Statistical parameters and precision values of the proposed SWV method using AgNPs–rGO/PBB modified electrode.

Parameters	The calculated value
Linearity range (mol L−1)	5 × 10−9 to 5 × 10−7
Intercept (μA) ± SDa	25.5 ± 2.34
Slope (μA (mol L−1)−1) ± SDb	3.64 × 109 ± 9.21 × 10−7
SSEc	50.1 × 10−8
Correlation coefficient (R)	0.9988
LODd (mol L−1)	2.17 × 10−9
LOQe (mol L−1)	6.66 × 10−9
Intra-day precisionf (% RSD, n = 3g)	≤3.45
Inter-day precisionf (% RSD, n = 3g)	≤3.96

^aStandard deviation of intercept.

^bStandard deviation of slope.

^cSum of square errors.

^dLimit of detection.

^eLimit of quantitation.

^fRelative standard deviation.

^gMean values of three measurements at three different concentration levels.