. Author manuscript; available in PMC: 2019 Sep 11.

Published in final edited form as: Sci Total Environ. 2017 Sep 20;613-614:714–723. doi: 10.1016/j.scitotenv.2017.09.050

Table 2:

Summary of cerium speciation extracted from CPSC wipe method cloths determined by LCF analysis of first derivate of normalized XAFS Spectra. Samples marked N/A have cerium concentration low enough creating insufficient signal-to-noise ratios during XAFS data collection and were not used in LCF analysis.

Cerium - Water- Composite
Species	Time Zero	2 Weeks	4 Weeks	8 Weeks	12 Weeks	16 Weeks	20 Weeks	24 Weeks
CeO₂	100	100	100	100	N/A	70	N/A	N/A
Ce(III) Oxalate	0	0	0	0	N/A	30	N/A	N/A
Cerium - Water- Wood
CeO₂	100	100	95	91	92	79	73	N/A
Ce(III) Oxalate	0	0	5	9	8	21	27	N/A
Cerium - Stain - Wood
CeO₂	100	95	91	86	94	88	N/A	N/A
Ce(III) Oxalate	0	5	9	14	6	12	N/A	N/A
Sawdust Surfaces
Species	Water/Wood/Indoor		Water/Wood/Outdoor		Stain/Wood/Indoor		Stain/Wood/Outdoor
CeO₂	98		70		100		93
Ce(III) Oxalate	3		30		0		7