Method

SPME and syringe (Supelco bulletin 922)

EPA 8270

EPA 8275

Sorption tube (EPA TO-15 and TO-17)

Samples

LDPE

Type of sorption tube

None

Tenax AG

Volume of injection

N/A

1.00 µL

N/A

Type of SPME Fiber

100 μm polydimethylsiloxane

None

None

Type of syringe

None

(GASTIGHT) 500 µL

None

Solvents

None

deionised water, toluene and acetonitrile

None

Analytical instrument

GC-MS

Py-GC-MS

Instrument type

Thermo Scientific Trace 1300

PE Autosystem GC with built-in Autosampler

Column

Thermo TG-SQC30 meter, 0.25 mm ID, 0.25 µm df

Mass range

41 - 650 amu

35 - 650 amu

41 - 650 amu

Scan time

0.59 sec/scan

0.94 sec/scan

0.95 sec/scan

0.59 sec/scan

Carrier

He 1mL/min.

Detector

MS

FID

Injection method

Manual

Autosampler

Injector

Splitless (closed 3 min.)

Split

Programmable split/splitless injector (PSSI)

Initial Setpoint

220˚C

280˚C

Oven temperature

35˚C (2 min.)/10.0˚∙ min−1/220˚C (2 min.)/30.0˚∙ min−1/300.0˚C (5 min.)

40˚C (4 min.)/10.0˚∙min−1/270˚C (2 min.)

40˚C (4 min.)/10.0˚∙min−1/320˚C (2 min.)

50˚C (2 min.)/10.0˚∙min−1/230˚C (10 min.)

Total run time

25.00 min.

29.00 min.

34.00 min.

30.00 min.