Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2006.1411.1415AbdiKh. VossoghiM. HeidariM. R.Kazemi-ZarkueiK. MandegaryA. 8200698A study was conducted to develop method for the separation and quantification of four active ingredients of a pesticide formulation. The sample was commercial insecticide spray, containing the ingredients: cypermethrin, di-allethrin, tetramethrin and piperonyl butoxide (PBO). The liquid-liquid extraction was done with dichloromethane. Analysis of samples was carried out by capillary gas chromatography and flame ionization detection. 4-aminoantipyrine served as an internal standard. The method demonstrated acceptable linearity, specificity, precision and accuracy. This method is recommended for using in standard and quality control centers for the purity determination of pesticide preparations formulations.]]>Abu-Qare, A.W. and M.B. Abou-Donia,200126291299Angerer, J. and A. Ritter,1997695217226Aprea, C., A. Stridori and G. Sciarra,1997695227236Cai, J., B. Liu, X. Zhu and Q. Su,2002964205211Chen, Z.M. and Y.H. Wang,1996754367395Colume, A., S. Cardenas, M. Gallego and M. Valcarcel,20019128390Diel, F., B. Horr, H. Borck, H. Savtchenko, T. Mitsche and E. Diel,1999in vitro.]]>1076574Hardt, J. and J. Angerer,20036492498Heudorf, U. and J. Angerer,2001109213217Leng, G., A. Leng, K.H. Kuhn, J. Lewalter and J. Pauluhn,19972712731283Liu, W. and J.J. Gan,200452736741Miyamoto, J., H. Kaneko, R. Tsuji and Y. Okuno,199582-83933940Otterbach, A. and W. Wenclawiak,1999365472474Shah, V.P., K.K. Midha, J.W. Findlay, H.M. Hill and J.D. Hulse et al.,20001715511557Tsuji, R., N. Isobe and H. Kawasaki,1996106131137Wang, I.H., V. Subramanian, R. Moorman, J. Burleson and J. Ko,1999864271281Wang, I.H., R. Moorman and J. Burleson,2003983145152