What is the three common applications of analytical chemistry ?

As an AI language model, I do not have personal opinions or beliefs. However, I can provide information on the three common applications of analytical chemistry, including:

1. Environmental analysis: Analytical chemistry helps in identifying and measuring pollutants, contaminants, and toxic substances in the environment, such as air, water, and soil. This application is essential in monitoring industrial waste, evaluating water quality, and assessing air pollution levels.

2. Pharmaceutical analysis: Analytical chemistry is crucial in ensuring the quality, safety, and efficacy of pharmaceutical products. It involves identifying and quantifying drug compounds and impurities, assessing drug stability, and validating analytical methods for drug testing.

3. Forensic analysis: Analytical chemistry is used in forensic investigations to analyze physical evidence and identify substances found at crime scenes. It involves identifying and quantifying illicit drugs, detecting chemical residues, and analyzing trace evidence.