Table 2. Comparison of Different Techniques for NOR Detection.
| technique | materials | LoD (μg mL–1) | detection range (μg mL–1) | references |
|---|---|---|---|---|
| electrochemical analysis | carbon nanotubes | 0.016 | 0.032–31.913 | (34) |
| ultraviolet (UV) spectrophotometry | hydrochloride acid | 0.67 | 2.0–7.0 | (35) |
| visible (VIS) spectrophotometry | hydrochloride acid | 22.05 | 90–120 | (35) |
| electrochemical analysis | glassy carbon electrode | 1.1 | 5–50 | (36) |
| electrochemical analysis | pyrrole | 0.015 | 0.032–2.553 | (20) |
| HPLC | sodium starch glycolate | 2.185 | 5–20 | (37) |
| electrochemical analysis | poly (amidoamine) dendrimer-encapsulated au | 0.00038 | 0.001–10 | (12) |
| electrochemical analysis | AuNPs-pATP | 0.00015 | 0.00015–0.03113 | this study |