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Table II Selenium K-edge energies for reference standards, based on maximum of first derivative of XANES spectra

From: Micro-spectroscopic investigation of selenium-bearing minerals from the Western US Phosphate Resource Area

Species

K-edge energy (eV)

Organic Se compounds

Se-cystine

12 657.5

Se-eithionine

12 659.0

Se-methionine

12 659.0

Se-methyl-selenocysteine

12 659.5

Se(-II) compounds

CuSe

12 656.0

FeSe2 (Synthetic Ferroselite)

12 657.0

CuSe2 (Krutaite)

12 657.0

NiSe2 (Penroseite)

12 657.0

ZnSe

12 656.5

Cu1.8Se (Berzelianite)

12 656.5

SeS2

12 658.0

Se (0) compounds

Elemental Se (monoclinic)

12 658.0

Elemental Se (orthorhomblic)

12 658.0

Se (IV) compounds

Na2SeO3

12 662.0

CuSeO3H2O (Chalcomenilte)

12 662.0

Fe2Se3O96H2O (Mandarirnoite)

12 662.0

Se (VI) compounds

Na2SeO4

12 664.0