Body: Scholars who research "Analytical chemistry" look at instruments and methods used to separate, identify, and quantify matter.
A few scholars of "Analytical chemistry" include Ronald Martin, Jocelyn McKeon, Willard W. Harrison.
Some motivations are describe separation, identification or quantification may constitute the entire analysis or be combined with another method.
Instrumental methods, Classical methods, Signals and noise are a few categories of "Analytical chemistry".