Nonylphenol, Bisphenol A, 4-tert-Octylphenol, Nonylphenol Monoethoxylate, and Nonylphenol Diethoxylate on the Rxi-5Sil MS by ASTM D7065-11 (Constant Flow)

	Peaks	t_R (min)	Conc. (µg/mL)	On-Column (ng)
1.	Acenaphthene-D10	13.6	25	2.5
2.	4-tert-Octylphenol	15.4	32	3.2
3.	Nonylphenol	15.9–17.0	160	16
4.	Phenanthrene-D10	17.1	25	2.5
5.	4-Nonylphenol	18.0	32	3.2
6.	Nonylphenol monoethoxylate	18.5–20.0	320	32
7.	4-Nonylphenol monoethoxylate	20.5	32	3.2
8.	Bisphenol A	20.9	32	3.2
9.	Nonylphenol diethoxylate	21.0–22.3	640	64
10.	Chrysene-D12	23.4	25	2.5

Injection
Column	Rxi-5Sil MS, 30 m, 0.25 mm ID, 0.25 µm (cat.# 13623)
Standard/Sample	Method 525.2 internal standard mix (cat.# 31825)
	AccuStandard nonylphenol calibration standard (cat.# M-1626)
Diluent:	Dichloromethane
Inj. Vol.:	1.0 µL split (split ratio 10:1)
Liner:	Premium 4 mm Precision liner w/wool (cat.# 23305.5)
Inj. Temp.:	290 °C
Oven
Oven Temp.:	50 °C (hold 2 min) to 320 °C at 10 °C/min (hold 5 min)
Carrier Gas	He, constant flow
Flow Rate:	1.44 mL/min

Detector

Mode:

Scan

Scan Program:

Group	Start Time (min)	Scan Range (amu)	Scan Rate (scans/sec)
1	3.0	45-500	0.8

Transfer Line Temp.:

290 °C

Analyzer Type:

Quadrupole

Source Type:

Extractor

Extractor Lens:

9mm ID

Source Temp.:

325 °C

Quad Temp.:

150 °C

Solvent Delay Time:

3.0 min

Tune Type:

DFTPP

Ionization Mode:

Instrument

Agilent 7890B GC & 5977A MSD

Notes

The use of constant flow, rather than constant pressure, yields a faster analysis and more constant peak widths throughout the chromatogram.

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