Preconcentration of Pb(II) by Magnetic Metal-Organic Frameworks and Analysis Using Graphite Furnace Atomic Absorption Spectroscopy

Figure 3

(a) Effect of sample solution pH. (b) Effect of adsorption time. (c) Effect of the type and concentration of eluent. (d) Effect of desorption time. (e) Effect of sorbent amount. (f) Reusability of the adsorbent.

(a)

(b)

(c)

(d)

(e)

(f)