title: Rapid and sensitive determination of 4-nitrophenol, 3-methyl-4-nitrophenol, 4,6-dinitro-o-cresol, parathion-methyl, fenitrothion, and parathion-ethyl by liquid chromatography with electrochemical detection.
abstract: Liquid chromatography with electrochemical detection has been used to determine various nitropesticides, DNOC, fenitrothion, and parathion (methyl and ethyl), and some of their main metabolites, 4-nitrophenol for parathion (methyl and ethyl) and 3-methyl-4-nitrophenol for fenitrothion, by using indirect detection. Analysis of them in river water samples has been performed without a preconcentration step. The recovery efficiencies of the tested compounds yielded values between 96 and 112% at the fortification level of 0.5 ppb in a river water sample, and their relative standard deviations were between 1 and 15%. The detection limits of these compounds ranged between 0.05 and 0.14 ppb.
authors.affiliation: Department of Analytical Chemistry, University of Extremadura, Avenida Elvas s/n, 06071 Badajoz, Spain. tgaleano@unex.es
authors.forename: T
authors.initials: T
authors.lastname: Galeano-Díaz
authors.forename: A
authors.initials: A
authors.lastname: Guiberteau-Cabanillas
authors.forename: N
authors.initials: N
authors.lastname: Mora-Díez
authors.forename: P
authors.initials: P
authors.lastname: Parrilla-Vázquez
authors.forename: F
authors.initials: F
authors.lastname: Salinas-López
mesh_terms: D002851:Chromatography, High Pressure Liquid; D003408:Cresols / Q000032:analysis*; D004138:Dinitrocresols; D004140:Dinitrophenols / Q000032:analysis*; D004563:Electrochemistry; D005278:Fenitrothion / Q000032:analysis*; D007202:Indicators and Reagents; D007306:Insecticides / Q000032:analysis*; D008743:Methyl Parathion / Q000032:analysis*; D009596:Nitrophenols / Q000032:analysis*; D010278:Parathion / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D003408:Cresols; D004138:Dinitrocresols; D004140:Dinitrophenols; D007202:Indicators and Reagents; D007306:Insecticides; D009596:Nitrophenols; D010575:Pesticides; C024132:4,6-dinitro-o-cresol; C008636:4-nitro-3-cresol; D008743:Methyl Parathion; D010278:Parathion; D005278:Fenitrothion; C024836:4-nitrophenol