Let's Talk Chemistry- a science podcast by ChemTalk · The ChemTalk Team

Episode 62: Dr. Bruce McCord on the Chemistry behind Crime Scene Investigations

October 26, 2025·26 min·5 clips

Dr. Bruce McCord visits Let's Talk Chemistry for a conversation about forensic chemistry. The hosts introduce him as a Professor of Analytical and Forensic Chemistry at Florida International University. They also spend time on the less expected parts of his path, including time in the Bahamas and work with the FBI. McCord explains that his career has centered on building methods that help investigators solve real cases. A major thread of the episode is DNA analysis. He describes how his lab worked on speeding up DNA amplification so results could arrive fast enough to matter in a crime-scene setting. The discussion gives a concrete example of that progress, moving from roughly 90 minutes down to about seven minutes. That shift makes the whole workflow much more practical. The hosts pause on that point and connect it to the larger goal of making science useful in the field. The episode then moves into drug detection. McCord explains why very low-level detection matters in cases involving illegal drugs and drug-facilitated sexual assault. He outlines an early method that used a fluorescent tag on the drug. That approach could help detect tiny amounts, but only for certain drugs. Because of that limit, the work moved toward a different surface-enhanced spectroscopy technique. The episode frames that technique as another example of chemistry becoming a practical investigative aid. The hosts keep circling back to the idea that fast, reliable methods can change what is possible in the field. They also leave room for the broader human side of science careers. McCord’s story shows that research, teaching, and law-enforcement-adjacent work can overlap in unexpected ways. The episode closes by stressing the value of research experience for graduate students. It also highlights the importance of diverse lab teams and the everyday skills that support good science.

As heard by us

A grounded look at forensic chemistry, with DNA and drug detection framed in practical terms.

The episode follows Dr. Bruce McCord through forensic chemistry in a way that feels grounded rather than showy. His work touches DNA analysis, explosive detection, and drug analysis, and the discussion keeps circling back to how those methods help investigators and forensic labs…

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Why you'd press play

You want forensic chemistry explained without the lecture hall haze.

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