Table 2.

Linearity and detection limits of various AA detection methods: Reprinted with permission from [66]. Copyright 2016 Institute of Physics.

Method	Substrate/Sensing Layer	Linearity (M)	LOD (M)	Ref.
Electrochemical	DMF exfoliated grapheme	4 × 10−4–6 × 10−3	1.2 × 10−4	[167]
Electrochemical	MIP polypyrrole/pencil graphite electrode	2.7 × 10−4–7 × 10−3	7.4 × 10−5	[168]
Electrochemical	MIP PANI/ITO	5 × 10−5–4 × 10−4	1.8 × 10−5	[169]
Electrochemical	Nitrogen doped porous carbon nanopolyhedra	8 × 10−5–2 × 10−3	7.4 × 10−7	[170]
Electrochemical	Ferricyanide/calcium carbonate microsphere	1 × 10−6–2.1 × 10−3	7 × 10−7	[171]
Colorimetric	Ag Nps/artificial neutral network	2 × 10−6–4.8 × 10−5	6.2 × 10−7	[172]
Electrochemical	Reduced graphene oxide-ZnS nanocomposite	5 × 10−5–1 × 10−3	3 × 10−7	[173]
Electrochemical	Graphene-MWCNT nanocomposite/Au nanoclusters	1 × 10−5–1.5 × 10−4	2.7 × 10−7	[174]
Fluorescence	Protein modified Au nanoclusters	1.5 × 10−6–1 × 10−5	2 × 10−7	[175]
Colorimetric	Pholocatalytic Ag Nps	2.5 × 10−7–5 × 10−5	7.92 × 10−10	[176]
Optical (SPR)	Fiber optic core/Ag/PANI MIP	1 × 10−8–1 × 10−7	1.28 × 10−10	[166]
Optical (LSPR)	Fiber optic core/PANI-Ag MIP	1 × 10−8–1 × 10−6	1.12 × 10−10	[66]
Optical (LSPR + SPR)	Fiber optic core/Ag/PANI-Ag MIP	1 × 10−8–1 × 10−6	7.38 × 10−11	[66]