The instrumentation used does look groundbreaking and amazingly sensitive to benzene (also other trace toxins when targeted), calibration with known reference material looks excellent, with good correlation to established GC-MS, but there may not be complete data on possible false positive responses compared to GC-MS.

I've been a fan of Cavity Ring-Down for a couple decades, this demo might help bring the technique into some mainstream laboratories.

Wouldn't mind one of their units on the bench myself.

Also people should be aware benzene is a natural hydrocarbon found in various percentage amounts in oil reservoirs, much more present in the produced crude oil than the crude natual gas, but also often present in small amounts within the refined propane, butane, and other liquified petroleum gas products.

Mainly benzene is also present in almost all gasoline, but limited to 0.5% by volume since the clean air act of 1990.

The same news outlet that called East Palestine a "controlled burn" now wants me to worry about incomplete combustion products from gas stoves... seriously?

https://www.npr.org/2023/02/08/1155570564/east-palestine-ohi...