Faculty Directory
Dr.
Tsutomu Ohno
大野 カ
Research Area:
Organic Matter Chemistry, Phosphorus Soil Chemistry,
土壌化学
E-mail:
ohno@maine.edu
Phone:
207-581-2975
Office:
103 Deering Hall
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Bio: Dr. Ohno received his
B.S. degree in Chemistry from Kansas State University in 1977. He
received a M.S. (1981) and Ph.D. (1983) in Soil Science from Cornell
University. He joined the faculty in 1987. He is currently a Professor of Soil Chemistry.
Current Research:
My current research efforts focus
on the interaction of dissolved organic matter and soil phosphorus
in both managed agricultural systems as well as forest ecosystems.
My specific projects involve using IR and fluorescence spectroscopy
and soft-ionization mass spectrometry to characterize water-soluble organic matter isolated
from plant biomass, animal manures, and soils. The mechanism
of bonding of organic matter and phosphorus to mineral surfaces is
probed using ATR-FTIR. Recently my research has utilized
multi-dimensional fluorescence spectroscopy combined with PARAFAC to
decompose the complex fluorescence landscape into chemically
meaningful spectral components.
Recent Publications:
He, Z., T. Ohno,
F. Wu, D.C. Olk, C.W. Honeycutt, and M. Olanya. 2008.
Capillary electrophoresis and fluorescence excitation-emission
matrix spectroscopy for characterization of humic substances.
Soil Sci. Soc. Am. J. (in press).
Hunt, J.F., T.
Ohno, and I.J. Fernandez. 2008. Influence of foliar
phosphorus and nitrogen content on chemical properties of water
extractable organic matter derived from fresh and decomposed sugar
maple leaves. Soil Bio. Biochem. 40:1931-1939.
Ohno, T., Z. Wang,
and R. Bro. 2008. PowerSlicing to determine fluorescence lifetimes
of water-soluble organic matter derived from soils, plant biomass,
and animal manures. Anal. Bioanal. Chem. 390:2189-2194.
Ohno, T., A.
Amirbahman, and R. Bro. 2008. Parallel factor analysis of
excitation-emission matrix fluorescence spectra of water-soluble
organic matter as basis for the determination of conditional metal
binding parameters. Environ. Sci. Technol. 42:186-192.
Hunt, J.F., T. Ohno, Z. He, and D.B.
Dail. 2007. Inhibition of phosphorus sorption to goethite,
gibbsite, and kaolin by fresh and decomposed organic matter. Biol.
Fertility Soils 44:277-288.
Ohno, T., B.R.
Hoskins, and M.S. Erich. 2007. Soil organic matter effects on plant
available and water soluble phosphorus. Biol. Fertility Soils
43:683-690.
Ohno, T., I.J.
Fernandez, S. Hiradate, and J.F. Sherman. 2007. Effects of soil
acidification and forest type on water-soluble soil organic matter
properties. Geoderma 140:176-187.
Hunt, J.F., and T. Ohno. 2007.
Characterization of fresh and decomposed dissolved organic matter
using excitation-emission matrix fluorescence spectroscopy and
multi-way analysis. J. Agric. Food Chem. 55:2121-2128.
Ohno, T., J.
Chorover, A. Omoike, and J. Hunt. 2007. Molecular weight and
humification index as predictors of adsorption of plant- and
manure-derived dissolved organic matter to goethite. Eur. J. Soil
Sci. 58:125-132.
Hunt, J.F., T. Ohno, Z. He, C.W.
Honeycutt, and D.B. Dail. 2007. Influence of decomposition on
chemical properties of plant- and manure-derived dissolved organic
matter and sorption to goethite. J. Environ. Qual. 36:135-143.
Banaitis, M.R., H. Waldrip-Dail,
M.S. Diel, B.C. Holmes, J.F. Hunt, R.P. Lynch, and T. Ohno. 2006.
Investigating sorption-driven dissolved organic matter fractionation
by multi-dimensional fluorescence spectroscopy and PARAFAC. J.
Colloid Interface Sci. 304:271-276 .
Ohno, T., and R.
Bro. 2006. Dissolved organic matter characterization using
multi-way spectral decomposition of fluorescence landscapes. Soil
Sci. Soc. Am. J. 70:2028-2037.
He, Z., T. Ohno, B.J. Cade-Menun,
M.S. Erich, and C.W. Honeycutt. 2006. Spectral and chemical
characterization of phosphates associated with humic substances.
Soil Sci. Soc. Am. J. 70:1741-1751.
Sherman, J., I.J. Fernandez, S.A.
Norton, T. Ohno, and L.E. Rustad. 2006. Soil aluminum, iron, and
phosphorus dynamics in response to long-term experimental nitrogen
and sulfur additions at the Bear Brook Watershed in Maine, USA.
Environ. Monitoring Assessment 121:419-427.
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