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. 2026 Oct 21. Online ahead of print. doi: 10.1039/d6ra06899e

Table 2. Determination and recovery of metronidazole in tap water and human urine matrices using the modified Ni-rGO electrode.

Sample Concentration of MTZ (µM) Recovery (%)
Added Found
Urine 0 ND —
50 50.997 ± 0.16 102
100 107.572 ± 0.24 108
150 140.105 ± 0.22 93
Tap water 0 ND —
75 71.236 ± 0.14 95
100 102.115 ± 0.16 102
125 109.263 ± 0.30 87