Optimization of desorption conditions, the conditions chosen were therefore 270 ◦C and 10 min. Effect of the extraction temperature, the influence of temperature was evaluated starting from values near ambient temperature, since the more volatile compounds can already be extracted at such temperatures, while certain pesticides can undergo thermal decomposition at higher temperatures. The extractions were performed at 30, 70 and 100 ◦C. The majority of pesticides showed a signal enhancement at temperatures up to 70 ◦C, indicating that increasing the temperature favored the mass transfer of the analytes from the matrix to the solution and from there to the fiber. Temperatures above 70 ◦C favored the volatilization of the organophosphorus compounds, thereby removing them from the liquid phase. It was also observed that carbofuran underwent thermal decomposition above 70 ◦C.