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. Author manuscript; available in PMC: 2014 Jul 14.
Published in final edited form as: Surf Interface Anal. 2008 Oct;40(10):1356–1361. doi: 10.1002/sia.2904

Table 2.

XPS parameters for Ca2p, C1s, and O1s core levels from the three calcium carbonate polymorphs. The values shown below are “BE (FWHM).”

aragonite calcite Vaterite
Ca2p Ca2p3/2 347.9 (1.6) 346.5 (1.7) 347.4 (1.9)
Ca2p1/2 351.5 (1.5) 350.1 (1.7) 350.9 (2.0)
peak ratio 2.2 2.1 2.1
C1s CxHy 285.0 (1.8) 285.0 (1.8) 285.0 (2.1)
CO3 289.3 (1.8) 289.3 (1.8) 289.3 (2.0)
peak ratio 3.5 2.6 2.8
O1s OI 534.9 (1.8) 533.9 (1.7) 534.4 (1.8)
Oii 536.7 (1.6) 535.6 (1.9) 536.2 (1.6)
peak ratio 7.0 5.2 6.3