How is Chemical Analysis Conducted in Epidemiological Studies?
1. Sample Collection: The first step involves collecting samples from the environment or biological specimens from individuals. 2. Sample Preparation: Samples are prepared using methods such as filtration, centrifugation, and digestion to isolate the chemical of interest. 3. Analytical Techniques: Various analytical techniques are applied to detect and quantify chemicals. Methods like gas chromatography (GC), high-performance liquid chromatography (HPLC), and atomic absorption spectroscopy (AAS) are commonly used. 4. Data Interpretation: The data obtained from chemical analysis are interpreted to understand the exposure levels and their potential health impacts.
