Analyte

Definition

An analyte is a substance or chemical constituent that is being measured and analyzed in a laboratory sample. It is the target of quantitative chemical analysis to determine its concentration within a mixture.

5 Must Know Facts For Your Next Test

1. The analyte's concentration can be determined using various methods such as titration, spectrophotometry, or chromatography.
2. In a chemical reaction, the analyte is often the reactant whose quantity is of interest.
3. Accuracy in measuring the analyte's concentration is critical for stoichiometric calculations in reactions.
4. Different analytical techniques may require different preparation methods for the sample containing the analyte.
5. Calibration curves are often used to relate instrument response to analyte concentration.

Review Questions

• What role does an analyte play in quantitative chemical analysis?
• Name two methods commonly used to determine the concentration of an analyte.
• Why is it important to accurately measure the concentration of an analyte in stoichiometric calculations?

Related terms

Titration:

A technique where a solution of known concentration (titrant) is used to determine the concentration of an unknown solution (analyte).

Spectrophotometry:

An analytical method used to measure how much light a chemical substance absorbs by measuring the intensity of light as a beam passes through sample solution.

Chromatography:

A laboratory technique for separating mixtures into their individual components based on their movement through a stationary phase under the influence of a mobile phase.