Colloquium: Bone metal measurements using x-ray fluorescence techniques

Bone metal measurements using x-ray fluorescence techniques
Dr. Aaron James Specht
Purdue University

Abstract:
Metal exposures persist as a widespread problem. Blood metals are traditionally used for exposure surveillance; however, bone measured non-invasively proves to be a cheaper, more accessible, and more revealing tool for surveillance that can be measured using x-ray fluorescence techniques. In this talk, we will outline how this technology can be used and some novel iterations of the technique using both more advanced handheld L-XRF and KXRF technologies. In L-XRF, the advancements seem to focus primarily on count throughput to improve detection capabilities. KXRF, on the other hand, could offer future promises through new detectors and x-ray sources.

Bio:
Dr. Specht is an Assistant Professor in the School of Health Sciences at Purdue University. His background is in Medical and Health Physics specializing in developing exposure assessment tools in environmental health studies. Over his career, he has developed novel tools for unique exposure assessment including a handheld x-ray fluorescence device capable of non-invasively measuring lifetime Pb exposure. At his Trace Metals Laboratory at Purdue University, he uses this and similar equipment to specifically develop tools to make exposure assessment more accessible and help to inform collaborators on proper biomarker assessments in epidemiological studies.