The Solid Phase Extraction of Some Metal Ions Using Palladium Nanoparticles Attached to Silica Gel Chemically Bonded by Silica-Bonded N-Propylmorpholine as New Sorbent prior to Their Determination by Flame Atomic Absorption Spectroscopy

Table 4

Specification of presented method at optimum conditions for each element.

Parameters	Cd	Co	Fe	Ni	Zn
Linear range (ng mL^−1)	0.01–0.24	0.02–0.34	0.03–0.41	0.015–0.35	0.01–0.26
Detection Limit (ng Ml^−1)	1.5	2.3	2.7	2.4	1.4
Enrichment factor	28.3	22.1	18.6	21.9	29.3
Preconcentration factor	187.5
RSD %	2.4	2.6	2.7	2.8	2.7
Recovery %	97.1	95.6	96.8	97.4	97.3