Research Article
Poly(1,5-Diaminonaphthalene)-Modified Screen-Printed Device for Electrochemical Lead Ion Sensing
Table 3
Determination of Pb2+ in different tap water samples (mean of three determinations).
| | Sample | Original (μg·L−1) | Add (μg·L−1) | Found (μg·L−1) | Recovery (%) |
| | Tap water 1 | Not detected | 2.0 | 1.98 | 94.5 | | Tap water 2 | Not detected | 3.0 | 3.02 | 100.7 | | Tap water 3 | Not detected | 4.0 | 4.05 | 101.2 |
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