Premium
New infrared band assignments for the arsenate ion adsorbed on synthetic goethite (α‐FeOOH)
Author(s) -
LUMSDON D. G.,
FRASER A. R.,
RUSSELL J. D.,
LIVESEY N. T.
Publication year - 1984
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1984.tb00294.x
Subject(s) - arsenate , goethite , adsorption , chemistry , infrared spectroscopy , inorganic chemistry , infrared , ion , phosphate , arsenic , organic chemistry , physics , optics
SUMMARY Infrared spectroscopy was used to show that arsenate is adsorbed on the surface of synthetic goethite (α‐FeOOH) as the acidic HAsO 4 2 ‐ ion, replacing singly coordinated surface OH groups. In this respect, arsenate is analogous to phosphate, but its larger size apparently causes it to interact more strongly with some of the OH groups that remain on the surface. This has suggested an alternative assignment for the absorption bands of these OH groups.