Professor Emeritus

• Office Phone: 301-405-1797
• Office Address: 3103
• Email: helz@umd.edu
• Publications:www.researcherid.com/rid/D-1449-2010

Education

• Princeton University, A.B. Magna cum laude, 1964
• Pennsylvania State University, Ph.D. 1971

Professional Experience

•  Assistant Professor to Professor, 1970-2004
• Director, Maryland Water Resources Research Center, 1990-2001
• Associate Editor, Geochimica et Cosmochimica Acta, 2003-
• Professor Emeritus, 2005-
• Complete Curriculum Vitae

 Research Interests

Interdisciplinary expertise in environmental geochemistry; specific interests in water disinfection chemistry, trace metal chemistry in sulfidic waters and Chesapeake Bay geochemistry.

Major Recognitions and Honors

•  Fellow, Mineralogical Society of America, 1985
• Environmental Science Fellow, AAAS, 1988
• Senior Visiting Fellow, Manchester University, 1989-1990
• Allen Cox Visiting Professor, Stanford University, 1998-1999
• Distinguished Scholar-Teacher, University of Maryland, 2001-2002
• University Rainmaker (Top 100 in research support) 2003-2004
• Fulbright Scholar (Croatia) 2005-2006