chromatography
DESCRIPTION
learn it....TRANSCRIPT
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CHROMATOGRAPHY
Nur Eliya JasmiNur Amalina Mohd Noor
Nur Hamizah SalimNur Azirah Norzaini Tan
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What is CHROMATOGRAPHY ?
colour
to write
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WHAT IS CHROMATOGRAPHY ?
• A technique for separating mixtures into their components in order to analyze, identify, and
purify the mixture or components.
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DEFINITION
• Analyze : To examine the mixture or structure or something especially by separating it into its parts.
• Purify : To make something pure by removing substances that are not wanted out of another substances that contains it.
• Identify : To recognize something and to determine the identity of mixture.
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CHROMATOGRAM
• The visual output of the chromatograph. Different patterns on the chromatogram correspond to
different components of the separated mixture
• The visual output of the chromatograph. Different patterns on the chromatogram correspond to
different components of the separated mixture
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CHROMATOGRAM
x axis – Retention time
y axis – Solute concentration that leaving a chromatographic
column.
x axis – Retention time
y axis – Solute concentration that leaving a chromatographic
column.
Retention time :Time taken for the analyte to
pass through the system under set conditions.
Retention time :Time taken for the analyte to
pass through the system under set conditions.
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PHASE IN CHROMATOGRAPHY ?
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STATIONARY PHASE
ADSORBENT : atoms that accumulate on the surface of the material
ADSORBENT : atoms that accumulate on the surface of the material
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TYPE OF STATIONARY PHASE
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MOBILE PHASE
ELUENT : solvent that carry the
analyte in elution.
ELUENT : solvent that carry the
analyte in elution.
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MOBILE PHASE
SUPER CRITICAL FLUID: mobile phase is a fluid above
and close to its critical temperature and pressure.
SUPER CRITICAL FLUID: mobile phase is a fluid above
and close to its critical temperature and pressure.
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COMPARISON OF THE PHASE
MOBILE PHASE
GASGAS CROMATOGRAPHY
(GC)
LIQUIDLIQUID CHROMATOGRAPHY
(LC)
STATIONARY PHASE
LIQIUDGAS-LIQUID CHROMATOGRAPHY
(GLC)
SOLIDGAS-SOLID CHROMATOGRAPHY
(GSC)
LIQUIDLIQUID-LIQUID CHROMATOGRAPHY
(LLC)
SOLIDLIQUID-SOLID CHROMATOGRAPHY
(LSC)
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ANALOGY…
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RF VALUE
It is the distance travelled by the sample or analyte divided by distance travelled by the
solvent front in chromatography.
It is the distance travelled by the sample or analyte divided by distance travelled by the
solvent front in chromatography.
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EXAMPLE OF RF VALUE
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MECHANISME OF CHROMATOGRAPHY
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ADSORPTION
• Surface phenomenon where interaction takes place only on the surface of one substance.
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ABSORPTION <> ADSORPTION
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ABSORPTION <> ADSORPTION
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ELUTION
• The process of extracting a substance that is adsorbed to another by washing it with a
solvent. •
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ELUTION
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PARTITION
Saq <==> SorgSaq <==> Sorg
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PARTITION
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SUMMARIZE OF CHROMATOGRAPHY
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IF COLOURLESS ???
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ULTRAVIOLET DETECTOR
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ULTRAVIOLET DETECTOR MECHANISM
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THE END