Bissacot, Denise Zuccari [UNESP]Vassilieff, Igor [UNESP]2014-05-272014-05-271997-09-01Journal of Analytical Toxicology, v. 21, n. 5, p. 397-402, 1997.0146-4760http://hdl.handle.net/11449/65176A procedure to determine residue concentrations of synthetic pyrethroid insecticides (flumethrin, deltamethrin, cypermethrin and cyhalothrin) in the milk and blood of lactating dairy cows was developed. Extraction was performed with acetonitrile, n-hexane partitioning, and silica gel column cleanup with n-hexane and diethyl ether. Analysis was carried out by high- performance liquid chromatography and ultraviolet detection. Recovery of the four pyrethroids averaged 78 to 91% with a minimum detectable concentration of 0.001 mg/kg. The method was reproducible and sensitive.397-402engcipermethrincyhalothrindeltamethrinflumethrininsecticidepyrethroidchemical analysiscowfood contaminationhigh performance liquid chromatographylactationmilknonhumanultraviolet radiationAnimalsCattleChromatography, High Pressure LiquidFemaleInsecticidesLactationMilkNitrilesPesticide ResiduesPyrethrinsReproducibility of ResultsSensitivity and SpecificitySpectrophotometry, UltravioletArtigo10.1093/jat/21.5.397WOS:A1997XU63300014Acesso restrito2-s2.0-0030852409