Table 3.
Interference effect of the various cations with ATNA/Nafion/GCE.
| Metal Ions | Observed Current (µA) | Interference Effect (%) | *SD (n= 3) | #RSD (%) (n = 3) | |||
|---|---|---|---|---|---|---|---|
| R1 | R2 | R3 | Average | ||||
| Cr3+ | 14.9618 | 14.8241 | 15.1423 | 14.9760 | 100 | 0.1595 | 1.07 |
| Al3+ | 5.2456 | 6.1323 | 5.8625 | 5.7468 | 38 | 0.4545 | 7.91 |
| Ce2+ | 7.1919 | 7.2031 | 7.1879 | 7.1943 | 48 | 0.0078 | 0.11 |
| Co2+ | 6.1792 | 6.2955 | 6.0095 | 6.1614 | 41 | 0.1438 | 2.33 |
| Cu2+ | 6.5441 | 6.6192 | 6.8994 | 6.6875 | 44 | 0.1872 | 2.80 |
| Ga3+ | 6.3739 | 6.2084 | 6.3215 | 6.3012 | 42 | 0.0845 | 1.34 |
| Hg2+ | 6.5512 | 6.4989 | 6.3003 | 6.4501 | 43 | 0.1323 | 2.05 |
| Mn2+ | 4.0958 | 4.3853 | 4.8554 | 4.4455 | 29 | 0.3833 | 8.62 |
| Pb2+ | 5.9285 | 5.7969 | 5.6714 | 5.7989 | 38 | 0.1285 | 2.22 |
| Y3+ | 5.8275 | 6.2791 | 6.3461 | 6.1509 | 41 | 0.2820 | 4.59 |
Interference effect of Cr3+ is considered to be 100%; R = reading; *SD = standard deviation; and #RSD = relative standard deviation.