Volatile Organics US EPA Method 8260B on Rtx-VMS

	Peaks
1.	Carbon dioxide
2.	Dichlorodifluoromethane
3.	Freon^® 114
4.	Chloromethane
5.	Vinyl chloride
6.	Bromomethane
7.	Chloroethane
8.	Trichlorofluoromethane
9.	Ethanol
10.	Diethyl ether
11.	1,1-Dichloroethene
12.	Iodomethane
13.	Carbon disulfide
14.	Freon^® 113
15.	Acrolein
16.	Allyl chloride
17.	Methylene Chloride
18.	Acetone
19.	trans-1,2-Dichloroethene
20.	Methyl acetate
21.	Methyl tert-butyl ether
22.	tert-Butyl Alcohol
23.	Acetonitrile
24.	Diisopropyl ether
25.	Chloroprene
26.	1,1-Dichloroethane
27.	Acrylonitrile
28.	vinyl acetate**
29.	Ethyl- tert-butyl ether**
30.	cis-1,2-Dichloroethene
31.	2,2-Dichloropropane
32.	Bromochloromethane
33.	Chloroform
34.	Carbon Tetrachloride
35.	Ethyl Acetate
36.	Methyl acrylate

	Peaks
37.	Dibromofluoromethane
38.	Tetrahydrofuran
39.	1,1,1-Trichloroethane
40.	2-Butanone
41.	1,1-Dichloropropene
42.	Benzene
43.	Propionitrile
44.	Methacrylonitrile
45.	Pentafluorobenzene
46.	tert-Amyl Methyl ether
47.	1,2-Dichloroethane
48.	Isobutyl alcohol
49.	Isopropyl acetate
50.	Trichloroethene
51.	1,4-Difluorobenzene
52.	Dibromomethane
53.	1,2-Dichloropropane
54.	Bromodichloromethane
55.	Methyl methacrylate
56.	n-Propyl acetate
57.	2-Chloroethyl vinyl ether
58.	cis-1,3-Dichloropropene
59.	Toluene-D8
60.	Toluene
61.	2-Nitropropane
62.	Tetrachloroethene
63.	4-Methyl-2-pentanone
64.	trans-1,3-Dichloropropene
65.	2-Bromo-1-chloropropane
66.	1,1,2-Trichloroethane
67.	Ethyl methacrylate
68.	Dibromochloromethane
69.	1,3-Dichloropropane
70.	1,2-Dibromoethane
71.	n-Butyl acetate
72.	2-Hexanone

	Peaks
73.	Chlorobenzene-d5
74.	Chlorobenzene
75.	Ethylbenzene
76.	1,1,1,2-Tetrachloroethane
77.	m-Xylene
78.	p-Xylene
79.	o-Xylene
80.	Styrene
81.	Bromoform
82.	Isopropylbenzene
83.	n-Amyl acetate
84.	4-bromo-1-fluorobenzene (ss)
85.	cis-1,4-dichloro-2-butene
86.	n-Propylbenzene
87.	Bromobenzene
88.	1,4-Dichlorobutane
89.	1,1,2,2-Tetrachloroethane
90.	2-Chlorotoluene
91.	1,3,5-Trimethylbenzene
92.	1,2,3-Trichloropropane
93.	trans-1,4-Dichloro-2-butene
94.	4-Chlorotoluene
95.	tert-Butylbenzene
96.	Pentachloroethane
97.	1,2,4-Trimethylbenzene
98.	sec-Butylbenzene
99.	p-Isopropyltoluene
100.	1,3-Dichlorobenzene
101.	1,4-Dichlorobenzene-D4
102.	1,4-Dichlorobenzene
103.	n-Butylbenzene
104.	1,2-Dichlorobenzene
105.	1,2-Dibromo-3-Chloropropane
106.	Nitrobenzene
107.	Hexachlorobutadiene
108.	1,2,4-Trichlorobenzene
109.	Naphthalene
110.	1,2,3-Trichlorobenzene

*2-Chloroethanol in 8260B mix requires lower scan range for identification; 1,4-dioxane requires fortification or identification using single point high calibration standard. **Peaks 28 & 29 share ion (43).

Oven
Column	Rtx-VMS, 40 m, 0.18 mm ID, 1.00 µm (cat.# 49915)
Standard/Sample	8260B MegaMix Calibration Mix Kit (cat.# 30475)
	502.2 Calibration Mix #1 (gases) (cat.# 30042)
	VOA Calibration Mix #1 (ketones) (cat.# 30006)
	8260 Internal Standard Mix (cat.# 30074)
	8260 Surrogate Mix (cat.# 30073)
	8260B Acetate Mix (Revised) (cat.# 30489)
	California Oxygenates Mix (cat.# 30465)
	acrolein (cat.# 30478)
	ethanol (cat.# 30466)
	1,2-dichlorotetrafluoroethane (CFC-114) (cat.# 30476)
Diluent:	25 mL RO water
Conc.:	5ppb each
Injection	purge and trap split (split ratio 40:1)
Liner:	1mm Split (cat.# 20972)
Inj. Temp.:	250 °C
Purge and Trap
Instrument:	Tekmar LSC3100 Purge and Trap
Trap Type:	Vocarb 3000
Purge:	11 min, flow 40 mL/min
Dry Purge:	1 min, flow 40 mL/min
Desorb Preheat Temp.:	245 °C
Desorb:	2 min @ 250 °C, flow 45 mL/min
Bake:	8 min @ 260 °C
Interface Connection:	injection port
Transfer Line Tubing:	Silcosteel transfer line
Oven Temp.:	35 °C (hold 2 min) to 60 °C at 4 °C/min to 225 °C at 40 °C/min (hold 5 min)
Carrier Gas	He, constant flow
Flow Rate:	1.1 mL/min

Detector	5973 GC/MS w/ turbomolecular pump
Source Temp.:	280 °C
Ionization Mode:	EI
Scan Range:	35-260 amu
Notes	MCS by-passed with Silcosteel tubing, cat.# 21035

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