Simultaneous Determination of Cr, As, Se, and Other Trace Metal Elements in Seawater by ICP-MS with Hybrid Simultaneous Preconcentration Combining Iron Hydroxide Coprecipitation and Solid Phase Extraction Using Chelating Resin

Figure 1

Comparison of recoveries of V, Cr(III), Co, Ni, Cu, Zn, As(V), Se(IV), Cd, and W in changing the added amount of Fe³⁺ in the hybrid preconcentration.