Table 1. Comparison of linear range and detection limit of some modified electrodes materials.

Sensors	Linear range (ng mL−1)	Detection limit (ng mL−1)	Ref
Au/PDDA-EGO	1.0 × 10−1 to 200	5.0 × 10−2	29
Au/CS-PBGS	5.0 × 10−3 to 50	1.0 × 10−3	30
GNP-Thi-GS	1.0 × 10−2 to 0.5	4.0 × 10−3	31
Au-IL-GS	1.0 × 10−6 to 100	1.0 × 10−7	32
PPy hydrogel/Au	1.0 × 10−6 to 200	1.6 × 10−7	This work