Interaction Between Nano-Anatase TiO2 and Liver DNA from Mice In Vivo

Table 3 The coordination parameters obtained from curve fitting of EXAFS

Sample (fresh)	Shell	N	R(Å)	σ ²(Å²)	∆E ₀(eV)
	Ti–N(O)	3	1.87	0.0029	−3.1
	Ti–P	2	2.38	0.0057

Shell indicates the type of ligands for each shell of the fit, N is the coordination number, R is the metal-scatterer distance, σ ² is a mean square deviation in R and ∆E ₀ is the shift in E ₀ for the theoretical scattering functions. Numbers in parentheses were not varied during optimization
The errors of data and fits are roughly estimated from the change of the residual factors to be 5% for N, 0.25% for R, 10% for σ ² and 4 eV for ∆E ₀. No ambiguities of the theoretical standards are included