Which experimental feature of the maldi-ms technique allows the separation of ions formed after the adduction of tissue molecules

The field-free drift path  

Explanation:

In MALDI-TOF, the sample is embedded in a matrix. A laser vaporizes the molecules in the sample with little fragmentation. The gaseous molecules are ionized, accelerated, and sent through a field-free drift path to the detector.

The proteins in the sample have different velocities based on their mass-to-charge ratio.

The fastest ions are those with the smallest m/z ratio.

The field-free drift path increases the separation between the ions, so the smallest ions reach the detector first.

Thus, the ions are separated based on their time of flight through the drift tube.

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation: