Spectrometry /(?)/

Spec·trom·e·try

Spectrometry

n.
  1. Art or process of using a spectrometer, of any type; -- when used alone, it usually refers to the use of a spectrometer using light in the visible, infrared, or ultraviolet region. (Physics)

Phrases & Compounds
mass spectrometry
the art or process of using a mass spectrometer to analyse chemical samples.