Resolution of Chrysene from Isobaric Interferences on Rxi-PAH (60 m x 0.25 mm x 0.10 µm)

	Peaks	t_R (min)	Conc. (µg/mL)	Quant Ion
1.	Benzo[ghi]fluoranthene	46.14	1.5	226
2.	Benzo[c]phenanthrene	46.38	2.0	228
3.	Benz[a]anthracene	49.13	8.8	228
4.	Cyclopenta[cd]pyrene	49.64	5.2	226
5.	Triphenylene	49.96	1.8	228
6.	Chrysene	50.15	8.9	228

Injection
Column	Rxi-PAH, 60 m, 0.25 mm ID, 0.10 µm (cat.# 49317)
Standard/Sample	SV internal standard mix (cat.# 31206)
	Coronene-D12 (CIL) (cat.# DLM-2715)
	Benzo[a]pyrene-D12 (CIL) (cat.# DLM-258-0)
	Aromatics in toluene (NIST) (cat.# 2260a)
	Native PAH stock (Wellington Labs) (cat.# PAH-STK-A)
	EU 15+1 PAH standard (cat.# 32470)
	Custom PAH SIM standard (cat.# 557484)
Diluent:	Toluene
Conc.:	0.71 to 10 µg/mL
Inj. Vol.:	1 µL split (split ratio 10:1)
Liner:	Premium 4 mm Precision liner w/wool (cat.# 23305.1)
Inj. Temp.:	275 °C
Oven
Oven Temp.:	110 °C (hold 1.6 min) to 175 °C at 30 °C/min to 265 °C at 1.6 °C/min to 350 °C at 4 °C/min (hold 15 min)
Carrier Gas	He, constant flow
Flow Rate:	1.0 mL/min

Detector

Mode:

SIM

SIM Program:

Group	Start Time (min)	Ion(s) (m/z)	Dwell (ms)
1	5.09	102.1, 108.1, 128.1, 136.2	20
2	6.68	115.1, 142.1	20
3	7.55	76.1, 141.1, 154.1, 156.2	20
4	8.77	75.6, 152.1	20
5	9.56	76.1, 153.1, 162.2, 164.2	20
6	10.26	155.1, 170.2	20
7	11.12	82.4, 165.1	20
8	14.27	139.1, 184.1	20
9	17.26	152.1, 160.2, 178.1, 188.2	20
10	20.58	94.6, 165.1, 190.1, 192.1	20
11	26.32	101.1, 202.1	20
12	34.97	92.1, 184.1	20
13	37.36	108.0, 216.0	20
14	41.78	196.1, 212.2	20
15	45.86	113.1, 226.1, 228.1	20
16	47.86	114.0, 228.1	20
17	49.49	113.1, 120.1, 226.1, 228.1, 240.1	20
18	51.24	154.1, 252.1	20
19	54.16	119.8, 242.2	20
20	60.13	125.1, 126.1, 252.1	20
21	64.77	126.1, 252.1	20
22	66.15	125.1, 126.1, 132.1, 252.1, 264.1	20
23	68.07	125.0, 132.2, 252.1, 264.1	20
24	69.10	252.1, 268.1	20
25	71.92	139.1, 139.5, 278.1, 279.1	20
26	74.87	138.1, 139.1, 276.1, 278.1	20
27	75.81	138.1, 139.1, 278.1	20
28	76.82	138.1, 276.1	20
29	77.53	132.6, 138.1, 267.1, 276.1	20
30	80.20	151.0, 302.1	20
31	83.40	150.0, 151.0, 156.1, 300.1, 302.1, 312.1	20
32	84.88	151.0, 302.1	20

Transfer Line Temp.:

320 °C

Analyzer Type:

Quadrupole

Source Type:

Extractor

Extractor Lens:

9 mm ID

Source Temp.:

350 °C

Quad Temp.:

200 °C

Solvent Delay Time:

3 min

Ionization Mode:

Instrument

Agilent 7890B GC & 5977A MSD

Notes

Conditions optimized using EZGC software produce good separation of dibenzo[a,c]anthracene and dibenzo[a,h]anthracene from indeno[1,2,3-cd]pyrene, triphenylene from chrysene, as well as the benzofluoranthene isomers.

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