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Extraction of Gasoline from Soil Samples Using Supercritical Fluid Extraction and GC-MS

Extraction of Gasoline from Soil Samples Using Supercritical Fluid Extraction and GC-MS. By: Tim Abell and Zach Bensley. Purpose. To create a method to extract gasoline from soil samples. . Importance. Test contamination of soil after an oil spill.

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Extraction of Gasoline from Soil Samples Using Supercritical Fluid Extraction and GC-MS

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  1. Extraction of Gasoline from Soil Samples Using Supercritical Fluid Extraction and GC-MS By: Tim Abelland Zach Bensley

  2. Purpose • To create a method to extract gasoline from soil samples.

  3. Importance • Test contamination of soil after an oil spill. • To see if clean up from an oil spill was successful.

  4. Procedure • Sample Preparation (SFE): • Approximately 1.00 g of celite spiked with 0.50 mL of gasoline. • 3 samples were prepared. • Placed spiked sample in SFE column. • 50 mL of chloroform in beaker in an ice bath to capture the extracted gasoline. • Extracted each sample for 30 minutes.

  5. Procedure • Sample Preparation (GC-MS): • Created Standard with 0.50 mL of gasoline and 100 mL chloroform. • Each sample mixture was diluted to 100 mL with chloroform. • Ran standard and 3 sample on GC-MS.

  6. Data • Standard

  7. Data • Celite Trial 1

  8. Data • Celite Trial 2

  9. Data • Celite Trial 3

  10. Procedure • Sample Preparation (SFE): • Obtained soil from outside. • Approximately 5.00 g of soil with 0.50 mL gasoline. • 3 samples were prepared. • Placed spiked soil samples in SFE column. • Placed 50.0 mL chloroform in a beaker in an ice bath. • Ran each sample for 30 minutes.

  11. Procedure • Sample Preparation (GC-MS): • Created Standard with 0.50 mL of gasoline and 100 mL chloroform. • Each sample mixture was diluted to 100 mL with chloroform. • Ran standard and 3 sample on GC-MS.

  12. Data • Soil Sample Trial 1

  13. Data • Soil Sample Trial 2

  14. Data • Soil Sample Trial 3

  15. Error • Making soil sample more fine. • Longer run time on SFE for soil samples. • Gasoline and chloroform mixture sat for 6 days.

  16. Conclusion • Gasoline can be extracted using SFE and condensed in chloroform. • More work with the method of extraction with soil samples.

  17. Future Work • Test with different solvents. • Extract non-spiked soil samples.

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