| This work: Gold/C6/Electrolyte | Si/SiO2/C6/Electrolyte | Si P/SiO2/C6/Electrolyte | |
| Detection method Detected substance Sensibility (mV/p [Ni2+]) Linear range (M) Detection limit (M) Reference | Impedimetric Ni2+ −1116 ul/p [Ni2+] 10−6 - 10−1 10−6 - | Potentiometric Ni2+ 24 10−3 - 10−1 10−3 [23] | Potentiometric Ni2+ 28 10−3 - 10−1 10−3 [34] |