Analytical equipment

VOC in e-liquids

Clarus^Ò SQ 8 Gas Chromatograph/Mass Spectrometer (Perkin Elmer Inc.)

VOC in aerosol

Clarus^Ò SQ 8 Gas Chromatograph/Mass Spectrometer (Perkin Elmer Inc.)

Column (liquid sample)

Elite-VMS (30 m, 0.25 mm ID, 1.4 µm) (Perkin Elmer Inc.)

Column (aerosol sample)

Elite-VRX (30 m, 0.25 mm ID, 1.4 µm) (Perkin Elmer Inc.)

Injection mode

Split 10:1

Injection temperature

Injection volume

250˚C

1.0 µL

Carrier gas

Helium (purity 99.999%), constant flow

Flow rate

2.0 mL/min

Oven

35˚C was held for 1 minute then ramped at rate of 11˚C/minute to 190˚C, and then ramped at rate 15˚C/minute of which was further held for 3 minutes

Source temperature

220˚C

Interface temperature

Run time

250˚C

20 min

Acquisition mode

Scan range

Full scan mode

m/z 15 - 400, library search against the NIST 11 mass spectral database

Data processing

Turbo Mass Software version 6.1.0