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      Desarrollo y validación de un método analítico para la detección y cuantificación de plaguicidas organoclorados en grasa de ganado porcino con un sistema GC/PTV/EI/MS² Translated title: Development and validation of an analytical method for the detection and quantification of organochlorine pesticides in pork fat with a GC/PTV/EI/MS² system

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          Abstract

          Se desarrolló un método empleando un sistema de cromatografía gaseosa-espectrometría de masas, de acuerdo con los requisitos de la NMX-EC-17025-IMNC-2006/ISO/IEC17025:2005 y la decisión de la Comisión 2002/657/EC, para la medición de plaguicidas organoclorados en grasa de ganado porcino: α-BHC, γ-BHC (lindano), β-BHC, δ-BHC, heptacloro, aldrín, heptacloro epóxido, γ-clordano, α-clordano, endosulfán I, p,p'-DDE, diedrín, endrín, endosulfán II, p,p'-DDD, endrín aldehido, p,p'-DDT, endosulfán sulfato, metoxicloro y mirex, con el fin de proponer una alternativa tecnológica para la determinación de la NOM-021-ZOO-1995, y dar cumplimiento a la NOM-004-ZOO-1994. La optimización en la selección del ion precursor de cada plaguicida se realizó variando la presión en la trampa de iones para incrementar las señales de los iones producto, logrando mediciones por MS² con sensibilidad superior a los detectores de captura electrónica (ECD). Los límites de decisión (CCα) y capacidad de detección (CCβ), cumplen con los límites máximos de residuos (MRL) para ambas regulaciones con r > 0.990 y recuperaciones entre 70-110%.

          Translated abstract

          A capillary gas chromatography/mass spectrometry method was developed based on the requirements of the NMX-EC-17025-IMNC-2006/ISO/IEC17025:2005 and the Commission Decision 2002/657/EC in what regards to organochlorine pesticides measurement in swinish livestock fat: α-BHC, γ-BHC (lindane), β-BHC, δ-BHC, heptachlor, aldrin, heptachlor epoxide, γ-chlordane, α-chlordane, endosulfan I, p,p'-DDE, dieldrin, endrin, endosulfan II, p,p'-DDD, endrin aldehyde, p,p'-DDT, endosulfan sulfate, methoxychlor and mirex, in order to suggest a technological alternative that the NOM-021-ZOO-1995 may determine, and fulfill the NOM-004-ZOO-1994. The optimization in the selection of the precursor ion for each pesticide was done changing the pressure in the ion trap increasing the ions product signals, and achieving MS² measurements with higher sensitivity that overcome to electronic capture detectors (ECD). The decision limit CCα and detection capability CCβ fulfilled the maximum residue limits (MRL) for both regulations with r > 0.990 and recoveries between 70-110%.

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          Most cited references30

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          Analysis of acetamiprid in vegetables using gas chromatography-tandem mass spectrometry.

          A new analytical method has been validated for determining the insecticide acetamiprid in vegetables using gas chromatography (OC) and different mass spectrometric detection techniques, such as full-scan mass spectrometry (MS), and tandem mass spectrometry (MS/MS). For this purpose, a previous extraction of the vegetable sample was carried out with ethyl acetate. In GC-MS/MS, the lowest detectable concentration was 0.001 mg kg(-1), the average recovery rates at various fortification levels (0.015 and 0.030 mg kg(-1)) ranged between 82.4 and 85.7% and the relative standard deviations were lower than 12.2% in all cases.
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            The Certainty of Uncertainty

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              Analytical Chemistry Laboratory Guidebook. Residue chemistry

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                Author and article information

                Journal
                vetmex
                Veterinaria México
                Vet. Méx
                Facultad de Medicina Veterinaria y Zootecnia, UNAM (México, DF, Mexico )
                0301-5092
                June 2011
                : 42
                : 2
                : 101-113
                Affiliations
                [01] Mexicali Baja California orgnameUniversidad Autónoma de Baja California orgdiv1Instituto de Investigaciones en Ciencias Veterinarias orgdiv2Laboratorio de Toxicología Analítica México
                [02] Tijuana Baja California orgnameUniversidad Autónoma de Baja California orgdiv1Facultad de Ciencias Químicas e Ingeniería orgdiv2Laboratorio de Análisis Instrumental México
                Article
                S0301-50922011000200001 S0301-5092(11)04200200001
                7ef7ca8b-e675-478f-b814-140f803d9fba

                This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License.

                History
                : 07 July 2010
                : 16 December 2010
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 13
                Product

                SciELO Mexico

                Categories
                Artículos científicos

                Porcine fat,trampa de iones,plaguicidas organoclorados,GC/PTV/EI/MS²,método analítico,ion trap,organochlorine pesticides,analytical method,Grasa de porcino

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