Pesticides on Pinnacle DB Aqueous C18

	Peaks	t_R (min)	Polarity	Mol. Wt.	Transition 1
1.	Bentazone	0.77	negative	240.28	239.0→131.8
2.	Bromoxynil	1.32	negative	276.91	275.9→80.8
3.	Ioxynil	2.46	negative	370.92	369.8→126.7
4.	Fludioxonil	5.34	negative	248.19	247.0→179.9
5.	Boscalid	5.36	negative	343.21	343.0→307.0
6.	Prothioconazole	5.41	negative	344.26	341.9→305.8
7.	Fipronil	5.56	negative	437.15	434.9→329.8
8.	Noviflumuron	7.08	negative	529.1	527.1→343.8

Column

Pinnacle DB Aqueous C18 (cat.# 9418252)

Dimensions:

50 mm x 2.1 mm ID

Particle Size:

1.9 µm

Pore Size:

140 Å

Temp.:

35 °C

Standard/Sample

multicomponent pesticide standard

Diluent:

water

Conc.:

33.3 ppb each pesticide

Inj. Vol.:

5 µL

Mobile Phase

10 mM NH₄OAc in water

10 mM NH₄OAc in methanol

Flow:

0.60 mL/min

Max Pressure:

~517 bar

Detector	Applied Biosystems/MDS Sciex LC/MS/MS
Model #:	4000 QTRAP LC-MS/MS system
Ion Source:	TurboIonSpray^®
Ion Mode:	ESI-
Ion Spray Voltage:	-4.2 kV
Gas 1:	40 psi (275.8 kPa)
Gas 2:	60 psi (413.7 kPa)
Source Temp.:	500 °C
Instrument	Shimadzu UFLCXR

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