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Comments on the "Direct Observation of Tetrahedrally Coordinated Fe(III) in Ferrihydrite.
MedLine Citation:
PMID:  22967048     Owner:  NLM     Status:  Publisher    
We have read with interest the discussions between Manceau (Environ. Sci. Technol. 46, 2882-2884)and Peak and Regier(Environ. Sci. Technol 46, 2885, 3163) with regard to the interpretation of the Fe L-edge spectrum of ferrihydrite. We draw on some experimental datasets to demonstrate that the ferrihydrite L-edge spectrum may be explained by octahedral Fe alone. The limitations of using summations of Fe L-edge XAS in applications to poorly crystalline sites, where the components are imperfectly understood, are discussed. The limitations of using summations of Fe L-edge XAS to interpret the Fe configurations of poorly crystalline materials with more than one Fe coordination are discussed, particularly applicable when the components used are imperfectly understood.
Rosalie K Hocking; Will P Gates; John D Cashion
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-11
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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