Preconcentration of Rare Earth Elements in Seawater with Chelating Resin Having Fluorinated β‐Diketone Immobilized on Styrene Divinyl Benzene for their Determination by ICP‐OES

Abstract

An analytical method has been developed for the preconcentration of rare earth elements (REEs) in seawater for their determination by inductively coupled plasma optical emission spectrometry (ICP-OES). An indigenously synthesized chelating resin was used for the preconcentration of (REEs) which was based on immobilization of fluorinated b-diketone group on solid support styrene divinyl benzene. Sample solutions (adjusted to optimized pH) were passed through a polyethylene column packed with 250 mg of the resin. Experimental conditions consisting of pH, sample flow rate, sample volume and eluent concentration were optimized. The established method has been applied for the preconcentration of light, medium and heavy REEs in coastal sea water samples for their subsequent determination by (ICP-OES). Percentage recoveries of La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb and Lu were ³ 95%, a preconcentration factor of 200 times, and relative standard deviations < 5% were achieved.

Investigation of Sorption and Separation of Lanthanides on the Ion Exchangers of Various Types

“…In the paper by De Vito et al (1999) it was found that Amberlite XAD-7 resin with (o-[3,6-disulpho-2-hihydroxy-1-naphthylazo]-benzenearsonic acid) was successfully used for the separation and preconcentration of Sm(III), Eu(III) and Gd(III). The resin containing the fluorinated--diketone chelating group immobilized on solid support styrene divinyl benzene was applied for the simultaneous preconcentration of La(III), Ce(IV), Nd(III), Sm(III), Gd(III), Eu(III), Dy(III), Er(III), Yb(III) and Lu(III) (Rao & Kala, R. 2004;Waqar, et al 2009). Preconcentration of La(III), Eu(III) and Yb(III) was also achieved by sorption of their 1-phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP) complexes on a silica gel column (Liang & Fa, 2005).…”

Solid‐phase extraction and pre‐concentration of trace metals in natural waters using indigenously synthesized chelating resin and their subsequent determination by ICP‐OES

“…In our earlier work, we have characterize locally synthesized chelating resin based on immobilization of fluorinated beta diketone group on solid support styrene divinyl benzene (SDVB) for the pre‐concentration of light, medium and heavy rare earth elements (La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb and Lu) in coastal sea water samples 32. In this work, the resin was investigated for the simultaneous extraction/pre‐concentration of Cd, Co, Fe, Mn, Mo, Ni and Zn in natural water samples of various origins including Dam, River and Tap water.…”

Preparation of diglycolamide polymer modified silica and its application as adsorbent for rare earth ions

“…Various adsorbent such as polymer materials [7,8], carbon materials [9,10], and silica materials [11,12] have been studied. To selectively adsorb REEs, small molecules bearing chelating groups such as β-diketone [13], EDTA [14], are often used to modify the material surface. Diglycolamide (DGA), containing ether linkages between two amide groups, display high affinity for REEs and have been used as extractant [15,16].…”