Research Article
Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay
Figure 11
Effect of the concentration and calibration curve of the Pb2+ ions (a, b) and Cd2+ (c, d).
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| (b) |
| (c) |
| (d) |
| (a) |
| (b) |
| (c) |
| (d) |