pesticides in different samples such as water and vegetables samples[41].Graphs were constructed with the relative response on the y axis and the corresponding concentrations in logarithmic scale on the x axis, as suggested Huber[42]to verify that all used points are with in the corresponding linear dynamic range. These graphs (Figs. 3–6)showed that the method is linear within the response range of 95 to 105% and it is within the linear range for all pesticides studied. Thepoints found to be outside the linear range of 95 to 105% were excluded from the analytical curve