Fecha/hora: 13/06/2024 01:41:07

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 25/10/2014
Fecha de la última actualización: | 03/10/2019
Autoria: | NIELL, S.; PAREJA, L.; ASTEGGIANTE, L.G.; ROEHRS, R.; PIZZUTTI, I.R.; GARCIA, C.; HEINZEN, H.; CESIO, M.V.
Afiliación: | SILVINA NIELL, Universidad de la República, Farmacognosia y Productos Naturales. Uruguay; LUCÍA PAREJA, Universidad de la República, Farmacognosia y Productos Naturales. Uruguay; LUCA GEIS ASTEGGIANTE, Universidad de la República, Farmacognosia y Productos Naturales. Uruguay; RAFAEL ROEHRS, LARP/Universidade Federal de Santa Maria, Rio Grande do Sul, Brazil.; IONARA R. PIZZUTTI, CEPARC/Universidade Federal de Santa Maria, Rio Grande do Sul, Brazil.; CLAUDIO CESAR GARCIA GALLARRETA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; HORACIO HEINZEN, Universidad de la República, Farmacognosia y Productos Naturales. Uruguay; MARA VERNICA CESIO, Universidad de la República, Farmacognosia y Productos Naturales. Uruguay.
Título: | Development of methods for multiresidue analysis of rice post-emergence herbicides in loam soil and their possible applications to soils of different composition.
Año de publicación: | 2010
Fuente/Imprenta: | Journal of AOAC International, 2010, v. 93 no.2, p. 425-431.
Descripción Física: | 2-s2.0-77952781014
ISSN: | 1060-3271
Idioma: | Inglés

Contenido:

ABSTRACT,

Two simple and straightforward sample preparation methods were developed for the multiresidue analysis of post-emergence herbicides in loam soil that are commonly used in rice crop cultivation. A number of strategic soil extraction and cleanup methods were evaluated. The instrumental analysis was performed by HPLC with a diode array detector. The best compromise between the recoveries (69-98%) and good repeatability (RSD <15%) was obtained using either methanol or methanol-ethyl acetate (70 + 30, v/v) as extraction solvents without any further cleanup. For the first time, residues of metsulfuron methyl, bensulfuron ethyl, bentazone, cyhalofop butyl, pyrazosulfuron ethyl, propanil, and clomazone were analyzed simultaneously. Quinclorac and bispyribac sodium were also assayed, but their recoveries were below 50%. Both methods had an LOD of 0.7 ?g/kg and could accurately determine the residues at the 2 ?g/kg level. These two methods could not be applied directly to other soil types as the recoveries strongly depended on the soil composition. The developed methodologies were successfully applied in monitoring 87 real-world soil samples, in which only propanil (6 to 12 ?g/kg) and clomazone (15 to 20 ?g/kg) residues could be detected.

Thesagro: | ANÁLISIS DE SUELOS; ANÁLISIS QUÍMICO; ARROZ; SUELOS.
Categoría del tema: | P33 Química y física del suelo
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (100232-1) - PXI - AP - DD - PP/AOAC Int.Jr./2010 -  -  - DIS