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Table 3 Response characteristics of the proposed sensor comparatively to other similar electrodes presented in the literature

From: Potentiometric detection and removal of copper using porphyrins

Ref. Linear range Slope (mV/decade) Response time (s) Detection limit (M)
(M)
[7] 1x10-5 – 1x10-1 28.6 ± 0.4 25 5.4x10-6
[8] 1x10-6 – 1x10-1 29.8 ± 0.7 15 6.0x10-7
[9] 1x10-8 – 5.7x10-4 - 150 8.8x10-9
[10] 5x10-6 – 1.6x10-2 29.2 ± 2.0 <10 2x10-6
[11] 1x10-7 – 1x10-1 27.9 ± 0.8 <30 7,8x10-8
[12] 1x10-6 – 1x10-1 29.2 ± 0.4 - 30,5 μg/L
[13] 4.4x10-6 – 1x10-1 29.3 8 0.28 mg/L
[14] 1x10-6 – 1x10-2 30.2 – 25.9 <15 0.05-0.13 mg/L
[15] 1x10-6 – 1x10-1 29.6 ± 0.3 13 7.9x10-7
[16] 1x10-6 – 1x10-1 28.8 10-40 7x10-7
[17] 9.8x10-6 – 1x10-1 30.3 20 -
[18] 1x10-5 – 1x10-2 37.6 0.25 4.4x10-6
This work 1x10-7 – 1x10-1 28.4 ± 0.4 10 9x10-8