The identification of capsaicinoids in tear-gas spray.
"Natural" capsaicin has been identified in "Halt!" sprays by thin-layer chromatography (TLC), high performance liquid chromatography (HPLC), infrared spectrophotometry (IR), and gas chromatography/mass spectrometry (GC/MS). Individual capsaicinoids have been identified as capsaicin, dihydrocapsaicin, and nordihydrocapsaicin. The recommended analytical procedure for small samples is HPLC followed by GC/MS. The alternative procedure of solvent extraction and preparation TLC followed by IR is recommended for large samples.
D002211:Capsaicin / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D005231:Fatty Acids, Unsaturated / Q000032:analysis*; D013058:Mass Spectrometry; D013055:Spectrophotometry, Infrared; D013665:Tear Gases / Q000032:analysis*
D005231:Fatty Acids, Unsaturated; D013665:Tear Gases; D002211:Capsaicin