Chlorophenoxyacid Herbicides (methyl esters) US EPA Method 515 by GC/ECD on Rtx-440

GC_EV00756

	Peaks	Conc. (µg/mL)
1.	Dalapon methyl ester	100
2.	3,5-Dichlorobenzoic acid methyl ester	50
3.	Dicamba methyl ester	50
4.	Dichlorprop methyl ester	100
5.	2,4-D methyl ester	100
6.	Pentachloroanisole	10
7.	2,4,5-TP (Silvex) methyl ester	25
8.	Chloramben methyl ester	50

	Peaks	Conc. (µg/mL)
9.	2,4,5-T methyl ester	25
10.	2,4-DB methyl ester	100
11.	Dinoseb methyl ester	100
12.	Bentazon methyl ester	100
13.	Picloram-methyl ester	50
14.	DCPA methyl ester (Chlorthal-dimethyl)	100
15.	Quinclorac methyl ester	50
16.	Acifluorfen methyl ester	50

Injection
Column	Rtx-440, 30 m, 0.32 mm ID, 0.25 µm (cat.# 12924)
Sample	515.4 Methylated Chlorinated Acids Mix (cat.# 32444)
Diluent:	MTBE
Conc.:	10-100µg/mL each methyl ester
Inj. Vol.:	1.0 µL splitless (hold 0.45 min)
Liner:	Double Gooseneck Splitless (4mm) (cat.# 20784)
Inj. Temp.:	225 °C
Oven
Oven Temp.:	70 °C (hold 1 min) to 210 °C at 20 °C/min (hold 1 min) to 300 °C at 5 °C/min
Carrier Gas	He, constant pressure (10.5 psi, 72.4 kPa)
Temp.:	70 °C

Detector	ECD @ 320 °C

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