GC Sample Preparation Guide | Massachusetts Institute of Technology - Edubirdie

University:
Massachusetts Institute of Technology
Course:
5.301 | Chemistry Laboratory Techniques
Academic year:

2023
Views:

182

Pages:

1
Author:

Caiden Mullen

8.2 - GC Sample Preparation Guide Overview: This handout describes how to prepare a standard gas chromatograph sample. It involves preparing a dilute solution of a somewhat volatile compound and using the GC to assess its purity. Reference: Zubrick Ch 32 and Mohrig Ch 19 Liquid Sample Preparation: 1) Insert the tip of a Pasteur pipet into the liquid. Capillary action will draw approximately 10 mg of the liquid into the pipet. 2) Rinse this into a vial using 1 mL of a volatile solvent - pentane, dichloromethane, ether, etc. 3) Insert the tip of a pipet into this liquid. 4) Rinse this into another vial using 1 mL of the same solvent. 5) Your sample is ready to be injected! Solid Sample Preparation: 1) Dissolve approximately 10 mg of the compound in 1 mL of one of the volatile solvents listed above. 2) See steps 3–5 above

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