Quantitative analysis refers to the determination of the composition of a sample substance. Quantitative analysis identifies the properties of a compound or mixture based on the absolute or relative abundance of its constituent components.
An example of quantitative analysis is determining how much hydrogen and oxygen is present in water. Another example is determining the relative concentration of a substance, such as a 70 percent concentration of isopropyl alcohol to water. Techniques for conducting quantitative analysis include gravimetric analysis, titration and mass spectrometry.
Quantitative analysis is one of the two components involved in chemical analysis; qualitative analysis is the other component. Quantitative analysis determines how much of a constituting substance is present, while qualitative analysis determines what those constituting substances are.