To verify the quality and usefulness of the method, the analytical parameters linearity, sensitivity, precision and percentage of recovery were determined. To calculate the detection limit (LOD) and quantification limit (LOQ), it was used the method based on the calibration curve. LOD was evaluated on the standard deviation of the response of the blank and the slope using the ratio
3Sn-1/m, where Sn-1 is the standard deviation of the response of the blank and m is the slope of the calibration curve of the analyte.