Thin Layer Chromatography

Which parameter below is used for analyte identification in TLC?

• retention volume

• retention time

• retardation factor

• eluent distance

The following can be done to solve issues with tailing spot, EXCEPT....

• reducing sample loading

• heating silica plate before use

• spraying with a suitable reagent

• adding a modifier to the mobile phase

The following parameter can tell how well two adjacent peaks are separated

• Efficiency

• Capacity

• Resolution

• Selectivity

The advantage of LiChrosphere (spherical silica particles) over amorphous silica is.......

• Cheaper price

• Smaller size distribution

• Bigger particles

• Smaller particles

Which of the following system has the thickest layer of stationary phase?

• Ultra TLC

• HP TLC

• Preparative TLC

• TLC-MS

The advantage of centrifugal TLC over preparative TLC is .......

• Simpler collection of target compound

• Adjustable thickness of silica

• No need for a pumping system

• No need for a rotor

The advantage of TLC-MS is .................

• Can detect a wide range of analytes

• The instrument is sophisticated

• The cost of instrument is high

• The operation is simple