X-Ray Absorption Spectroscopy Applied to Metal Accumulation

Article Preview

Abstract:

X-Rays Absorption Fine Structure Spectroscopy (XAFS) is an analytical technique that can be used as a probe to characterize almost all elements, even if they appear in diluted or non-crystalline systems. This is due to the fact that the absorption probability of X-rays has a unique feature for each element, and is modulated by the chemical and physical state of that element, as well as by its neighborhood. This paper presents a brief description of the X-rays absorption phenomenon and the analytical technique involving this phenomenon, as well as the application of XAFS in biosorption studies. For more details on XAFS theory, refer to [1].

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 71-73)

Pages:

613-616

Citation:

Online since:

May 2009

Export:

Price:

[1] D.C. Koningsberger, R. Prins (eds. ): X-Ray Absorption, vol. 92 of Chemical Analysis, John Wiley & Sons, New York (1988).

Google Scholar

[2] G. Cordeiro Silva et al.: Advanced Materials Research Vol. 20-21 (2007), p.643.

Google Scholar

[3] A.L. Ankudinov et al.: Phys. Rev. B 58 (1998), p.7565.

Google Scholar

[4] B. Ravel, M. Newville: J. Synchrotron Rad. 12 (2005), p.537.

Google Scholar

[5] M.C. Teixeira , V.S.T. Ciminelli: Environ. Sci. Tecnol. 39 (2005), p.895.

Google Scholar

[6] M. I. Boyanov et al.: Geochim. Cosmochim. Acta 67 (2003), p.3299.

Google Scholar

[7] A.C.Q. Ladeira et al.: Geochim. Cosmochim. Acta 65 (2001), p.1211.

Google Scholar

[8] I.F. Vasconcelos, et al: Chem. Geol. 249 (2008), p.237.

Google Scholar

[9] A.M.F. Guimarães et al.: Applied Clay Science 42 (2009), p.410. 0 1 2 3 4 Fe-As scattering Fe-C scattering Fe-O scattering experimental data R (Å) FT of absorption intensity (u. a. ).

Google Scholar