Troubleshooting in the Analysis of Hexachlorocyclohexane Isomers in Agar-Agar Culture Media
作者： M. Barriada-Pereira , M. J. González-Castro , S. Muniategui-Lorenzo , P. López-MahÍa , D. Prada-RodrÍguez
DOI: 10.1080/15320380701741297
关键词:
摘要: A method to determine hexachlorocyclohexane isomers (HCHs) in agar-agar culture media was developed order study the bioremediation potential of these compounds. Spiked medium samples (0.5 g) were finely chopped and then extracted with 20 ml hexane:ethyl acetate (80:20) an ultrasonic bath during 30 min analyzed by gas chromatography electron capture detection (GC-ECD). Analytical recoveries highly satisfactory, ranging between 84 101%, relative standard deviations lower than 5%. The applied evaluate stability lindane (γ -hexachlorocyclohexane, γ-HCH) (α-, β- δ -HCH) at different temperatures. Our results showed a decrease on γ- α-HCH, very important case incubation period room temperature 30°C, while losses β -HCH δ-HCH negligible.
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