EPA Method 525.3 UCMR4 Standard on Rxi-5Sil MS at Method Reporting Limit (SIM Analysis)

PeakstR (min)Conc.
(µg/mL)
1.1,3-Dimethyl-2-nitrobenzene (SS)7.431.0
2.Acenaphthene-d10 (IS)11.541.0
3.Ethoprop13.290.030
4.α-Hexachlorocyclohexane (α-HCH)14.060.010
5.Dimethipin14.540.20
6.Pentachlorophenol-13C6 (IS)14.652.0
7.Phenanthrene-d10 (IS)15.051.0
8.Chlorpyrifos17.090.030
9.Profenofos19.340.30
10.Tribufos19.490.070
11.Oxyfluorfen19.570.050
12.Tebuconazole21.700.20
13.Triphenyl phosphate (SS)21.801.0
14.Chrysene-d12 (IS)22.631.0
15.cis-Permethrin24.980.017
16.trans-Permethrin25.160.023
17.Benzo[a]pyrene-d12 (SS)26.681.0
image
GC_EV1462
ColumnRxi-5Sil MS, 30 m, 0.25 mm ID, 0.25 µm (cat.# 13623)
SampleEPA Method 525.3 PAH IS mix (cat.# 32547)
Pentachlorophenol-13C6 (cat.# 32548)
EPA Method 525.3 surrogate standard (cat.# 32549)
Method 525.3 UCMR4 standard (cat.# 572261)
Diluent:Ethyl acetate
Injection
Inj. Vol.:1 µL pulsed splitless (hold 1.0 min)
Liner:Topaz 4 mm single taper w/wool (cat.# 23303)
Inj. Temp.:275 °C
Pulse Pressure:30 psi (206.8kPa)
Pulse Time:1.05 min
Purge Flow:60 mL/min
Oven
Oven Temp.:70 °C (hold 1.5 min) to 200 °C at 10 °C/min to 320 °C at 7 °C/min (hold 3 min)
Carrier GasHe, constant flow
Flow Rate:1.2 mL/min
DetectorMS
Mode:SIM
SIM Program:
GroupStart Time
(min)
Ion(s) (m/z)Dwell (ms)
11.54677, 134 25
29.501162, 164 25
312.42397, 126, 139, 158 25
413.666109, 181, 183, 219 25
514.28853, 54, 274, 276 25
614.856160, 188 25
716.08797, 197, 199 25
818.20557, 63, 97, 139, 169, 208, 252, 339, 361 25
920.65277, 83, 125, 169, 250, 326 25
1022.212236, 240 25
1123.813163, 183 25
1225.886132, 164 25
Transfer Line Temp.:280 °C
Analyzer Type:Quadrupole
Source Type:Stainless Steel
Drawout Plate:6 mm ID
Source Temp.:280 °C
Quad Temp.:180 °C
Solvent Delay Time:1.45 min
Tune Type:DFTPP
Ionization Mode:EI
InstrumentHP6890 GC & 5973 MSD
NotesThe EPA Method 525.3 UCMR4 standard analyte concentrations vary to simplify preparing ICAL levels based on the minimum method reporting levels.
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