The article discusses different ways to measure toxic gases released when plastics or other materials burn. Gas detector tubes quickly detect suspect gases, while infrared spectroscopy is good for identifying some toxic gases. Gas chromatography can accurately measure gases like carbon monoxide and methane. For highly toxic gases, a scrubbing solution is used for analysis. Toxic organic vapors can be concentrated and analyzed using gas chromatography and mass spectrometry. The article talks about the strengths and limitations of these methods.