Institut de Chimie Moléculaire et des Matériaux d'Orsay

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Model

 

Bruker MicroTOF-Q (2009)

Ion Source

ESI (Electrospray) ou APCI (Atmospheric Pressure Chemical Ionization)

Mass analyzer 

tandem - Quadrupole coupled with a time of flight (Tof)

Mass range

illimited in theory

Information

You can see the pseudo molecular ions MH+ and MNa+ (and MK +). The measurement accuracy (less than 5 ppm) and high resolution (R = 15000) provide access to raw formulas. In MS/MS mode, you can obtain structural information.

Principle

In ESI, an electric field charge droplets (solvent + solute) going out of the capillary. The solvent is evaporated by a collision with an inert gas. The droplets are split up to lead completely to ion desolvation and possibly multicharged. In APCI, the molecules are ionized from corona electrode discharge.

Options

Introduction of the sample by liquid chromatography + automatic sample exchanger (Dionex U3000) or direct injection.