title: Producing a sulfamethazine quality control material under the framework of ISO/CD Guide 80.
abstract: The increasing use of antimicrobial agents such as sulfonamides by the pig industry is of concern, since residues in both pork and its by-products, when derived from animals treated improperly, can endanger human health. The aim of this study was to establish the production conditions and to evaluate the homogeneity and the stability of sulfamethazine in porcine liver quality control material, produced 'in-house' for use in ring tests of the laboratory network of residues and contaminants of the Ministry of Agriculture, Livestock and Food Supply, Brazil. In the process of preparing the material, a FOSS blender was used, where the samples were ground to obtain a homogeneous mass, which was packed in polypropylene bottles. The material resulting from this process of homogenisation was sampled and analysed by LC/MS/MS. The analytical results were statistically evaluated by one-way ANOVA. According to statistical evaluation, the material produced was considered homogeneous, with 95% confidence. Stability tests were performed with the bottles stored under the specified storage conditions. They were randomly selected and analysed in duplicate by the same analytical method as the homogeneity study. The analytical results were statistically evaluated by the procedures for a stability check described in ISO 13528:2005, indicating that the material was unstable under the conditions of storage.
authors.affiliation: Ministério da Agricultura, Pecuária e Abastecimento - MAPA Laboratório Nacional Agropecuário de Minas Gerais - LANAGRO/MG, Av. Rômulo Joviano, s/n° Cx. Postal 35, 50 CEP.: 33600-000 Pedro Leopoldo/Minas Gerais, Brazil.
authors.forename: A L
authors.initials: AL
authors.lastname: Cunha
authors.forename: P F
authors.initials: PF
authors.lastname: Silva
authors.forename: E A
authors.initials: EA
authors.lastname: Souza
authors.forename: J R A M
authors.initials: JR
authors.lastname: Júnior
authors.forename: F A
authors.initials: FA
authors.lastname: Santos
authors.forename: E A
authors.initials: EA
authors.lastname: Vargas
mesh_terms: D000818:Animals; D000890:Anti-Infective Agents / Q000032:analysis* / Q000592:standards; D001938:Brazil; D002853:Chromatography, Liquid; D004350:Drug Residues / Q000032:analysis / Q000592:standards; D005506:Food Contamination / Q000032:analysis* / Q000331:legislation & jurisprudence / Q000517:prevention & control / Q000706:statistics & numerical data; D059022:Food Safety; D006801:Humans; D008099:Liver / Q000737:chemistry; D008460:Meat / Q000032:analysis; D011786:Quality Control; D012015:Reference Standards; D013418:Sulfamethazine / Q000032:analysis* / Q000592:standards; D034421:Sus scrofa; D053719:Tandem Mass Spectrometry; D019155:Veterinary Drugs / Q000032:analysis / Q000592:standards
chemical_list: D000890:Anti-Infective Agents; D019155:Veterinary Drugs; D013418:Sulfamethazine