response for the studied fungicides and matrices was evaluated
in the present work. To determine if there is a different response
between matrix-matched standards (grapes, tomato, wine) and
standards in solvent, comparison of the slopes (b) of calibration
curves (Table 1) from matrix-matched standards to those in solvent was made using the Student’s t-test according to Zar [24].
The statistical test equation is
t = b1 − b2
sb1−b2