Synchrotron technique promising for tracing metals in nature
University of Saskatchewan (USask) and Environment and Climate Change Canada (ECCC) researchers have mapped metals in bird feathers, a technique that could help make environmental monitoring less destructive.
In a recent paper published in X-ray Spectrometry, researchers used the Canadian Light Source (CLS) synchrotron at USask to examine the level and distribution of zinc in feathers from birds that were fed high-zinc diets.
“The same technique could be applied to toxic metals like mercury, even at low concentrations,” says Agriculture and Agri-Food Canada scientist Fardausi Akhter. “You could just take a feather from the bird and be able to show if it was exposed to toxic metals present in the environment.”
Akhter, a toxicologist interested in applying synchrotron techniques to environmental questions, first started working on this project with Graham Fairhurst, a USask avian ecophysiologist, when they were both working as postdocs supervised by Catherine Soos. Soos is a wildlife health specialist and research scientist at ECCC, and adjunct professor at USask (Department of Veterinary Pathology, Western College of Veterinary Medicine), whose research focuses on investigating impacts of large-scale environmental changes on wildlife health. Her team often uses feathers as tools to evaluate exposure to toxic metals, and impacts of exposure on health of wild birds.
Image: Part of the research team at CLS (left to right): Fardausi (Shathi) Akhter, Jamille McLeod (ECCC), Bruce Pauli (ECCC), Peter Blanchard (CLS), Landon McPhee (ECCC), and Catherine Soos (ECCC)