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Table 1 Recovery test for the optimized procedure for heavy metals analysis

From: Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water

Elements Conc. in sample (mg/L) Amount added (mg/L) Conc. in spiked sample (mg/L) Recovery (%)
Pb 0.696 2.00 2.57 93.7
Cd 0.795 0.25 1.03 94.0
Cr 0.658 1.00 1.65 99.2