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Abstract:

A simple and sensitive HPLC post-derivatization method with colorimetric detection has been developed for the determination of N-nitroso glyphosate in samples of technical glyphosate. Separation of the analyte was accomplished using an anionic exchange resin (2.50 mm × 4.00 mm i.d., 15 μm particle size, functional group: quaternary ammonium salt) with Na2SO4 0.0075 M (pH 11.5) (flow rate: 1.0 mL min-1) as mobile phase. After separation, the eluate was derivatized with a colorimetric reagent containing sulfanilamide 0.3% (w/v), [N-(1-naphtil)ethilendiamine] 0.03% (w/v) and HCl 4.5 M in a thermostatized bath at 95 °C. Detection was performed at 546 nm. All stages of the analytical procedure were optimized taking into account the concept of analytical minimalism: less operation times and costs; lower sample, reagents and energy consumption and minimal waste. The limit of detection (k = 3) calculated for 10 blank replicates was 0.04 mg L-1 (0.8 mg kg-1) in the solid sample which is lower than the maximum tolerable accepted by the Food and Agriculture Organization of the United Nations. © 2007 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:A simplified approach to the determination of N-nitroso glyphosate in technical glyphosate using HPLC with post-derivatization and colorimetric detection
Autor:Kim, M.; Stripeikis, J.; Iñón, F.; Tudino, M.
Filiación:Laboratorio de Análisis de Trazas, Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Glyphosate; HPLC with post-derivatization; N-nitrosoglyphosate; Colorimetry; Energy utilization; High performance liquid chromatography; Ion exchange; Particle size; Glyphosate; N-nitrosoglyphosate; Post-derivatization; Nitrogen compounds
Año:2007
Volumen:72
Número:3
Página de inicio:1054
Página de fin:1058
DOI: http://dx.doi.org/10.1016/j.talanta.2006.12.047
Título revista:Talanta
Título revista abreviado:Talanta
ISSN:00399140
CODEN:TLNTA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00399140_v72_n3_p1054_Kim

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Citas:

---------- APA ----------
Kim, M., Stripeikis, J., Iñón, F. & Tudino, M. (2007) . A simplified approach to the determination of N-nitroso glyphosate in technical glyphosate using HPLC with post-derivatization and colorimetric detection. Talanta, 72(3), 1054-1058.
http://dx.doi.org/10.1016/j.talanta.2006.12.047
---------- CHICAGO ----------
Kim, M., Stripeikis, J., Iñón, F., Tudino, M. "A simplified approach to the determination of N-nitroso glyphosate in technical glyphosate using HPLC with post-derivatization and colorimetric detection" . Talanta 72, no. 3 (2007) : 1054-1058.
http://dx.doi.org/10.1016/j.talanta.2006.12.047
---------- MLA ----------
Kim, M., Stripeikis, J., Iñón, F., Tudino, M. "A simplified approach to the determination of N-nitroso glyphosate in technical glyphosate using HPLC with post-derivatization and colorimetric detection" . Talanta, vol. 72, no. 3, 2007, pp. 1054-1058.
http://dx.doi.org/10.1016/j.talanta.2006.12.047
---------- VANCOUVER ----------
Kim, M., Stripeikis, J., Iñón, F., Tudino, M. A simplified approach to the determination of N-nitroso glyphosate in technical glyphosate using HPLC with post-derivatization and colorimetric detection. Talanta. 2007;72(3):1054-1058.
http://dx.doi.org/10.1016/j.talanta.2006.12.047