Ver.1.36
STEP3 Prepare the sample
(1) Place 5 µL of the sample in an Eco cup SF and evaporate the solvent.
(2) Attach a stick (Eco stick SF) to the sample cup and fix the assembly to the sampler.
Position the slider of the sampler in the down position. Attach the sampler to the pyrolyzer
and wait for 1 min. (Fig. 5.2B) so that the residual air can be purged.
STEP4 Click the “START” button when the temperatures and pressures are stabilized.
When the “Ready for injection” dialog box is displayed, press the sample drop button located at
the top of the sampler. This releases the cup and it drops into the furnace (Fig. 5.2B).
Immediately click the “Start” button. GC analysis will start.
The pyrogram in Fig. 5.3 has peaks for the polystyrene pyrolyzates: monomer, dimmer, trimer, and
methyl stearate (Fig. 5.3).
Fig. 5.3 Pyrogram of polystyrene obtained by Single-Shot analysis
Single-Shot analysis
Pyrolysis temp.: 550°C
ITF temp.: 300°C
Injection port temp.: 300°C
Oven temp.: 70°C - 20°C/min - 320°C (1 min hold)
Column: Ultra ALLOY-5, 30m (0.25φ), 0.25 μm
He: 1 mL/min, split ratio: 1/50
Sample: Polystyrene solution: 5 µl (25 µg)
MS scan range: 50-350
MS scan speed: 3 scans/second or greater
A) Attach sampler with sample cup
to the pyrolyzer
B) Press the sample drop button on the
sampler. This drops the sample cup.
Fig. 5.2 Sample introduction procedure in Single-Shot analysis
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