Table 1.

Comparison of developed electrochemical sensors for chlorpyrifos with its limit of detection.

Nanomaterials	Method	Limit of detection (LOD)	References
ZnS nanoparticle	Amperometry	1.5–40 × 10−9 M	26
Single walled carbon nanotubes	Voltammetry	1 × 10−12 M	33
Exfoliated graphite nanoPlatelet (xGnPs)–chitosan cross-linked composite	Voltammetry	1.58 × 10−10 M	34
ZrO2/RGO	Amperometry	10−13 M	25
Single layer graphene FET	Electrical transport	10−15 M	Present study