Dioxins in beef samples from Mexico using a low resolution GC/MS screening method.
Dioxins in beef were quantified by high resolution gas chromatography coupled to low-resolution mass spectrometry (GC/LRMS). The analyses were performed according to the minimum requirements described in the USEPA 1613 method with some minor modifications. Levels found in the samples were in the range 1.02-8.04 pg WHO-TEQ PCDDs/PCDFs g(-1) fat. For comparison purposes, the maximum level allowed by the European Union is 3 pg WHO-TEQ PCDDs/PCDFs g(-1) fat, and some of these samples surpassed the above-mentioned limit and can be considered as contaminated food. The results confirm that a preliminary screening of dioxins in beef can be performed by GC/LRMS. As far as we know, this is the first report of dioxins in beef in Mexico. After the appropriated tests, the applied methodology could be considered as an alternative screening method for the analysis of PCDD/Fs in other food products.
a Universidad Autónoma de Nuevo León , Facultad de Medicina, Departamento de Química Analítica , Avenida Madero y Dr. Aguirre Pequeño S/N, Col. Mitras Centro, Monterrey , Nuevo León , México.
Lidia
L
Naccha
Guadalupe
G
Alanis
Anabel
A
Torres
Esteban
E
Abad
Manuela
M
Ábalos
Josep
J
Rivera
Lorenzo
L
Heyer
Alberto
A
Morales
Noemí
N
Waksman
D000818:Animals; D001572:Benzofurans / Q000032:analysis; D002417:Cattle; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins / Q000032:analysis*; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D008452:Maximum Allowable Concentration; D008460:Meat / Q000032:analysis*; D008800:Mexico; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives / Q000032:analysis; D011786:Quality Control
D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins; D000072317:Polychlorinated Dibenzodioxins
GC/MS; TEQs; animal products; chromatography; dioxins; meat; method validation; quality assurance