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Nitrosamines in Drinking Water on Rxi-624Sil MS by Modified EPA Method 521 Utilizing CSR-LVSI

ColumnRxi-624Sil MS, 30 m, 0.25 mm ID, 1.40 µm (cat.# 13868)
using Rxi guard column 5 m, 0.25 mm ID (cat.# 10029)
with universal Press-Tight connectors (cat.# 20429)
Standard/SampleN-Nitrosodimethylamine-d6 (cat.# 33910)
N-Nitrosodi-n-propylamine-d14 (cat.# 33911)
Nitrosamine calibration mix, method 521 (cat.# 31898)
Diluent:Dichloromethane
Conc.:10 ng/mL
Injection
Inj. Vol.:10 µL splitless (hold 1 min)
Liner:Premium 4 mm single taper w/wool (cat.# 23303.5)
Inj. Temp.:250 °C
Purge Flow:80 mL/min
Oven
Oven Temp.:38 °C (hold 1 min) to 160 °C at 12 °C/min to 200 °C at 5 °C/min (hold 1 min)
Carrier GasHe, constant flow
Flow Rate:1.4 mL/min
DetectorAgilent 5975C
SIM Program:
GroupStart Time
(min)
Ion(s) (m/z)Dwell (ms)
16.980, 74, 46, 43, 42 23
27.988, 56, 43, 42 30
38.9102, 56, 44, 42 30
410130, 78, 70, 58, 46, 43, 42 15
512.05100, 68, 42, 41 30
614.5158, 116, 84, 57, 41 23
Transfer Line Temp.:280 °C
Analyzer Type:Quadrupole
Source Temp.:230 °C
Quad Temp.:150 °C
Solvent Delay Time:6.9 min
Tune Type:BFB
Ionization Mode:EI
InstrumentAgilent 7890A GC & 5975C MSD