Gas chromatography technique is widely used in many industrial laboratories, research, environmental, forensics laboratories for separation, identification, qualitative and quantitative analysis of mixtures of analytes. Because its detection requires very small quantities of sample. GC requires compound to have to thermal stability, sufficient volatility or some analytes are in the vapor forms at 400 to 4500 C and they don’t decompose at this temperature. The analytes inject into the injector through the manual as well as autosampler syringe, samples, enter as a gas vapor, which transports into a column, for the carrying of sample gas used as a carrier gas., detector measure the response of each analyte.
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