Natural speciation of Mn, Ni and Zn at the micrometer scale in a clayey paddy soil using X-ray fluorescence, absorption, and diffraction.

Alain Manceau (1) , Caterina Tommaseo (1) , Sophie Rihs (2) , Nicolas Geoffroy (1) , Daniel Chateigner (3) , Michel Schlegel (4) , Delphine Tisserand (1) , Matthew A. Marcus (5) , Nobumichi Tamura (5) , Zueng-Sang Chen (6)

1 LGIT - Laboratoire de Géophysique Interne et Tectonophysique
2 CGS - Centre de géochimie de la surface
3 CRISMAT - Laboratoire de cristallographie et sciences des matériaux
4 SPCSI - Service de Physique et de Chimie des Surfaces et Interfaces
5 ALS - Advanced Light Source [LBNL Berkeley]
6 Department of Agricultural Chemistry

The natural speciation od Mn (0,19 g/kg), Ni (46 mg/kg) and Zn (42 mg/kg) in the argillic horizon (120 cm depth, pH = 5,6) of an Ultisol from a paddy soil in northern Taiwan was invistigated by advanced X-ray sunchrotron techniques.

Mots clés: Mn; Ni; Zn; soil; x-ray diffraction; XRD; x-ray fluorescence; SXRF; EXAGS spectroscopy; P-EXAFS; paddy soil; speciation; heavy metal

Domaines: Géochimie

Alain Manceau, Caterina Tommaseo, Sophie Rihs, Nicolas Geoffroy, Daniel Chateigner, et al.. Natural speciation of Mn, Ni and Zn at the micrometer scale in a clayey paddy soil using X-ray fluorescence, absorption, and diffraction.. Geochimica et Cosmochimica Acta, 2005, 69/16, pp.4007-4034. ⟨10.1016/j.gca.2005.03.018⟩. ⟨hal-00107092⟩