FormNo. 203-821-260 02/05-REV0
LECO is a registered trademark of LECO Corporation
2
GC-TOFMS
Column:
20m x 0.25mm x 0.71 µm Rtx-TNT (Restek)
Carrier:
Helium at 2mL/min, constant flow
Injection:
See above.
Oven Program:
40°C (1min), 40°/min to 340°
Total Run Time:
9min
MS: LECO Pegasus TOFMS
Ionization:
Electron ionization at 70 eV
Source Temperature: 200°C
StoredMass Range: 35 to 450 u
Acquisition Rate:
10 spectra/second
DataProcessing
LECOChromaTOF
®
softwarewith automated peak find and spectral deconvolution.
Results andDiscussion
The automated Peak Find algorithm that is integral to ChromaTOF softwarewas used to locate all
ballpoint ink VOCs that eluted in a retention range approximately between acetone (not included in
tables) and 2-phenoxyethanol (included in tables). Separate reference tables were prepared of
major volatiles in black and blue inks. Tables 1 and 2 contain the results for major components of
black and blue ballpoint pen inks. All of the values in the table are relative tomixed ink samples
and do not necessarily indicate themajor volatile component of each ink. Interestingly, all of the
ballpoint pen inks, except for black pens 4 and 5, are distinctly different as to their volatile
constituents. This was quickly and easily determined through fast GC-TOFMS analysis and the fully
automated data processing availablewith ChromaTOF.
Table1.
Relative component amounts for eight black ballpoint pen inks analyzed using
SPME GC-TOFMS.
CompoundName
1
2
3
4
5
6
7
8
Ethylene glycol
930
Propylene glycol
100
13
310
Hexylene glycol
630
Phenol
8
100
82
2
4
52
140
Aniline
150
85
120
Ethoxy ethoxyethanol
350
3
2-Ethylhexanol
17
97
170
140
120
35
Benzyl alcohol
91
120
170
150
Phenylethanol
170 15
53
85
62
2-Phenoxyethanol
33
46
41
38
22
75
Phenoxypropanol
210
95
