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Pesticides on Ultra Aqueous C18

PeakstR (min)Transition 1Transition 2
1.Methamidophos1.06142 -> 94142 -> 125
2. Acephate1.27184.1 -> 143184.1 -> 125
3.Omethoate1.69214 -> 124.9214 -> 182.8
4.Propamocarb6.61189.2 -> 102.2189.2 -> 73.9
ColumnUltra Aqueous C18 (cat.# 9178312)
Dimensions:100 mm x 2.1 mm ID
Particle Size:3 µm
Pore Size:100 Å
Temp.:35 °C
Samplemulticomponent pesticide standard
Conc.:1 ppb each pesticide
Inj. Vol.:10 µL
Mobile Phase
A:10 mM NH4OAc in water
B:10 mM NH4OAc in methanol
Time (min)%B
Flow:0.5 mL/min
DetectorApplied Biosystems/MDS Sciex LC/MS/MS
Model #:4000 QTRAP
Ion Source:TurboIonSpray®
Ion Mode:ESI+
Ion Spray Voltage:5 kV
Gas 1:50 psi (344.7 kPa)
Gas 2:60 psi (413.7 kPa)
Source Temp.:600 °C
InstrumentShimadzu UFLCXR