Microbial VOCs on Rxi-1ms

GC_AR01030

	Peaks	t_R (min)
1.	2-Butanone	9.047
2.	2-Methylfuran	9.640
3.	3-Methylfuran	9.962
4.	2-Methyl-1-propanol	10.405
5.	2-Methyl-2-butanol	10.791
6.	1-Butanol	11.506
7.	3-Methyl-2-butanol	12.092
8.	2-Pentanol	12.592
9.	2-Methyl-1-butanol	13.779
10.	Dimethyl disulfide	13.979
11.	3-Hexanone	14.994

	Peaks	t_R (min)
12.	2-Hexanone	15.080
13.	2-Heptanone	17.767
14.	1-Octen-3-ol	20.019
15.	3-Octanone	20.133
16.	3-Octanol	20.433
17.	2-Pentylfuran	20.476
18.	2-Ethyl-1-hexanol	21.163
19.	1-Octanol	22.013
20.	2-Isopropyl-3-methoxypyrazine	22.628
21.	Isoborneol	24.379
22.	α-Terpineol	24.844
23.	Geosmin	28.347

Injection
Column	Rxi-1ms, 60 m, 0.25 mm ID, 1.00 µm (cat.# 13356)
Standard/Sample	microbial volatile organic compounds
Conc.:	2 ppbv, 60% RH
Inj. Vol.:	1.0 µL split (split ratio 1:1)
Liner:	1mm Split (cat.# 20972)
Inj. Temp.:	200 °C
Oven
Oven Temp.:	10 °C (hold 1 min) to 235 °C at 8 °C/min
Carrier Gas	He, constant flow
Flow Rate:	1.5 mL/min

Detector	Agilent 5973 GC/MS
Transfer Line Temp.:	260 °C
Solvent Delay Time:	5 min
Ionization Mode:	EI
Scan Range:	35-350 amu
Preconcentrator	Nutech 8900DS Preconcentrator
Trap 1 Settings
Cooling temp:	-160 °C
Desorb temp:	20 °C
Trap 2 Settings
Cooling temp:	20 °C
Desorb temp:	200 °C
Cryofocuser
Cooling temp:	200 °C
Desorb temp:	200 °C
Standard
Size:	200 mL
Instrument	Agilent/HP6890 GC
Notes	Sample = 200 mL from canister

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