From the studied compounds, only lambda-cyhalothrin presented results higher than the acceptable for recovery and RSD and the main factor that can explain these results are that changes in injector, liner and chromatographic column deposition of co-extractives are more intense due to late retention of lambda-cyhalothrin, increasing background effect, reflecting in low signal and poor linearity (r2 = 0.95), which may have resulted in the high recovery values obtained, even with the use of matrix matched calibration standards.