J.J. Morgan



Marvin L. Goldberger Professor of Environmental
Engineering Science, Emeritus

California Institute of Technology
Environmental Science and Engineering



Aquatic chemistry


1200 East California Boulevard
M/C 131-24

202 Linde + Robinson Laboratory
Pasadena, CA 91125

(626) 395-3145 [Tel]
(626) 395-8535 [Fax]


b. 1932
B.C.E. 1954, Manhattan College
M.S.E. 1956, University of Michigan
M.A. 1962 and Ph.D. 1964, Harvard University
D.Sc.H.C. 1989, Manhattan College


Current research

Influence of ligands on aqueous Mn(II) oxidation by O2 at alkaline pH


Morgan, J. J., Kinetics of reaction between O2 and Mn(II) species in aqueous solutions. Geochimica et Cosmochimica Acta 2005, 69, (1), 35-48.

Rosso, K. M.; Morgan, J. J., Outer-sphere electron transfer kinetics of metal ion oxidation by molecular oxygen. Geochimicae et Cosmochimica Acta 2002, 66, (24), 4223-4233.

Morgan, J. J., Manganese in natural waters and earth's crust: Its availability to organisms. In Metal Ions in Biological Systems, Vol 37: Manganese and Its Role in Biological Processes, Sigel, A.; Sigel, H., Eds. 2000; Vol. 37, pp 1-34.

Klewicki, J. K.; Morgan, J. J., Dissolution of b-MnOOH particles by ligands: Pyrophosphate, ethylenediaminetetraacetate, and citrate. Geochimica et Cosmochimica Acta 1999, 63, (19-20), 3017-3024.

Klewicki, J. K.; Morgan, J. J., Kinetic behavior of Mn(III) complexes of pyrophosphate, EDTA, and citrate. Environmental Science & Technology 1998, 32, (19), 2916-2922.

Morgan, J. J.; Davies, S. H. R., Comment on "Linking microscopic and macroscopic data for heterogeneous reactions illustrated by the oxidation of manganese (II) at mineral surfaces." Geochimica et Cosmochimica Acta 1998, 62, (2), 361-363.

Scott, M. J.; Morgan, J. J.,. Reactions at oxide surfaces. 1.Oxidation of As(III) by synthetic birnessite. Environmental Science & Technology 1995, 29, (8), 1898-1905.