GAS CHROMATOGRAPHY MASS SPECTROMETER ,TRIPLE QUADRUPOLE (GC MS/MS)

Sole manufacture in China 

Gas chromatography triple quadrupole mass spectrometer integrates the strong identification ability of high-efficiency separation of gas chromatography and triple quadrupole tandem mass spectrometry. It has sufficient sensitivity and selectivity, good stability and strong anti-interference ability. It is suitable for high-sensitivity qualitative and quantitative analysis of trace pesticides and veterinary drugs in complex matrix.

two work environment

1) Working environment temperature: 18-25 ℃

2) Working environment humidity: (20 ~ 60)% RH

3) Power supply: five groups of single-phase (220 ± 20) V AC, 10a, 50 Hz power supply

3. System technical requirements:

3.1 configuration and performance requirements of gas chromatograph

3.1.1 column temperature box

3.1.1.1 maximum service temperature: 450 ℃;

3.1.1.2 heating rate: up to 120 ℃ / min, typically 50 ℃ / min; It can meet the seventh order and eighth stage programmed temperature rise, and the reproducibility is better than 0.5%; Cooling time from 450 ℃ to 50 ℃ ≤ 5min;

3.1.1.3 temperature control accuracy: ± 0.05 ℃;

3.1.2 split and non split injection ports

3.1.2.1 maximum service temperature: 450 ℃;

3.1.2.2 gas circuit system: programmable electronic gas circuit control is adopted to provide various control modes such as constant voltage, constant current, programmed boost and programmed boost;

3.1.2.3 flow control: 0-200 ml / min (N2); 0-1000mL/min(He,H2);

3.1.2.4 pressure control: 0 ~ 100.00psi (689.5kpa);

3.1.2.5 control accuracy: ± 0.01kpa, pulse pressure injection can be carried out;

3.1.2.6 operation mode: shunt or no shunt;

3.1.3 gas injection valve

3.1.3.1 up to 8 gas injection valves are supported;

3.1.3.2 4, 6, 8 and 10-way gas injection valves can be selected, and automatic gas path switching can be carried out;

3.1.3.3 the pressure or flow of the injection valve can be controlled through the auxiliary electronic pressure and flow module;

3.1.3.4 the start and end time of injection can be directly controlled on the software;

3.1.4 programmable electronic gas path control

3.1.4.1 modular design is adopted, which can support up to 18 channels of electronic pressure and flow control;

3.1.4.2 the flow, pressure, linear speed, split ratio, etc. of the injection port are set directly through the workstation software or touch screen;

3.1.4.3 it has the function of automatic atmospheric pressure and temperature compensation.

3.2 mass spectrometry system configuration and performance index requirements

3.2.1 EI ion source: double filament, ionization energy 10 ~ 300ev, heating temperature 150 ℃ ~ 350 ℃.

3.2.2 sample injection interface: the gas-liquid interface adopts non cold point heat tracing technology, and the interface temperature is 50 ~ 400 ℃, so as to ensure the efficient transmission of GC-MS / MS samples

3.2.3 ion optical system:

 3.2.3.1 the 90 degree deflection design of the ion optical system can effectively filter the non ionized neutral particles and avoid the pollution of the rear quadrupole mass analyzer( The structural drawing stamped by the manufacturer shall be provided as evidence during bidding)

3.2.3.2 there is no redundant transmission rod in the ion transmission system, and ions can directly enter the four-stage rod to avoid ion loss in the transmission process.

3.2.4 quality analysis system

 3.2.4.1 mass analyzer: triple quadrupole mass analyzer adopts high-precision pure Mo material to ensure the best stability of mass axis.

3.2.4.2 grade IV rod: high precision pure Mo material is adopted to ensure the best quality and shaft stability.

 3.2.4.3 impact cell: the impact cell is composed of six-stage rods, with axial acceleration design, which can effectively eliminate ion pair crosstalk and ensure high-throughput analysis capability. The collision gas is high-purity nitrogen (purity ≥ 99.999%).

3.2.4.4 resolution: unit resolution (half peak width 0.5amu)

3.2.4.5 mass stability: < ± 0.1amu/24h.

3.2.4.6 scanning speed: up to 5000 amu / s

3.2.4.7 number of MRM channels: 100 channels / S

3.2.4.8 mass number m / Z range: EI, 5 ~ 1000amu;

3.2.4.9 sensitivity: EI, MRM mode: 10fg / UL ofn of 1ul, ≥ 1500:1

 3.2.4.10 scanning functions: full scan, SIM, product ion scan, precursor ion scan, neutral loss scan, MRM, etc.

3.2.5 detector

3.2.5.1 the electron multiplier tube technology has no positive and negative ion discrimination effect, long service life and ensures long-term data stability.

3.2.5.2 pulse counting detector to ensure the data reproducibility of low concentration detection limit.

3.2.5.3 positive and negative polarity switching time: ≤ 50ms

3.2.6 vacuum system: it is composed of mechanical pump and turbomolecular pump. The ion transport area and quality analysis area form a differential air extraction system with automatic power-off protection function.

3.2.7 workstation software:

3.2.7.1 basic features of software system: Windows 10 operating platform. The software can control gas chromatography, liquid chromatography and mass spectrometry, with built-in data processing and report editing functions; Automatically realize the function configuration and condition optimization of the instrument; Automatic quantitative function; Mass spectrometry data analysis and spectral database establishment and retrieval.

3.2.7.2 the system has the functions of automatic correction, instrument condition monitoring, etc.

3.2.7.3 the GC-MS / MS operation software can be installed on the personal computer, and the sample analysis data can be processed offline and the report can be generated by using this software.

 3.2.8 GCMSMS can be upgraded to gas-liquid-triple quadrupole mass spectrometer in the later stage( When bidding, provide the customer's on-site installation physical drawing of gas phase liquid phase triple quadrupole mass spectrometer, and attach the product model (which can be found on the official website of the headquarters)