Analytical chemistry is a branch of chemistry that focuses on the qualitative and quantitative analysis of substances. This field involves identifying, isolating, and quantifying the components of a sample, as well as developing methods for measuring the concentrations of different substances in various materials. Analytical chemists use a variety of techniques such as chromatography, spectroscopy, and electrochemistry to analyze samples and provide accurate and reliable results. This field is essential in fields such as environmental monitoring, drug testing, food safety, and forensic science.