Table 3 Comparison of the present sensor system and other electrochemical Al3+ detection methods
Chelators used | Chelator modification method | Method based on | Detection limit | References |
---|---|---|---|---|
Alizarin red S | LbL assembly of (A.R.S./LDHs)n on ITO/PET | CV | 10.1 nM | Present system |
Alizarin red S | LbL assembly of (A.R.S./LDHs)n on ITO/PET | Spectrofluorimetry | 23 nM | Present system |
Alizarin red | Drop coating | ASV | 19.21 μM | [55] |
Pyrocatechol violet | Adsorption | ASV | 0.26 μM | [56] |
8-Hydroxy-quinoline | Adsorption | ASV | 4 ppm | [51] |
Mercaptosuccinic acid | Self-assembly onto gold nanoparticles modified S.P.E | CV | 37 nM | [38] |
p-((8-hydrocycloquiboline)azo) benzenethiol | Self-assembly onto a gold electrode | Potentiometry | 8.32 × 10–3 nM | [57] |
Haematoxylin with graphite powder and paraffin wax | blending | Voltammetry and EIS | 100 nM | [58] |
Alizarin red S | Sol–gel on glassy carbon electrode | DPV | 80 nM | [59] |
Alizarin red | Polymerization with PVA-SbQ | Amperometry | 25 μM | [60] |