Research and teaching in the Anbar group reflect my diverse but intertwining interests in biogeochemistry, environmental chemistry, Earth history and astrobiology. Read more.

I'm interested in developing new applications of non-traditional stable isotopes (Mo, Fe, Sr, Cu...) to questions in Earth history, archaeology, modern environmental tracers, biomedical studies, forensics or almost anything that could provide relevant and meaningful insights into how our world works. I'm also the person who manages our trace-metal clean lab and the ICP side of our lab. Read more.

Dr. Brian Kendall specializes in sedimentary geochemistry using metal abundances and isotopic compositions and the Re-Os radioisotope system. Current research focuses on the co-evolution of environmental oxygenation, metal biogeochemical cycles, and biological evolution over time.

Analyzing mid-Proterozoic sedimentary rocks from Australia by applying organic geochemistry, analyzing both bitumen using solvent extraction and kerogen via catalytic hydropyrolysis, and inorganic geochemistry, using iron speciation, sulfur isotopes and metal concentrations and isotopes.

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I spend most of my time trying to understand the mechanisms of and find uses for ²³⁸U/²³⁵U fractionation in various materials.  Most recentently our group, paired with the Center for Meteorite Studies at ASU, is using uranium isotope fractionation to more precisely determine the age of the oldest objects in the Solar System.  We have also started trying to apply ²³⁸U/²³⁵U fractionation as a paleoredox indicator for ancient oceans...to be continued.

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I am a Ph.D. candidate in the Astrobiology laboratory. My Ph.D. resesarch is focused on molybdenum requirements for nitrogen assimilation by photoautotrophs, and the coevolution of nitrogen and metal biogeochemical cycles through Earth history. I also study a field site in beautiful northern California called Castle Lake, which has very low molybdenum in the water column and very high Mo in the sediments. I'm trying to puzzle out how Mo distribution in the lake affects the ability of the lake's biota to assimilate nitrogen.

I am using variations in mercury isotopes as a tool to study the movement and source of mercury pollution. My current research looks at mercury from compact fluorescent light bulbs to see the extent to which it is distinct from other source of mercury pollution. Ultimately, this may allow us to identify CFL mercury in the environment and to better understand the fate of the mercury contained within these bulbs.

I am also engaged in science education research, where I am working with Prof. Steve Semken. In the field of environmental science, it is certainly important to advance our understanding of the science, but it is also very important that we effectively educate students in the field as well as the general public. With that in mind, I am developing a project that will help evaluate a person's understanding of environmental science in order to better teach this important subject.

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I am a PhD. candidate in Chemistry & Biochemistry. I am interested in the relationship between metals and biology. Read more.

My current work focuses on developing molybdenum and uranium isotope proxies to enable us to better decipher the oxygenation history of Earth's atmosphere and oceans.

At the intersection between oxygen and nutrients, I  am also involved in a project to better understand nitrogen cycling in the hot springs of Yellowstone National Park using a wide variety of ¹⁵N tracer methods and in situ incubations. 

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My background includes astronomy/astrophysics and art. Here at ASU I am an Astrophysics student interested in a number of topics in the field of astrobiology. Read more.

Mitchell is a Chemistry senior who is studying uranium isotope fractionation. This year he is a NASA Space Grant recipient, and is investigating uranium fractionation during calcite formation under Dr. Achim Herrmann. Read more.

I am currently a junior at Arizona State University studying chemistry and computational mathematics. I work in the Anbar Lab Group studying Sr isotopes and the possibility of using them to fingerprint organics. Read more.

Liz McHugh is the Coordinator Senior for the ASU Astrobiology program. Prior to coming on board, she was a director at the ASU Foundation for 20 years. Liz is a native of Pittsburgh, PA, a fund raising consultant, an avid Steelers fan, and part time mosaic and bead artist. Read more.

My research involves the study of the balance of energy and multiple chemical elements (esp. C, N, and P) in living systems. Applications include trophic interactions, biogeochemistry, life history evolution, physiological and behavioral ecology, deep paleoecology (Cambrian explosion), and tumor biology. Read more.

I have a long-term interest in all things water related! I started out as an oceanographer, and my group currently investigates dissolved organic compounds in natural aquatic systems. We utilize novel mass spectrometry techniques, field and laboratory experiments to probe the biological/geological/physical processes that transform dissolved organic matter. Read more.

Our research activities focus on atmospheric chemistry, mainly aqueous phase chemistry (clouds, fogs and rain), atmospheric particulate matter and particle droplet interactions. We are also interested in the impact of particle and cloud chemistry on local, regional (public health, visibility, deposition fluxes) and global scale (effects on Earth's radiative budget). All our research relies largely on environmental analytical chemistry and involves field campaigns to collect samples and study processes in situ. Read more.

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Kelly Knudson is a faculty member in the Center for Bioarchaeological Research in the School of Human Evolution and Social Change. She uses geochemistry to investigate the movement of peoples in the past. She mostly works in Peru, Bolivia and Chile in cemeteries that date from AD 500-1500. Read more.

Everett Shock and members of his research group divide their time between building algorithms to estimate thermodynamic data; analyzing water, sediment, rock and biological samples; integrating analytical and thermodynamic data in models of geochemical and microbial processes; and testing ideas about the transport of water and solutes through the environment, the biogeochemical process of subsurface biosphere, and the potential for life on other planets. Read more.

Meenakshi Wadhwa is a cosmochemist interested in deciphering the origin and evolution of the Solar System and planetary bodies through geochemical and isotopic means. She uses high-precision mass spectrometric techniques to investigate a wide range of Solar System materials. Read more.

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The main focus of my research is the development and application of heavy stable isotopes (Mo & Fe) in conjunction with other elements and elemental ratios towards an understanding of past ocean conditions. Read more.

I've returned to Argentina and am pursuing a PhD in using O, H and Sr isotopes to trace food. Read more.

I am a junior Molecular Biosciences & Biotechnology major at Arizona State University. As a NASA Space Grant Intern, I am interested in the intersection of Life Sciences and Geosciences. Specifically, I am interested in the genetic regulation of trace metal metabolism. Read more.

Hello! I'm Yun. I'm in my last year of PhD program and expected to defend the dissertation soon! I’m broadly interested in all kinds of geological and planetary processes in the modern system and in the distant past. Specifically, I’m trying to decipher trace metals' elemental and isotopic records in ancient rocks (as early as 2.5Ga-year-old Archean rocks) wiht the hope of providing new clues to environmental evolution through time.

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Along with Natasha Zolotova, I keep the IRMS side of the lab humming. Email me with questions! Read more.

My interest is history of Earth: evolution of solid earth (e.g. initiation of plate tectonics), environmental change (e.g. seawater composition) and evolution of life through geologic time. Recently, we try to decode environmental change, which includes surface temperature, seawater composition (redox-sensitive elements and nutrients) and global carbon cycle, after the Marinoan (630 Ma) Snowball Earth to early Cambrian based on multi-isotopic and elemental analyses (proxies) of sedimentary rocks, and the influence of environmental change on the drastic evolution of life (emergence of multicellular animals, Ediacara Fauna and Metazoan around 600 Ma and Cambrian shelly biota.

In Ariel's laboratory, we analyze Mo isotopes of the Ediacaran and Early Cambrian samples in South China, and try to estimate redox condition of seawater and sufficiency of Mo in seawater for multicellular algae.

Good day.  My primary interests are the analysis of Fe isotope ratios in modern-day samples.  Specifically, I am interested in differences in Fe isotope ratios in atmospheric aerosols.  My hope is that this project may be able to help locate sources of atmospheric pollution, and also to help understand some of the fundamental mechanisms (e.g. photo-reduction of Fe(III)) of Fe red-ox chemistry on particulate matter.   

I am also hoping to delve into the fate of nanoparticles in the environment using isotope tracer studies.  More on this at a later date...

I manage light stable isotope analysis (C, H, N, O, S) in the Keck Lab. This includes method development, user training, instrument maintenance and interesting pursuits. I am also the contact person for laboratory infrastructure issues. Read more.

I am a sophomore undergraduate student assisting in research with molybdenum fractionation during its adsorption to MnOx. We are currently investigating the effects of temperature, ionic strength, and MnOx mineral types on the fractionation during adsorption. Read more.

Development and application of non-traditional stable isotope systems in combination with element and element ratio proxies for (paleo-) oceanography and a variety of applications. Read more.

'Biogeochemistry of metals' is the theme among my diverse research interests, which range from peridotite melting to ocean paleoredox, and from evolution of metal use by bacteria to medicine. Read more.

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I apply a background in molecular biology, biochemistry, and phytoplankton physiology to uncover the sequence of events that shaped the evolution of the modern oceans and phytoplankton. Read more.