Preconcentration of Trace Amounts of Pb(II) Ions without Any Chelating Agent by Using Magnetic Iron Oxide Nanoparticles prior to ETAAS Determination

Table 2

Tolerance limit of the foreign ions.

Foreign ions	Interference/Pb(II) ratio	Recovery (%)
H2PO4−, HPO42−	7000	95
Na^+, K^+	5000	95
Ca^2+, Mg^2+	3000	105
Co^2+	800	95
Cu^2+, Mn^2+	1000	105
Fe^2+, Fe^3+	400	95
Ni^2+, Zn^2+	1000	105
Al^3+	100	95
Cr^3+	800	95
Sn^2+, Cd^2+	600	105
Ag^+	200	95
Sb^3+, Cd^2+	500	96

Conditions were the same as Figure 1.