title: Determination of phytohormones of environmental impact by capillary zone electrophoresis.
abstract: A test mixture of five phytohormones [naphthaleneacetic acid (NAA), naphthoxyacetic acid (NOA), indoleacetic acid (IAA), indolebutyric acid (IBA), and indolepropionic acid (IPA)] was investigated. These compounds were cleanly separated with good resolution by capillary zone electrophoresis with a UV diode array detector using 20 mM sodium phosphate buffer (pH 7.25). The lowest detection limit was obtained for IPA (0.45 mg L(-)(1) or 0.005 mg kg(-)(1)) and the highest for NAA (1.04 mg L(-)(1) or 0.014 mg kg(-)(1)). The method has been applied for tomato samples fortified with the five phytohormones using a liquid-liquid extraction procedure, obtaining recovery percentages ranging from 91 to 109.0%.
authors.affiliation: Department of Analytical Chemistry, Faculty of Science, University of Granada, Granada, Spain. ansegura@urg.es
authors.forename: A
authors.initials: A
authors.lastname: Segura Carretero
authors.forename: C
authors.initials: C
authors.lastname: Cruces-Blanco
authors.forename: M
authors.initials: M
authors.lastname: Soriano Peña
authors.forename: S
authors.initials: S
authors.lastname: Cortacero Ramírez
authors.forename: A
authors.initials: A
authors.lastname: Fernández Gutiérrez
mesh_terms: D000383:Agriculture; D019075:Electrophoresis, Capillary; D006863:Hydrogen-Ion Concentration; D018551:Solanum lycopersicum / Q000737:chemistry; D010937:Plant Growth Regulators / Q000032:analysis*; D012680:Sensitivity and Specificity
chemical_list: D010937:Plant Growth Regulators