Bioaccessibility of Metals

Bioaccessibility of metals in powdered alloys and metal ores: Evaluation of three surrogate biofluids

BRIDGES

The BRIDGES (Biological Response Indicator Devices Gauging Environmental Stressors) bioanalytical tool provides a quantitative measure of the toxicity of environmentally relevant contaminant mixtures. It pairs passive sampling with the embryonic zebrafish developmental toxicity model to connect environmental chemical exposures to biological effects.

Defining Equine Exposures in PA and NY Using Passive Samplers

Individual mare PSDs were recovered at rates of 95% and 92% from horses on the NY and PA farms respectively, showing that this adaptation of PSDs is robust enough to withstand the equine environment.  Chemical analysis for PAHs on mare-deployed PSDs resulted in quantitative identification of 60 individual PAHs. Continued analysis of biological samples from each mare-foal pair and analysis of PSDs could reveal environmental stressors associated with this negative health outcome in a mammal model.

Feline Hyperthyroidism

For more information about feline hyperthyroidism, see the AEC’s FAQ page (http://www.animalendocrine.com/hypurrcat/faqs/).
For more information about this study, see the recruitment brochure and FAQ page. If you are interested in enrolling your cat in this study, contact Dr. Jana Gordon at the OSU Veterinary School. 541-737-4812 or Jana.Gordon@oregonstate.edu

Flame Retardants

1)    Interplay between chemical exposures (PBDEs) and home environment on gains in children’s school readiness
Collaborators: Molly Kile,Shannon Lipscomb, Megan MacDonald, Megan McClelland, and Bo Zhang
2)    An Environmental distribution of bioavailable flame retardants by passives sampling devices couple with in vivo bioassays.  Collaborator R.Tanguay

Gulf of Mexico Deepwater Horizon Oil Spill

On April 20th, 2010 a lethal explosion at the Deepwater Horizon oil drilling rig located 66 km southeast of the Louisiana coast in Mississippi Canyon Block 252, led to the largest marine oil spill in United States history. In the case of marine oil spills, such as the Deepwater Horizon spill, there is an initial, acute risk to organisms that can become covered in viscous crude as well as acute and chronic risks from exposure to toxic chemicals through air, water and food.

Hurricane Harvey and hazardous exposures

Following a disaster, we tend to be worried about finding food and shelter, reuniting with families and pets, and cleaning up the damage left behind. We don’t tend to think about toxic chemical exposures. With Hurricane Harvey, it’s a different story.

Silicone Passive Sampling Devices

In addition to using low-density polyethylene (LDPE) devices for aqueous sampling in Superfund and Gulf of Mexico projects, we have been optimizing methods and strategies for co-deploying silicone strips with LDPE since 2009.  LDPE passive samplers are great for monitoring legacy contaminants, or those typically found in contaminated sites like Superfunds such as PAHs, PCBs, and very hydrophobic pesticides like p’p-DDE and DDT.

Sweet Onion Test Kit

The kit includes the following supplies; enough for 30 tests:

United Nations Food and Agriculture Organization

The project presented here has two major elements and as a result, the objectives are twofold. The objectives of the environmental assessment component of this project are to demonstrate the utility of PSDs for broad scale assessment of bioavailable contaminants and to characterize the contaminants in agricultural systems of two major West African rivers to support future human and ecological health risk assessment, Figure 1.