title: Presence of polycyclic aromatic hydrocarbons (PAHs) in apple in rural terrains from Mexico City.
abstract: This paper describes PAH concentrations in apple crops that are growing in rural terrains in Mexico City. The concentrations of individual PAHs showed great variability, there being low and high molecular weight compounds in dry (high molecular weight for Tlahuac 7.06 microg/g and Milpa Alta 3.96 microg/g) and wet months (high molecular weight for Tlahuac 11.25 microg/g and Milpa Alta 12.05 microg/g). Some PAHs indicators and cross plot ratios Ant/(Ant + Phe) and Flu/(Flu + Pyr) define fossil fuels and vegetation combustion as the source of contamination over the cuticle of the apples. It is likely that deposition (dry and wet) is the principal source o f contamination over the apple surface. This study reveals the presence of PAHs in apples due to the high air contamination of Mexico City.
authors.affiliation: Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana Unidad Xochimilco, México D.F., Mexico.
authors.forename: Rutilio Ortiz
authors.initials: RO
authors.lastname: Salinas
authors.forename: Gilberto Díaz
authors.initials: GD
authors.lastname: González
authors.forename: Beatriz Schettino
authors.initials: BS
authors.lastname: Bermudez
authors.forename: Rey Gutiérrez
authors.initials: RG
authors.lastname: Tolentino
authors.forename: Salvador
authors.initials: S
authors.lastname: Vega Y León
mesh_terms: D000383:Agriculture; D000393:Air Pollutants / Q000032:analysis*; D004784:Environmental Monitoring; D005506:Food Contamination / Q000032:analysis*; D027845:Malus / Q000737:chemistry*; D008800:Mexico; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D011084:Polycyclic Aromatic Hydrocarbons