Gas Chromatography (GC) is a powerful analytical technique widely used to separate and analyze volatile organic compounds across a variety of sample types.

How It Works:
In GC, a vaporized sample is introduced into a column filled with a stationary phase. An inert carrier gas (like helium or nitrogen) propels the sample through the column. Compounds move at different rates depending on their chemical properties, allowing for effective separation and detection.

Common Applications of GC:

Monitoring organic contaminants in drinking water

Analyzing fuels and petroleum derivatives

Detecting pesticide residues in food products

Supporting pharmaceutical analysis and forensic investigations

⚙️ Core Components of a GC System:

Sample injection unit

Separation column (often coiled and housed in a temperature-controlled oven)

Detector (typically FID or TCD)

Temperature regulation system

Data acquisition system (generating chromatograms)

Why Use GC?
Gas Chromatography delivers excellent sensitivity and precision, making it indispensable for research, environmental analysis, and quality assurance. Effective use requires careful sample prep, method optimization, and data interpretation.

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