25 µg/L 8260 MegaMix Revised on Rtx-VMS

Peaks
1.Diethyl ether
2.1,1-Dichloroethene
3.Trichlorotrifluoroethane
4.Carbon disulfide
5.Iodomethane
6.Allyl chloride
7.Methylene chloride
8.trans-1,2-Dichloroethene
9.Acetonitrile
10.Chloroprene
11.1,1-Dichloroethane
12.Acrylonitrile
13.cis-1,2-Dichloroethene
14.2,2-Dichloropropane
15.Bromochloromethane
16.Chloroform
17.Carbon tetrachloride
18.Methyl acrylate
19.Tetrahydrofuran
20.Dibromofluoromethane (SS)
21.1,1,1-Trichloroethane
22.1,1-Dichloropropene
23.Benzene
24.Propionitrile
25.Methacrylonitrile
26.Pentafluorobenzene (IS)
27.1,2-Dichloroethane
28.Isobutyl alcohol*
29.Trichloroethene
30.1,4-Difluorobenzene (IS)
31.Dibromomethane
32.1,2-Dichloropropane
33.Bromodichloromethane
34.Methyl methacrylate
35.1,4-Dioxane*
36.2-Chloropropanol*
37.cis-1,3-Dichloropropene
38.Toluene-d8 (SS)
39.Toluene
40.2-Nitropropane
41.Tetrachloroethene
Peaks
42.trans-1,3-Dichloropropene
43.1,1,2-Trichloroethane
44.Ethyl methacrylate
45.Dibromochloromethane
46.1,3-Dichloropropane
47.1,2-Dibromoethane
48.Chlorobenzene-d5 (IS)
49.Chlorobenzene
50.Ethylbenzene
51.1,1,1,2-Tetrachloroethane
52.m-Xylene
53.p-Xylene
54.o-Xylene
55.Styrene
56.Bromoform
57.Isopropylbenzene
58.1-Bromo-4-fluorobenzene (BFB) (IS)
59.cis-1,4-Dichloro-2-butene
60.n-Propylbenzene
61.Bromobenzene
62.1,1,2,2-Tetrachloroethane
63.2-Chlorotoluene
64.1,3,5-Trimethylbenzene
65.1,2,3-Trichloropropane
66.trans-1,4-Dichloro-2-butene
67.4-Chlorotoluene
68.tert-Butylbenzene
69.1,2,4-Trimethylbenzene
70.sec-Butylbenzene
71.p-Isopropyltoluene
72.1,3-Dichlorobenzene
73.1,4-Dichlorobenzene-d4 (IS)
74.1,4-Dichlorobenzene
75.n-Butylbenzene
76.1,2-Dichlorobenzene
77.1,2-Dibromo-3-Chloropropane
78.Nitrobenzene
79.Hexachlorobutadiene
80.1,2,4-Trichlorobenzene
81.Naphthalene
82.1,2,3-Trichlorobenzene
*Note: these compounds were not detected at 25 ppb when the sample was analyzed via unheated purge.
image
GC_EV1352
ColumnRtx-VMS, 30 m, 0.25 mm ID, 1.40 µm (cat.# 19915)
Sample8260B MegaMix calibration mix, revised (cat.# 30152)
8260 Internal standard mix (cat.# 30074)
8260 Surrogate mix (cat.# 30073)
Diluent:Reverse-osmosis water
Conc.:25 µg/L (5 mL sample)
Injectionpurge and trap split
Liner:Premium 1 mm Split (cat.# 23333.1)
Purge and Trap
Instrument:EST Encon
Trap Type:Vocarb 3000
Purge: 11 min, flow 40 mL/min
Dry Purge: 3 min, flow 40 mL/min
Desorb Preheat Temp.:255 °C
Desorb: 1.0 min @ 260 °C, flow 30.9 mL/min
Bake: 6 min @ 260 °C
Interface Connection:injection port
Transfer Line Temp.:150 °C
Oven
Oven Temp.:45 °C (hold 4.5 min) to 100 °C at 12 °C/min to 240 °C at 25 °C/min (hold 1.32 min)
Carrier GasHe, constant flow
Flow Rate:0.9 mL/min
DetectorMS
Mode:Scan
Scan Program:
GroupStart Time
(min)
Scan Range
(amu)
Scan Rate
(scans/sec)
11.747-3005.4
22.935-3005.2
Transfer Line Temp.:230 °C
Analyzer Type:Quadrupole
Source Type:Inert
Drawout Plate:6mm ID
Source Temp.:230 °C
Quad Temp.:150 °C
Electron Energy:70 eV
Solvent Delay Time:1.5 min
InstrumentAgilent 7890A GC & 5975C MSD
NotesSome purge-and-trap instruments show increased activity of dehydrohalogenate pentachloroethane during analysis, forming tetrachloroethene (also known as perchloroethylene, PCE). Symptoms of this problem are poor matching of PCE levels between sources or a PCE single analyte test. This revised 8260 MegaMix standard is identical to the original, minus pentachloroethane, and was made for testing that does not required reporting of pentachloroethane.
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