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Projects
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Goal: To investigate and quantify the sources contributing to atmospheric mercury deposition at four receptor sites in Illinois.
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Goal: To address the recommendations to States by USEPA regarding Mercury Reduction Programs, including: 1) identification of the potential air emission sources or source categories contributing to local and regional atmospheric mercury deposition, as well as, 2) the support of long-term atmospheric mercury monitoring networks, in Michigan.
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The ability to raise mink in captivity makes them a particularly useful model in toxicology as quantitative exposure-response relationships can be derived. In 2004 our research team carried out a large-scale, methylmercury and selenomethionine feeding experiment on 96 captive mink at the Nova Scotia Agricultural College (Truro, Canada). Juvenile mink were exposed to ecologically relevant concentrations.. >> more
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Developing the analytical and measurement techniques necessary to estimate the atmospheric loading of mercury to sensitive, aquatic ecosystems.
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In a series of experiments on free-ranging wildlife we found significant correlations between the concentrations of brain mercury and levels/activities of several neurochemical receptors/enzymes. We have collected evidence from wild mink, river otters, common loons, bald eagles, and polar bears. These findings suggest that: 1) mercury is affecting neurochemical signaling in fish-eating wildlife;.. >> more
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Goal: To establish an enhanced monitoring and research field site located in areas affected by emissions from coal-fired utilities in eastern Ohio; to identify current chemical, elemental, and isotopic characteristics in the collected samples that distinguish the contribution of anthropogenic emissions from major source types, and local versus regional transport; to examine the structure and dynamics.. >> more
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The focus of this cooperative agreement is to establish an enhanced field monitoring site in eastern Ohio for investigating the impact of coal combustion on the chemistry, transport and deposition of mercury. Speciated atmospheric mercury and deposition data will be used for receptor modeling efforts to quantify the impacts of coal combustion at the site in the Ohio River Valley. The UMAQL has extensive.. >> more
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Goal: To investigate spatial gradients in the deposition of atmospheric mercury across south Florida; and to determine the sources and source locations contributing to the deposited mercury.
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Investigating the relative contribution of anthropogenic mercury emissions in Southeast Florida to the mercury burden in the Florida Everglades.
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Goal: To quantify the levels of speciated ambient Hg and Hg deposition (wet and dry) at two sites: Chicago, IL and Holland, MI; to investigate the transport, transformation and deposition of Hg from an urban source region to downwind receptor locations across southern Lake Michigan; to determine the spatial and temporal scales for speciated ambient Hg transport and chemistry downwind from an urban.. >> more
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This research program takes a holistic approach to understanding the sources and cycling of mercury in the Lake Superior Basin.
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Thousands of different chemicals are released into our environment but few risk assessment tools are available to rapidly assess their potential to cause harm. Based on the premise that neurochemical changes precede overt neurotoxicity, our main objective is: to develop, validate, and use a practical in vitro/in vivo biomarker platform to screen the early effects of high-priority emerging contaminants.. >> more
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The Normative Aging Study (NAS) is a longitudinal study of 2,280 healthy male volunteers begun in Boston in the 1960s. Beginning in 1991 with an NIEHS R01 grant to study the impact of environmental lead exposure on risk of hypertension (NIEHS R01 ES 05257; PI: Howard Hu), NAS participants were invited to undergo bone and blood lead measurements. This project and a series of successful competitive.. >> more
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Chemiresistor (CR) sensor arrays employing thiolate-monolayer-protected gold nanoparticles (MPNs) as interfacial films are being developed for the selective detection of explosives and tagants. Hexafluoro-alcohol functionalized MPNs (HFA-MPNs) are being incorporated into CR arrays because of their affinity for the nitro-aromatic functionality present in many explosives. Composite films of HFA-MPNs.. >> more
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Our group has been continually funded by the Fogarty International Center since 1996 to strengthen capacity through training and research in Environmental and Occupational Health (EOH) in the 14-nation Southern Africa Development Community (SADC) region. The major strategy for sustainable capacity building is to leverage regional strengths in South Africa to support the development of academic research.. >> more
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Groups
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Leader: Gerald Keeler (Ph.D.)
The Air Quality Laboratory (AQL) presents a unique interdisciplinary approach to solving complex environmental problems, and for investigating fundamental scientific questions and processes. Research interests include the measurement and modeling of hazardous air pollutants (HAPs), air pollution meteorology, whole ecosystem studies of the cycling of trace elements in the environment.
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Leader: Niladri Basu (Ph.D.)
The Ecotoxicology Laboratory's research lies at the interface of human, wildlife, and ecosystem health. Our mandate is to better understand how neurotoxic pollutants affect our health by using traditional and innovative techniques. An eco-translational approach is taken whereby exposure-response-susceptibility relationships are studied at multiple tiers of biological organization (test tube - laboratory.. >> more
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People from SPH
