From: Potentiometric detection and removal of copper using porphyrins
Copper sample (mg/L)
Found by electrode (mg/L)
Found by AAS (mg/L)
Recovery (%)
20
(19.3 ± 0.4)
(19.6 ± 0.2)
98.4
50
(49.5 ± 0.5)
(49.8 ± 0.3)
99.4