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David W. Muenow, Professor Emeritus

Contact

Department of Chemistry
University of Hawai’i at Manoa
2545 McCarthy Mall
Honolulu, HI 96822-2275

Phone: (808) 956-7666
Fax: (808) 956-5908
Email: David Muenow
Office: HIG 410

Educational Background

David Muenow received his B.A. from Carleton College in 1961, his Ph.D. from Purdue University in 1967, and was a postdoctoral fellow at Rice University from 1967 to 1970. He joined the faculty at Hawaii in 1970 where his research interests lie principally in geochemistry.

Research Interests

Our research efforts are directed to the study of the character and abundance of volatiles in silicates and other materials of geochemical importance. Included among these are submarine and subaerial volcanic rocks and their included phenocrysts, meteorites, mantle-derived minerals, and synthetic high-pressure glasses. A principal result of this effort has been to obtain previously unavailable data which has led to a better understanding of sub-seafloor magmatic processes and volatile degassing and retention mechanisms in rocks. Abundances of volatiles (e. g., H2O, CO2, Cl) are obtained with a computer- interfaced high-temperature mass spectrometer which is capable of degassing samples up to 1300*C. Its basic function is the production of a molecular beam representative of the volatiles released from a heated sample and their quantitative mass analysis as a function of time and temperature. We also employ infrared and micro-Raman spectroscopy to study the siting and speciation of selected volatiles. For example, water is found to be incorporated in volcanic glasses both as molecular (H2O) water and hydroxyl (OH-) water bound as complexes with various cations.

Representative Publications

  • Chio, Chi Hong; Sharma, Shiv K.; Muenow, David W. The hydrates and deuterates of ferrous sulfate (FeSO4): a Raman spectroscopic study. Journal of Raman Spectroscopy 2007, 38, 87-99.
  • Chio, Chi Hong; Sharma, Shiv K.; Muenow, David W. Micro-Raman studies of hydrous ferrous sulfates and jarosites. Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy 2005, 61A, 2428-2433.
  • Chio, Chi Hong; Sharma, Shiv K.; Muenow, David W. Micro-Raman studies of gypsum in the temperature range between 9 K and 373 K. American Mineralogist 2004, 89, 390-395.