GCMS gas chromatography-mass spectrometry automatic sampler

GCMS gas chromatography-mass spectrometry automatic sampler

1. Operating environment

1.1 Environmental temperature: 18-35 ℃, temperature fluctuation within 2 degrees;

1.2 Relative humidity: ≤ 80%;

1.3 Applicable power supply: 220V (± 10%), 50Hz (± 2%);

2. Technical parameters and indicators

2.1 Mass spectrometry section

2.1.1ion source

2.1.1.1★sensitivityEI sensitivity: 1 pg OFN S/N 2500:1 (provide third-party measurement reports at or above the city or provincial level and use them as acceptance items)

2.1.1.2 IDL is superior to 10fg octafluoronaphthalene;

2.1.1.3Ion source material: Inert ceramic ion source

2.1.1.4Dual filament configuration: maximum filament current of 400uA;

2.1.1.5Ionization energy: 10-100eV;

2.1.1.6Ion source temperature: 150 ℃ -350 ℃;

2.1.2Quality Analyzer

2.1.2.1▲Quality analyzer:High precision metal quadrupole with dual preset rods (provide physical pictures as proof and as an acceptance item)

2.2.2.2 Quadrupole rod temperature: Quality stability can be ensured without temperature control;

2.1.2.3▲Quality range: 1.5-1250amu， The software can set and detect (provide manufacturer's proof materials))；

2.1.2.4Quality axis stability: better than 0.10 amu/48 hours;

2.1.2.5 Scanning methods: full scan, selective ion monitoring, full scan and selective ion synchronous monitoring, alternating scan;

2.1.3detector

2.1.3.1★Detector: Long life 13 level non continuous dynode electron multiplier; (Provide physical pictures as proof and use them as acceptance items)

2.1.3.2maximumscanning speed：20,000 amu/ s，Speed adjustable throughout the entire process；

2.1.3.3 Dynamic range: 10⁷；

2.1.4 Mechanical pump pumping speed ≥ 4m3/h;

2.1.5▲Ion source, quadrupole independent dual chamber（Provide physical pictures as proof and use them as acceptance items

2.1.6★Turbomolecular pump, pump pumping speed ≥ 250L/s. （Provide physical pictures as proof and use them as acceptance items

GCMS gas chromatography-mass spectrometry automatic sampler

2.2 Gas chromatograph parameters;

2.2.1column oven

2.2.11. Column box volume: ≥ 15L

2.2.1.2 Operating temperature range: 4 ℃ to 450 ℃ higher than the ambient temperature. LN2 liquid nitrogen cooling can be used, with an operating temperature range of -80 to 450 ℃; CO2 cooling can be used, operating temperature range: -40 to 450 ℃

2.2.1.3. Temperature setting accuracy: ≥ 0.1 ℃

2.2.1.4Supports 32 step column box temperature gradient, 33 constant temperature platforms, and gradient cooling

2.2.1.5Maximum heating rate: ≥ 120 ℃/min

2.2.1.6Maximum running time: 999.9min

2.2.1.7★ Column box cooling, from 450 ℃ to 50 ℃ ＜3.5min

2.2.1.8▲Column box fan 4-stage speed regulation:低速、中速、高速、极速(Provide proof materials and use them as acceptance items)

2.2.2. Injection port

2.2.2.1Split/non split injection port

2.2.2.1.1Maximum operating temperature: 450 ℃.

2.2.2.1.2The column head pressure setting range is 0-100psi, which can be upgraded to 0-150psi.

2.2.2.1.3The pressure control accuracy is ± 0.001 psi

2.2.2.1.4The diversion ratio can reach7500:1, avoid overloading the chromatographic column.

2.2.2.1.5Column flow control modes: constant pressure mode, gradient pressure mode, constant flow mode, gradient flow mode

2.2.2.1.6Total flow setting range: N2: from 0 to 500 mL/min; H2 (or He): from 0 to 1250 mL/min

2.2.2.1.7、▲Spacer blowing electronic flow control, set range 0~100ml/min(Provide proof materials and use them as acceptance items)

2.2.3、 two4Automatic liquid sampler

5.0-inch visual human-machine interactive touch interface

Syringe specifications: 1. (domestic) 5. 10. 25. 50. 100. 250. 500 (unit: μ l)

Sample bottle position:24bit

Solvent bottle position: 2 positions

Waste liquid bottle position: 1 position

Injection frequency per bottle: 1 to 99 times

Minimum injection volume: 0.1 μ l

Maximum injection volume: 250 μ l

2.2.4Instrument control panel

★2.2.41. 7-inch color touch screen, graphical control interface, capable of method editing, sequence operation, data acquisition, real-time display of spectra, instrument diagnosis and maintenance, status viewing, and hardware configuration

2.2.42. Equipped with a built-in 4G module, it can achieve human-machine separation and remote control through computers, mobile phones, and tablets.

▲2.2.43. Local or remote instrument firmware and touch screen operating system can be upgraded with one click through the instrument touch screen(Provide proof materials and use them as acceptance items).

2.2.4.4The touch screen can save test data locally, synchronize data with the chromatography workstation, and copy data through a USB interface

3.Software sideLaw:

3.1.1 Integrated control of mass spectrometer and gas chromatograph in Chinese; The synchronous scanning function can obtain both scan and sim data in one injection test, improving analysis efficiency; The alternating scanning function can be performed alternately with scan and sim, expanding the analysis function.

3.1.2 During operation, a time interval can be set to turn off the filament and electron multiplier to protect the filament. The electron multiplier can avoid solvents or other easily saturated substances that peak at intermediate times.

3.1.3 The software can automatically select the characteristic ions of the target compound and group them based on the data obtained from the full scan, and save them to the analysis method without manual input;

3.1.4 Manual/automatic tuning, data acquisition, quantitative analysis, and spectral library retrieval functions, analysis result report output;

3.1.5 Automatic shutdown;

3.1.6 Chromatographic flow monitoring; Chromatography gas cut-off, mass spectrometry ion source and transmission line automatic cooling protection, mass spectrometry stops running;

3.1.7 Real time monitoring of molecular pump speed and current, with abnormal prompts.

3.1.8 Choose ion mode detection (SIM) with no limit on the number of groups, and each group can select up to 128 ions.