1. Gas Chromatography Gas Chromatography Effendy De Lux Putra

2. Gas Chromatography A physical separation method It involves the distribution of component between two phases –Stationary phase: solid (10%) liquid (90%) –Mobile phase: gas

3. Why use GC ? Short analysis time Wide Choise of Stationary Phase Wide Choice of Detectors Ease of operation

4. Goals To separate mixtures of organic compounds To detect individual analytes To identify & quantitative using reference standards Preparative work

5. Block Diagram of a GC Block Diagram of a GC Block Diagram of a GC Injector InjectorColumnDetector Data Processor Qualitative Analysis Quantitative Analysis

6. Typical GC System A GC comprised of five main parts –Flow Controller –Injection Port –Column and Column Oven –Detector –Data processor

7. Mechanism of Zone Migration Chromatography separation is due to the differential migration rate of components in the mixtures The mobile phase helps to move the sample through the stationary phase