title: Liquid chromatographic determination of benzo[a]pyrene in total particulate matter of cigarette smoke.
abstract: The benzo[a]pyrene (BaP) delivery of reference and commercially available tobacco cigarettes, as well as reference and placebo marijuana cigarettes, is determined using a sequential liquid chromatographic/liquid chromatographic procedure. The total particulate matter of sample cigarette smoke is collected using a Cambridge filter pad, which is ultrasonically extracted with acetone. The resulting extract is filtered, then fractionated using semipreparative-scale normal phase liquid chromatography (LC). Quantitative determination is achieved using analytical-scale reverse phase LC equipped with a fluorescence detector. The method is precise (+/- 10-15% relative standard deviation) and yields 85% or better BaP recovery at the ng/cig. level. A single pad may be analyzed in 8 person-hours, while a more typical lot of 12 pads (6 pads each for 2 cigarette brands) may be analyzed in 10 person-days.
mesh_terms: D001564:Benzo(a)pyrene / Q000032:analysis*; D002188:Cannabis / Q000032:analysis; D002853:Chromatography, Liquid; D010947:Plants, Toxic; D012906:Smoke / Q000032:analysis*; D014026:Nicotiana / Q000032:analysis*
chemical_list: D012906:Smoke; D001564:Benzo(a)pyrene