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United States Department of Agriculture

Agricultural Research Service

Research Project: NUTRIENT CYCLING AND UTILIZATION ON ORGANIC DAIRY FARMS Title: Characterization of Phosphorus Associated With Natural Organic Matter

Authors
item He, Zhongqi
item Honeycutt, Charles
item Ohno, Tsutomu - UNIVERSITY OF MAINE
item Wu, Fengchang - CHINESE ACAD OF SCIENCES
item Zhang, Runyu - CHINESE ACAD OF SCIENCES

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: October 24, 2007
Publication Date: May 1, 2009
Citation: He, Z., Honeycutt, C.W., Ohno, T., Wu, F., Zhang, R. 2009. Characterization of Phosphorus Associated With Natural Organic Matter. In Wu, F., Xing, B., editors. Natural Organic Matter and its Significace in the Environment. Beijing, China: Science Press. p.265-279.

Technical Abstract: Understanding the forms of P present in natural organic matter (NOM) and their transformations is an important part of environmental NOM chemistry. In this book chapter, we review the various methods that have been used to characterize P in NOM. We analyze and discuss the general application of solution P31 nuclear magnetic resonance (NMR) spectroscopy, enzymatic hydrolysis, and UV irradiation in studies of P in terrestrial and aquatic NOM. We then detail a case study of four NOM samples using the three methods. We conclude that, of the various methods available for P characterization, the selection of a particular method should depend on the objectives of the study, accessibility, and operation cost. On the other side, more complete characterization of NOM-bound P with multiple methods is required for a comprehensive understanding of the dynamics and mechanisms of NOM-bound P transformations from unavailable to available forms.

Last Modified: 12/19/2014
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