Skip to main content
. Author manuscript; available in PMC: 2012 Nov 16.
Published in final edited form as: J Am Chem Soc. 2011 Oct 20;133(45):18272–18279. doi: 10.1021/ja206203c

Table 2.

Parameters fit to EXAFS spectra of A549 cells treated with 5 μM selenite for 24 h.a

Treatment (μM) scatterer coordination Number (N) interatomic distance (R, Å) Debye-Waller factor (σ2, Å2) −ΔE0 (eV) fit error
5 S 1.3 2.195(5) 0.0023(3) 9(1) 0.30
Se 0.7 2.370(4) 0.0017(1)
a

The k-range was 1 – 14.2 Å−1 and a scale factor (S02) of 0.9 was used for all fits. ΔE0 = E0 − 12658 (eV) where E0 is the threshold energy. Values in parentheses are the estimated standard deviation derived from the diagonal elements of the covariance matrix and are a measure of precision. The fit-error is defined as [Σk6(χexp−χcalc)2/Σk6χexp2]½.