16-Hr Laboratory Air Sample with radiello 145

	Peaks
1.	Propene
2.	2-Methyl-1-propene
3.	Acetaldehyde
4.	Acetone
5.	Hexane
6.	Butanal
7.	Acetic acid
8.	Toluene
9.	D-Limonene
10.	Benzaldehyde

Oven
Column	Rtx-VMS, 60 m, 0.25 mm ID, 1.40 µm (cat.# 19916)
	with MXT low-dead-volume connector (cat.# 20536)
Standard/Sample	Laboratory air sample
Injection	on-column
Oven Temp.:	40 °C (hold 7 min) to 250 °C at 30 °C/min (hold 2 min)
Carrier Gas	He, constant flow
Flow Rate:	2.0 mL/min

Detector

Mode:

Scan

Scan Program:

Group	Start Time (min)	Scan Range (amu)	Scan Rate (scans/sec)
2	8.80	38	226

Transfer Line Temp.:

250 °C

Analyzer Type:

Quadrupole

Source Type:

Extractor

Extractor Lens:

6 mm ID

Source Temp.:

230 °C

Quad Temp.:

150 °C

Electron Energy:

70 eV

Tune Type:

BFB

Ionization Mode:

Preconcentrator

Markes Unity

Trap 1 Settings

Type/Sorbent :

radiello 145

Desorb temp.:

350 °C

Desorb flow:

50 mL/min

Desorb time:

300 sec

Trap 2 Settings

Type/Sorbent:

Air Toxics

Cooling temp.:

30 °C

Desorb temp.:

310 °C

Desorb time:

3 sec

Instrument

Agilent 7890B GC & 5977A MSD

Sample Preparation

The radiello 145 passive air sampler (RAD145) utilizes a stainless steel net cartridge packed with 350 mg of graphitized charcoal (Carbograph 4). Airborne volatile organic compounds (VOCs) were adsorbed to the charcoal and then thermally desorbed and analyzed by GC-MS.

Trap 1 conditions were used for radiello desorption. Trap 2 conditions were used for Unity desorption.

Download PDF