01444naa a2200229 a 450000100080000000500110000800800410001902400350006010000180009524501190011326000090023252007750024165000170101665000220103365000090105565000180106465000080108265300240109070000260111470000210114077300530116110488512023-03-15       2009    bl uuuu     u00u1 u    #d7 a10.1365/s10337-009-0953-y2DOI1 aMACEDO, A. N.  aMatrix solid-phase dispersion extraction for analysis of cypermethrin residue in cows milk.h[electronic resource]  c2009  aA method of extraction based on matrix solid-phase dispersion has been developed, optimized, and validated by chromatographic analysis of cypermethrin pesticide residues in samples of cows? milk. Milk (0.25 g) was fortified with cypermethrin and blended with 1 g each of C18 (octadecylsilane) silica and Na2SO4 (anhydrous sodium sulfate), used to trap fats and water, respectively. The homogenized material was transferred to a commercial SPE cartridge containing 1 g activated Florisil with 5 mL acetonitrile. Cypermethrin was eluted under vacuum with 5 × 2 mL acetonitrile and the extract was concentrated to 1 mL and analyzed by gas chromatography?mass spectrometry. The limits of detection and quantification of the method were 0.025 and 0.08 mg kg?1, respectively.  acypermethrin  amass spectrometry  amilk  aCromatografia  aGas  aChromatographia gas1 aNOGUEIRA, A. R. de A.1 aBRONDI, S. H. G.  tChromatographiagv. 69, n.5-6, p. 571-573, 2009.