Based on Orbitrap's dedicated in-situ soft ion source

GAIS is aIn situ soft ion sourceIt can achieve high sensitivity, fast, non-destructive, and high temporal resolution ionization. GAIS can obtain complete molecular ion information of gaseous and particulate organic matter to avoid the fragmentation of the analyte by high-energy electron bombardment sources (EI) and the inadequacy of proton transfer chemical ionization sources (PTR) in detecting negative ion substances. Connected to the mass spectrometer through the base, compatible with traditional commercial mass spectrometry!

It can enable traditional mass spectrometry to have the ability to measure and analyze gaseous and particulate molecules online.

Technical Principle

➢ Thermal desorption+photo induced chemical ionization

Technical advantages: in-situ soft ionization+high sensitivity

➢ Non destructive online: online in-situ ionization of gaseous, liquid, and solid samples

➢ Simple and fast: no pre-treatment such as extraction, concentration, or pre separation

➢ Clean and authentic: No solvent or salt interference

➢ High sensitivity: nanogram level detection limit (sulfate 6.2 ng/m3, organic)

1.2 ng/m3 based on Q-Exactive

Application scenarios

➢ Electronic nose: sniffing and measuring VOCs, respiratory gases, odors, etc

Gaseous molecules and free radicals: flames, atmospheric photochemistry, etc

Solid and liquid: aerosols, drugs, cosmetics, food, chemicals, pesticide residues, etc