68
GCCOLUMNS |
APPLICATION-SPECIFICCOLUMNS
Chiral Compounds
free
literature
GrapeFlavor
Analysis,Usingan
Rt®-
γ
DEXsaGC
Column
lit. cat.#59553
GCAnalysisofChiral
FlavorCompounds in
AppleJuices,Using
Rt®-
β
DEXsmand
Rt®-
β
DEXseColumns
lit. cat.#59546
Downloadyour free
copies from
free
literature
AGuide to the
AnalysisofChiral
CompoundsbyGC
Downloadyour free
copy from
lit. cat.#59889
please
note
Application-specificchiral columnkitsare
available! See
EnantiomersAnalysis
Chiral selectivity improvessignificantlyby
realizing lowerelution temperatures.
This canbeachievedby:
• Faster linear velocities (80cm/sec.)with
hydrogencarriergas.
• Slower temperature ramp rates (1–2 °C/min.).
• Appropriateminimumoperating
temperature (40or 60 °C).
• On-columnconcentrationsof 50ngor less.
tech
tip
Rt®-
β
DEXmColumns
(fusedsilica)
(permethylatedbetacyclodextrindoped into14%cyanopropylphenyl/86%dimethyl polysiloxane)
Uses: General purpose chiral phasewithmany published applications.
CyclodextrinColumns forAnalyzingManyChiralCompounds
By adding
β
or
γ
cyclodextrin to our bonded Rtx®-1701 stationary phase, we greatly
enhance overall utility and column lifetime for our chiral columns, compared to
columns that have pure cyclodextrin stationary phases. Separations of more than one
hundred chiral compounds have been achieved using our unique DEX columns, and
our columns continue todemonstrate stability after hundreds of temperatureprogram
cycles.
Rt®-
β
DEXsmColumns
(fusedsilica)
(2,3-di-O-methyl-6-O-
tert
-butyl dimethylsilyl beta cyclodextrindoped into14%
cyanopropylphenyl/86%dimethyl polysiloxane)
Uses: Excellent column formost chiral compounds in essential oils.
Rt®-
β
DEXseColumns
(fusedsilica)
(2,3-di-O-ethyl-6-O-
tert
-butyl dimethylsilyl beta cyclodextrindoped into14%
cyanopropylphenyl/86%dimethyl polysiloxane)
Uses: Similar in performance to Rt-
β
DEXsm but provides better resolution for limonene, linalool, linalyl
acetate, ethyl-2-methylbutyrate, 2,3-butane diol, and styrene oxides.
Rt®-
β
DEXspColumns
(fusedsilica)
(2,3-di-O-propyl-6-O-
tert
-butyl dimethylsilyl beta cyclodextrindoped into14%
cyanopropylphenyl/86%dimethyl polysiloxane)
Uses: Often useful in dual-column configurations, with the Rt-
β
DEXsm column, for complex enantiomeric
separations.
Rt®-
β
DEXsaColumns
(fusedsilica)
(2,3-di-acetoxy-6-O-
tert
-butyl dimethylsilyl beta cyclodextrindoped into14%
cyanopropylphenyl/86%dimethyl polysiloxane)
Uses: Unique selectivity for esters, lactones, and other fruit flavor components.
Rt®-
β
DEXcstColumns
(fusedsilica)
(Proprietarycyclodextrinmaterial doped into14%cyanopropylphenyl/86%dimethyl polysiloxane)
Uses: Proprietary stationary phase, developed specifically for the fragrance industry. Also used for
pharmaceutical applications.
Rt®-
γ
DEXsaColumns
(fusedsilica)
(2,3-di-acetoxy-6-O-
tert
-butyl dimethylsilyl gamma cyclodextrindoped into14%
cyanopropylphenyl/86%dimethyl polysiloxane)
Uses: Larger organicmolecules. Also useful for flavor compounds in fruit juices.
ID
df
temp. limits
30-Meter
0.25mm 0.25µm
40 to 230°C
13100
0.32mm
0.25µm
40 to 230°C
13101
ID
df
temp. limits
30-Meter
0.25mm 0.25µm
40 to 230°C
13105
0.32mm
0.25µm
40 to 230°C
13104
ID
df
temp. limits
30-Meter
0.25mm 0.25µm
40 to 230°C
13107
0.32mm
0.25µm
40 to 230°C
13106
ID
df
temp. limits
30-Meter
0.25mm 0.25µm
40 to 230°C
13111
0.32mm
0.25µm
40 to 230°C
13110
ID
df
temp. limits
30-Meter
0.25mm 0.25µm
40 to 230°C
13109
0.32mm
0.25µm
40 to 230°C
13108
ID
df
temp. limits
30-Meter
0.25mm 0.25µm
40 to 230°C
13103
0.32mm
0.25µm
40 to 230°C
13102
ID
df
temp. limits
30-Meter
0.25mm 0.25µm
40 to 230°C
13113
0.32mm
0.25µm
40 to 230°C
13112
Website :
E-mail :
TelNo : 03 9762 2034 . . . inAUSTRALIA
Mar 2011
