Near ambient pressure-x-ray photoelectron spectroscopy (NAP-XPS) is a less traditional form of XPS that allows samples to be analyzed at relatively high pressures, i.e., at ca. 2500 Pa, or higher in some cases. With NAP-XPS, XPS can probe moderately volatile liquids, biological samples, porous materials, and/or polymeric materials that outgas significantly. In this submission, we show an NAP-XPS survey spectrum, and also O 1s and C 1s narrow scans, of a commercial soft drink, Coca-Cola. Clearly this is a material that could not be analyzed at moderate pressures by conventional XPS. The C 1s narrow scan is fit to five synthetic components. The O 1s narrow scan shows strong contributions from both liquid and gas phase water. A small N 1s signal in the survey spectrum is attributed to background nitrogen. The shape of the uniqueness plot corresponding to the C 1s fit suggests that the fit parameters are statistically significant.

1.
P. G.
Rouxhet
,
A. M.
Misselyn-Bauduin
,
F.
Ahimou
,
M. J.
Genet
,
Y.
Adriaensen
,
T.
Desille
,
P.
Bodson
, and
C.
Deroanne
,
Surf. Interface Anal.
40
,
718
(
2008
).
2.
Y.
Nikolova
,
J.
Petit
,
C.
Sanders
,
A.
Gianfrancesco
,
J.
Scher
, and
C.
Gaiani
,
Colloids Surf., B
125
,
12
(
2015
).
3.
D. I.
Patel
,
T.
Roychowdhury
,
V.
Jain
,
D.
Shah
,
B. I.
Johnson
,
T. G.
Avval
,
S.
Chatterjee
,
S.
Bahr
,
P.
Dietrich
,
M.
Meyer
,
A.
Thißen
, and
M. R.
Linford
,
Surf. Sci. Spectra
26
016801
(
2019
).
4.
P. M.
Dietrich
,
S.
Bahr
,
T.
Yamamoto
,
M.
Meyer
, and
A.
Thissen
,
J. Electron Spectrosc. Relat. Phenom.
231
,
118
(
2019
).
5.
M.
Kjærvik
,
A.
Hermanns
,
P.
Dietrich
,
A.
Thissen
,
S.
Bahr
,
B.
Ritter
,
E.
Kemnitz
, and
W. E. S.
Unger
,
J. Phys. Condens. Matter
29
,
474002
(
2017
).
6.
C.
Rodriguez
,
P.
Dietrich
,
V.
Torres-Costa
,
V.
Cebrián
,
C.
Gómez-Abad
,
A.
Díaz
,
O.
Ahumada
, and
M.
Manso Silván
,
Appl. Surf. Sci.
492
,
362
(
2019
).
7.
B.
Srdjenovic
,
V.
Djordjevic-Milic
,
N.
Grujic
,
R.
Injac
, and
Z.
Lepojevic
,
J. Chromatogr. Sci.
46
,
144
(
2008
).
8.
H. J.
Issaq
,
D.
Weiss
,
C.
Ridlon
,
S. D.
Fox
, and
G. M.
Muschik
,
J. Liq. Chromatogr.
9
,
1791
(
1986
).
9.
I.
Gerald
,
D. E.
Arthur
, and
A.
Adedayo
,
Am. J. Eng. Res.
3
,
124
(
2014
).
10.
A. N.
Strohl
,
J. Chem. Educ.
62
,
447
(
1985
).
11.
V.
Gupta
,
H.
Ganegoda
,
M. H.
Engelhard
,
J.
Terry
, and
M. R.
Linford
,
J. Chem. Educ.
91
,
232
(
2014
).
12.
G.
Beamson
and
D.
Briggs
,
High Resolution XPS of Organic Polymers: The Scienta ESCA300 Database
(
Wiley, Chichester
,,
1992
).
13.
B.
Singh
,
A.
Diwan
,
V.
Jain
,
A.
Herrera-Gomez
,
J.
Terry
, and
M. R.
Linford
,
Appl. Surf. Sci.
387
,
155
(
2016
).
14.
D.
Shah
,
D. I.
Patel
,
T.
Roychowdhury
,
G. B.
Rayner
,
N.
O'Toole
,
D. R.
Baer
, and
M. R.
Linford
,
J. Vac. Sci. Technol. B
36
,
062902
(
2018
).
15.
C. V.
Cushman
,
C. T.
Dahlquist
,
P. M.
Dietrich
,
S.
Bahr
,
A.
Thissen
,
O.
Schaff
,
J.
Banerjee
,
N. J.
Smith
, and
M. R.
Linford
,
Vac. Technol. Coat.
18
,
23
(
2017
).
16.
M. R.
Linford
,
T.
Roychowdhury
, and
D.
Shah
,
Vac. Technol. Coat.
19
,
26
(
2018
).
17.
S.
Axanda
 et al,
Sci. Rep.
5
,
9788
(
2015
).
18.
M.
Salmeron
and
R.
Schlögl
,
Surf. Sci. Rep.
63
,
169
(
2008
).
19.
N.
Toyoda
and
I.
Yamada
,
Appl. Surf. Sci.
310
,
112
(
2014
).
20.
L.
Trotochaud
 et al,
J. Phys. Chem. B
122
,
1000
(
2018
).
21.
L.
Yu
 et al,
Phys. Chem. Chem. Phys.
19
,
30798
(
2017
).
22.
V.
Jain
,
M. C.
Biesinger
, and
M. R.
Linford
,
Appl. Surf. Sci.
447
,
548
(
2018
).
24.
S.
Tougaard
and
B.
Jørgensen
,
Surf. Sci.
143
,
482
(
1984
).

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