The definition of detector response depends on whether it is mass-sensitive or concentration-sensitive. For mass-sensitive detectors, the response R (mV/mass/unit time) is given by the following relationship:
For the concentration sensitive detector, sensitivity is given in units of mV/mass/unit volume and it can be calculated using the following formula:
In addition to factors such as the nature of the mobile phase, cell geometry, and so
on, the detector response is also a function of the type of solute.