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Inter Departmental Value Added Course
Ascending TLC Chromatography
â€ĸ Adsorbent Layer-Stationary Phase
â€ĸ The eluent solvent-Mobile Phase
â€ĸ The process of elution is drawn up on the plate by Capillary action
â€ĸ different analytes ascend the TLC plate at different rates, separation is achieved.
Ascending and Descending chromatography technique is used for the separation of
Organic & Inorganic compounds
Descending TLC Chromatography
â€ĸ An analytical technique in which the mobile phase moves downward
through the stationary phase.
â€ĸ While in descending chromatography, the mobile phase move
downwards through the paper, and it moves faster due to the effect of
gravity.
Soxlet extraction
Principle
Soxhlet extraction is an exhaustive extraction technique widely
applied to analytes that are sufficiently thermally stable. The
extraction solvent is continuously cycled though the matrix, by
boiling and condensation, with the sample being collected in the
hot solvent.
Extraction Technique
Procedure for Soxlet extraction
Solvent extraction
â€ĸ Solvent extraction is based on the principle of liquid-liquid
extraction.
â€ĸ Solvent extraction is the process in which a compound
transfers from one solvent to another owing to the
difference in solubility or distribution coefficient between
these two immiscible (or slightly soluble) solvents.
Microwave Assisted Extraction
Microwave-assisted extraction (MAE) is a process of using microwave energy
to heat solvents in contact with a sample in order to partition analytes from
the sample matrix into the solvent. The ability to rapidly heat the sample
solvent mixture is inherent to MAE and the main advantage of this
technique.
TLC-V1.pptx
TLC-V1.pptx

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TLC-V1.pptx

  • 2. Ascending TLC Chromatography â€ĸ Adsorbent Layer-Stationary Phase â€ĸ The eluent solvent-Mobile Phase â€ĸ The process of elution is drawn up on the plate by Capillary action â€ĸ different analytes ascend the TLC plate at different rates, separation is achieved. Ascending and Descending chromatography technique is used for the separation of Organic & Inorganic compounds
  • 3. Descending TLC Chromatography â€ĸ An analytical technique in which the mobile phase moves downward through the stationary phase. â€ĸ While in descending chromatography, the mobile phase move downwards through the paper, and it moves faster due to the effect of gravity.
  • 4.
  • 5. Soxlet extraction Principle Soxhlet extraction is an exhaustive extraction technique widely applied to analytes that are sufficiently thermally stable. The extraction solvent is continuously cycled though the matrix, by boiling and condensation, with the sample being collected in the hot solvent. Extraction Technique
  • 6. Procedure for Soxlet extraction
  • 7. Solvent extraction â€ĸ Solvent extraction is based on the principle of liquid-liquid extraction. â€ĸ Solvent extraction is the process in which a compound transfers from one solvent to another owing to the difference in solubility or distribution coefficient between these two immiscible (or slightly soluble) solvents.
  • 8. Microwave Assisted Extraction Microwave-assisted extraction (MAE) is a process of using microwave energy to heat solvents in contact with a sample in order to partition analytes from the sample matrix into the solvent. The ability to rapidly heat the sample solvent mixture is inherent to MAE and the main advantage of this technique.