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Comparative Study of Lead Removal by Extracts of Spinach, Coffee, and Tea

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Figure

Table 1. Residual & removed lead in contaminated water after treatment with spinach and brewed coffee/tea extracts
Figure 1. (a) Lead concentration remaining after contaminated water was treated with extracts of spinach and brewed coffee and tea; (b) Percent lead removed after contaminated water was treated with extracts of spinach and brewed coffee and tea
Figure 2. Line graph of data on Table 4: Comparison of lead removal of coffee and tea extracts isolated at 60˚C (brewed) & 90˚C (heated or boiled) R2 (brewed) = 0.7705, & R2 (heated) = 0.8787
Figure 4. (a) Lead concentration remaining after contaminated water was treated with extracts of brewed & boiled coffee and tea (IC-B, IC-H; CG-B, CG-H; CB-B, CB-H; Tea-B, Tea-H); (b) Percent lead removed after contaminated water was treated with brewed an
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