The research interests in the Majestic lab focus around atmospheric particulate matter (PM). We are 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, we are interested in better quantifying human exposure of atmospheric metals. Therefore, we are involved in field studies in and around the Denver area, the American Southwest, and China. The work done in our lab has implications near and far: on how we understand the human health effects of atmospheric metals to providing insights into the global iron cycle. Our primary tools of measurement include inductively coupled plasma mass spectrometry (ICP-MS) and long pathlength UV-vis spectrophotometry
