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Published online 6 July 2006
Published in J Environ Qual 35:1319-1328 (2006)
DOI: 10.2134/jeq2006.0008
© 2006 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Preparation and FT–IR Characterization of Metal Phytate Compounds

Zhongqi Hea,*, C. Wayne Honeycutta, Tiequan Zhangb and Paul M. Bertschc

a USDA–ARS, New England Plant, Soil, and Water Laboratory, Orono, ME 04469
b Agriculture & Agri-Food Canada, Greenhouse & Processing Crop Center, Harrow, ON, N0R 1G0, Canada
c Savannah River Ecology Laboratory, University of Georgia, P.O. Drawer E, Aiken, SC 29802


Figure 1
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  		Fig. 1. Fourier transform infrared spectroscopy (FT–IR) of dodecasodium phytate and the synthetic metal phytate compounds.

 

Figure 2
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  		Fig. 2. Possible molecular structures of metal phytates. (A) Ionic 5-axial/1-equatorial conformation associated with Na+. For clarity, metal bodings are only shown on P5. (B) M2+ coordinate bonding conformations. (C) M3+ coordinate bonding conformation.

 

Figure 3
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  		Fig. 3. Fourier transform infrared spectroscopy (FT–IR) of trisodium phosphate dodecahydrate and the synthetic metal phosphate compounds.

 

Figure 4
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  		Fig. 4. Fourier transform infrared spectroscopy (FT–IR) of the mixtures of phytate compounds. Heavy cureves are the spectra of the mixtures of two metal phytates with about equal amounts. Light curves are the spectra of individual phytate in half height and the summation of the two spectra.

 

Figure 5
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  		Fig. 5. FT–IR spectra of the mixtures of trisodium phosphate dodecahydrate and the synthetic metal phosphate compounds with dodecasodium phytate.

 




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Copyright © 2006 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.