Table 2: Evaluation of intraday and interday precision and accuracy.

ZMT taken (μg mL−1)Intraday ( )Interday ( )
ZMT founda (μg mL−1)%RSDb%REcZMT founda (μg mL−1)%RSDb%REc

20.019.701.451.4919.681.661.61
40.040.710.831.7840.730.891.84
60.060.611.221.0260.721.551.21

aMean value of five determinations; brelative standard deviation (%); crelative error (%).