title: Determination of perchlorate in tobacco plants and tobacco products.
abstract: Previous field and laboratory studies with vascular plants have shown that perchlorate is transported from perchlorate fortified soils and is accumulated in the plant tissues and organs. This paper contains results of preliminary investigations on the occurrence of perchlorate in tobacco plants grown in soils amended with a fertilizer whose nitrogen content is derived from naturally occurring sodium nitrate (Chile saltpeter). Ion chromatography (IC) and capillary electrophoresis (CE) were used for quantitative analysis, while nuclear magnetic resonance (NMR) spectroscopy was used for qualitative analysis of perchlorate. Results show that perchlorate is accumulated by tobacco plants into the leaves from soils amended with fertilizers that contain perchlorate. Also, perchlorate can persist over an extended period of time and under a variety of industrial processes as shown by its presence in off-the-shelf tobacco products including cigarettes, cigars, and pouch and plug chewing tobaccos in concentrations ranging from nd to 60.4 +/- 0.8 mg/kg on a wet weight basis.
authors.affiliation: United States Environmental Protection Agency, National Exposure Research Laboratory, Athens, Georgia 30605, USA. ellington.jackson@epa.gov
authors.forename: J J
authors.initials: JJ
authors.lastname: Ellington
authors.forename: N L
authors.initials: NL
authors.lastname: Wolfe
authors.forename: A W
authors.initials: AW
authors.lastname: Garrison
authors.forename: J J
authors.initials: JJ
authors.lastname: Evans
authors.forename: J K
authors.initials: JK
authors.lastname: Avants
authors.forename: Q
authors.initials: Q
authors.lastname: Teng
mesh_terms: D002852:Chromatography, Ion Exchange; D019075:Electrophoresis, Capillary; D005308:Fertilizers; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D010472:Perchlorates / Q000032:analysis* / Q000493:pharmacokinetics; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000502:physiology; D017670:Sodium Compounds / Q000032:analysis* / Q000493:pharmacokinetics; D012989:Soil Pollutants / Q000032:analysis* / Q000493:pharmacokinetics; D014026:Nicotiana / Q000737:chemistry*
chemical_list: D005308:Fertilizers; D010472:Perchlorates; D017670:Sodium Compounds; D012989:Soil Pollutants; C031068:sodium perchlorate