Chemical Ionization Time-of-Flight Mass Spectrometer (CI-TOF)

Main functions

1. Sampling flow rate: 50–500 sccm;

2. Reaction chamber pressure: 50–80 mbar;

3. Mass range: 1–4000 amu;

4. Sensitivity:

5000 cps/ppbv (79 Th, benzene)

10000 cps/ppbv (107 Th, xylene);

5. Response time: <100 ms;

6. Detection limit:

<1 ppt xylene (107 Th) / min
<10 ppt xylene (107 Th) /s;

7. Linear range: 1 pptv–5 ppmv (benzene);

8. Signal intensity dynamic range: >10,000 (within 1 s)

9. It is equipped with a Proton Transfer Reaction Ion Source (PTR), which can provide the reaction ion H₃O⁺, and a switchable reaction ion module including: NO⁺, O₂⁺, NH₄⁺;

10. It has a nitrate ion source;

11. It has an extractive electrospray ionization source;

12. It has a breathing apparatus sampling system;

13. It has a preconcentration gas chromatography system.

Main functions

1. Vocus CI-TOF is a real-time chemical ionization mass spectrometer that can measure trace volatile organic and inorganic compounds in the air. It can directly sample, analyse and report volatile organic and inorganic compounds (VOCs and VICs) in complex mixtures in real-time, without chromatography. VOCs and VICs are ubiquitous chemicals that play a significant role in many systems, including health, the environment, food, and industry.

2. Vocus CI-TOF limits fragmentation so that molecular ions can be observed in real-time at high-resolution. Vocus CI-TOF delivers sub-ppt (part-per trillion) detection limits for the measurement of VOCs and VICs, optimized for use in laboratories, industrial sites, and mobile applications.