Development and Validation of Chronopotentiometric Method for Imidacloprid Determination in Pesticide Formulations and River Water Samples

Table 1

Linear ranges for chronopotentiometric determination of imidacloprid using thin film mercury and glassy carbon electrode.

Electrode	Concentration range [mg/L]	Reduction current [A]	Slope	Intercept
Thin film Mercury Electrode	0.8–2.0	−3.8	0.257	0.898	0.0187	0.0131	0.9989
	2.0–10.0	−6.2	0.132	0.390	0.0020	0.0195	0.9975
	10.0–30.0	−16.8	0.086	−0.280	0.0022	0.0123	0.9980
Glassy Carbon Electrode	7.0–15.0	−6.6	0.046	0.329	0.0031	0.0129	0.9976
	10.0–40.0	−14.0	0.032	0.038	0.0007	0.0012	0.9987
	40.0–70.0	−18.4	0.051	−0.730	0.0002	0.0220	0.9986

represents the standard deviation of the slope in s⋅L/mg, .
represents the standard deviation of the intercept in s, .