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Química Nova

Print version ISSN 0100-4042

Abstract

MARTHE, Deyse de Brito; BITTENCOURT, Leila Moreira; QUEIROZ, Maria Eliana Lopes Ribeiro de  and  NEVES, Antônio Augusto. Development of a metodology for analysis of pyrethroids in butter. Quím. Nova [online]. 2010, vol.33, n.6, pp.1389-1393. ISSN 0100-4042.  https://doi.org/10.1590/S0100-40422010000600030.

The objective of this study was to evaluate the use of the matrix solid-phase dispersion technique associated with purification at low temperature for the determination of pyrethroids in butter. Evaluated parameters included: sample/adsorbent ratio, type of adsorbent and extractor solvent. The optimized method was validated based on predetermined requirements. The detection limits of the pyrethroids cypermethrin and deltamethrin were 0.082 and 0.11 μg g-1, and quantification limit were 0.28 and 0.32 μg g-1, respectively, with extraction percentages near 90% and coefficients of variation less than of 10%..

Keywords : pyrethroid; butter; gas chromatography.

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