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Table 1 The results of AA calibration for measurement of Pb2+

From: Modification of pomegranate waste with iron ions a green composite for removal of Pb from aqueous solution: equilibrium, thermodynamic and kinetic studies

Concentration of Pb2+ (ppm) No. of replicates Mean value of signal S D
0.0 20 0.0037 0.01108
5.0 5 0.1718 0.00227
10.0 5 0.3312 0.00368
25.0 5 0.8526 0.00225
50.0 5 1.7070 0.00574