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Division of Natural Sciences & MathematicsDepartment of Chemistry & Biochemistry

Chemistry and Biochemistry

Environmental Chemistry

Huffman Group

The research of the Huffman lab focuses on analytical and atmospheric chemistry, emphasizing the development and application of new scientific approaches to addressing environmental problems.  Most of this work involves atmospheric aerosols (small particles suspended in the air) from both field and lab perspectives.  Atmospheric aerosols can either be natural or anthropogenic (human-caused) in source and can: severely reduce sky visibility, influence the Earth's radiative balance (climate forcing) directly or through affecting cloud formation,  damage ecosystems via deposition of toxic chemical species, and affect human health through respiratory, cardiovascular, and allergenic diseases.  Our work involves: (1) development and improvement of advanced analytical techniques providing better tools for the study of atmospheric aerosols, (2) characterization of particles generated in the laboratory in order to better understand physical and chemical properties that influence atmospheric effects and human health, and (3) collection and analysis of field samples from all over the globe to directly measure particles from the natural environment.

Click on the picture below to see a video of his research or see his research group homepage.

Huffman research group

Majestic Group

The research interests in the Majestic lab focus around atmospheric particulate matter (PM). He is presently interested in understanding transformations of transition metals in atmospheric systems.   Currently, we are studying oxidation state and speciation changes of iron as it is processed in cloud water and upon interaction with "urban" gases, such as sulfur dioxide. In addition, he is interested in better quantifying human exposure of atmospheric metals. Therefore, he is involved in field studies in and around the Denver area, the American Southwest, and China. The work done in his lab has implications near and far: on how to understand the human health effects of atmospheric metals to providing insights into the global iron cycle. Hi primary tools of measurement include inductively coupled plasma mass spectrometry (ICP-MS) and long pathlength UV-vis spectrophotometry.

Miller Group

Update in progress