Product Description, Technical Parameters, and Configuration

ITOFMS-1G is a commercial small-scale desktop electron bombardment ion source time-of-flight mass spectrometer with complete independent intellectual property rights. It has excellent functions of high resolution, high sensitivity, and high acquisition speed, achieving seamless integration with rapid gas chromatography. The birth of iTOFMS-1G sounded the horn for domestic mass spectrometry to move towards general-purpose high-end mass spectrometry instruments.

Fast Gas Chromatography Time of Flight Mass Spectrometry (Fast GC-TOFMS) is one of the promising gas chromatography-mass spectrometry technologies today and has been widely proven in practice. Compared with conventional gas chromatography-mass spectrometry, it can increase the analysis speed by 3 to 10 times (under the condition of ensuring sufficient resolution, it only takes ten minutes to separate and analyze the majority of medium or highly complex mixtures). Not only does it greatly improve work efficiency and save time costs, but it also has low requirements for chromatographic columns, significantly reducing instrument contamination and lowering maintenance and usage costs.

Performance advantages

Electron bombardment ion source: an electron bombardment source with high ionization efficiency and extraction efficiency, coupled with an optimized vertical introduction time-of-flight analyzer, has achieved full scan sensitivity that reaches the sensitivity of quadrupole mass spectrometry selective ion scanning (S/N>500:1 for 1pg OFN, S/N>50:1 for 0.1pg OFN), fully meeting the requirements of trace analysis

Quality analyzer: A time-of-flight analyzer designed with ion orthogonal introduction and two-stage reflector, which greatly reduces the initial energy dispersion of ions. It not only ensures higher resolution and wider mass range (1-1200 amu) than quadrupole gas chromatography-mass spectrometry, but also has high mass accuracy and long-term stability of less than 0.01 amu, thus achieving accurate window extraction of characteristic ions and greatly improving the signal-to-noise ratio of spectra

Signal acquisition and recording system: It adopts a high-speed analog-to-digital conversion recorder (1.5GHz/3GHz SPS) with hardware accumulation function, which is the fastest among similar products to date. Therefore, while obtaining a wider linear range, it can better record mass spectrometry peaks and improve the accuracy of quantitative analysis

Vacuum system: Designed with dual turbo molecular pumps and dual full range composite digital vacuum gauges, it can monitor vacuum in real-time; The molecular pump in the ion source region has a pumping speed of up to 350L/s, which not only meets the requirements of high flow rate, but also greatly reduces sample contamination and background interference

Electrical control system: a comprehensive and reliable vacuum monitoring and electrical protection system

Equipped with image batch processing templates: automatic baseline correction, automatic peak search, complex peak resolution function (Deconsolution), calculation of peak area and height, quantification, sample comparison, report generation, data output

Deconvolution function: Separate analytes from co current interferences

Provide * * new version NIST spectrum retrieval

Software advantages

The software system of Fast GC-TOFMS consists of two independently developed software sets: GC-TOFMS Master1.0 (real-time instrument control acquisition) and GC-TOFMS Analysis (data post-processing and analysis). Its main features are:

1. Complete the modular development towards object-oriented design, not only with rich and powerful functions, but also with a simple, intuitive, and efficient interface

2. The automatic tuning function using genetic algorithm can quickly achieve the best working state of the instrument

3. Equipped with automatic solvent protection and component overload protection, it maximizes the protection of the filament and detector

4. Innovative TIC graph automatic baseline correction function (SBC) and background removal technology make analysis more accurate

5. Adopting the latest version of the NIST retrieval spectrum library in China, the number of standard spectra has increased by 11% compared to the 08 version, and it has the function of self built spectra

6. The RSD and linearity automatic calculation function of multispectral graphs enables users to quickly understand the repeatability and stability status of the instrument

7. Diversified quantitative analysis methods can achieve area normalization with correction factors, internal standard method and external standard method, and complete accurate quantitative calculation of samples

technical parameter

Quality range: 1~1200amu

Ion source: electron bombardment ion source, dual filament design (with automatic solvent protection function and software automatic switching)** Large electron emission current of 300 μ A, emission energy of 0-200eV; Ion source * * high temperature 300 ℃, transmission line * * high temperature 400 ℃

Quality resolution: 2000~3000 (M/z=502Th)

Detection sensitivity: 1pg/μ l OFN, S/N>500 (RMS)； 0.1pg/μl OFN, S/N>50 (RMS)

Acquisition speed: 200spectrum/s (repulsion pulse frequency 15kHz)

Acquisition card: ADC (1.5/3GHz SPS, with hardware accumulation)

Quality axis stability: less than 0.01 amu (within one week)

Linear range: 104

Vacuum system: twin turbo molecular pump (350L/s+70L/s), Front stage rotary vane mechanical pump (standard, optional vortex dry pump); One Pirani digital gauge (front stage) and two full range composite high vacuum digital gauges

application area

petrochemical industry

Essence

Tobacco and Liquor Industry

Food Safety and Environmental Protection

Identification of Traditional Chinese Medicine and Drug Metabolism