programming：20-order 21 platform；
（5）Heating rate：Maximum heating rate of standard furnace120˚C/min；
（6）Cooling rate：At room temperature of 20℃, the standard furnace is less than 5 minutes from 350 C to 50 C, and the fast furnace is less than ≤3.5min；

injection port

（1）Split/Non-split capillary column inlet；
（2）maximum service temperature450˚C；
（3）High precision electronic pressure/flow control；
（4）Pressure setting range：0-100 psi，Control accuracy0.001psi；
（5）The injection port has four modes: pulse shunting, pulse non-shunting, shunting and non-shunting；
（6）Column control mode: with constant current, constant pressure, program flow, program pressure and other modes；
（7）Maximum shunt ratio≥7500；
（8）Retention time reproducibility≤0.008%。
（9）Total flow setting range：0-1000 mL/min（helium）；

Liquid automatic sampler

（1）Configure a 24-bit autosampler：
（2）Double tower sampling can be realized；
（3）The turret double inlet automatic sampler can realize the selection of inlet through software control；
（4）Adjustable sampling depth, injection depth；
（5）Automatic syringe cleaning function before and after injection: Solvents A and B are automatically cleaned for 0-15 times；
（6）Sampling accuracy deviation：＜1%
（7）Software reverse control setting automatic sampler；
（8）Sample size range：0.2-10μL;
（9）The autosampler has its own color display screen, which can synchronize parameters with the software；

Software workstation

（1）Integrated control of mass spectrometer and gas chromatograph in Chinese；
（2）The synchronous scanning function can obtain both scan and sim data at the same time in one sample injection test, which improves the analysis efficiency;Alternate scanning function can be performed alternately with scan and sim, which expands the analysis function；
（3）In the middle of operation, a time interval can be set to turn off the filament and the electron multiplier to protect the filament, and the electron multiplier can avoid solvents or other substances that peak at the middle time；
（4）The software can automatically select and group the characteristic ions of the target compound according to the data obtained by full scanning, automatically set the ion residence time and save it in the analysis method without manual input；
（5）Manual/automatic tuning, data acquisition, quantitative analysis and NIST library retrieval functions, analysis results report and output；
（6）The data format is readable by deconvolution AMDIS, which is directly used for co-outflow peak analysis；
（7）Chromatographic flow monitoring;Chromatographic gas cut-off, mass spectrometry ion source, transmission line automatic cooling protection, mass spectrometry stopped running；
（8）Real-time monitoring of molecular pump speed and current, abnormal prompt, one-button automatic stop。
（9）There is no limit to the number of groups for selecting ion mode detection (SIM), and each group can select up to 128 ions。