Page 24 - Calidus Nov2012 Update : PublicFiles

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Application Note:
CALIDUS™ 101 HT microGC
Ultra Fast ASTM D2887
SimDist Application
November 2012
SimDist GC analysis for liquid fuels
and fuel component characterization
by boiling range distribution including
gasoline range organics up through
gas oil and even crude oil, i.e.
analysis for hydrocarbons to C50 – in
less than five minutes. Application Overview (Reference Figure 1)
The Sample Processing Module with a standard split/splitless
injection port, incorporating either a syringe through septum injection,
Auto Sampler, or automated liquid sample valve delivers the sample
to a Programmed Temperature Column Module (PTCM). The inlet
includes septum purge to prevent bleed components from entering
the system.
Figure 1: CALIDUS Model 101 – HT Functional Diagram .
The PTCM is controlled by the method. It contains a MXT-1 High
Temperature Resistively Heated Stainless Steel Capillary Column
and is operated in a temperature programmed mode. The column
provides the separation of the hydrocarbons in the liquid fuel sample.
(See Figures 2 & 3)
Figure 2: Chromatogram of the Reference Gas
Oil Obtained with Ultrafast Chromatograph.
Figure 3: Blank, RT Standard & Gas Oil Overlaid.
Run Time 84 Seconds.