Product Introduction:

Environmental air or standard gas enters the sampling system at a constant flow rate, and low-temperature enrichment concentration technology and semiconductor electronic refrigeration are used to enrich volatile organic compounds. Combined with gas chromatography/mass spectrometry to detect atmospheric volatile organic compounds (VOCs), the concentrations of each component of VOCs are obtained, which are ozone and PM_2.5Governance provides data basis and solutions.

System features:

1. The high-performance dual cavity single quadrupole mass spectrometer uses an ion source and a quadrupole mass analyzer to exhaust gases separately, forming a highly vacuum system. A super efficient vacuum system has the following advantages:

(1) Ensuring a high vacuum level in the quality control system effectively reduces source contamination and minimizes maintenance operations on the ion source;

(2) Realize rapid start-up of the instrument, sample analysis can be performed within 30 minutes of startup, improving the stability of the instrument and the reliability of data;

(3) Allowing a maximum column flow rate of 5ml/min, it can be connected to a wide caliber capillary column with an inner diameter of 0.32mm, achieving high throughput and high expansion requirements for analysis such as large volume injection;

(4) The electron multiplier is in a high vacuum state, achieving ultra-high sensitivity detection. Gas chromatography is directly injected, and the detection limit of octafluorocai is better than 10fg.

2. Using a quadrupole mass analyzer with pre quadrupole, reducing contamination of the quadrupole, optimizing the transition electric field between the ion source and the quadrupole, and synchronously scanning the voltage on the pre quadrupole with the analyzer voltage, the maximum ion signal can be focused to the center of the quadrupole field.

3. High temperature inert ceramic ion source: efficient ionization, reduces pollution, equipped with two filaments made of long-life inert materials, providing double the usage time. The ion source ceramic design ensures stable lens temperature and easy cleaning of the ion source.

4. The injection methods are diversified, in addition to online direct injection, it also has the function of using coding tanks, gas bags or adsorption tubes for injection, which is convenient for comparison with laboratory methods.

Technical parameters: