Determination of Trace Silver in Water Samples by Online Column Preconcentration Flame Atomic Absorption Spectrometry Using Termite Digestion Product

Figure 7

Pareto chart of standardized effects for variables (1: sorbent mass, 2: sample pH, 3: buffer concentration and 4: sample flow rate) and their interactions (2by4, 2by3, 1by3, 1by2, 1by4, and 3by4) in the Ag preconcentration.