Solid phase extraction of rare earth elements in seawater and estuarine water with 4-(2-thiazolylazo) resorcinol immobilized Chromosorb 106 for determination by inductively coupled plasma mass spectrometry

Abstract

A solid phase preconcentration method has been developed using new chelating resin prepared by immobilization of 4-(2-thiazolylazo) resorcinol (TAR) on Chromosorb 106. The method was optimized for determination of rare earth elements (REEs) in seawater and estuarine water samples by inductively coupled plasma mass spectrometry (ICP-MS). The effects of various experimental parameters, such as load pH, eluent concentration, sample and eluent flow rates were examined to find the optimum operating conditions. The REEs were quantitatively retained from saline solutions on a minicolumn Chromosorb 106-TAR resin at pH 5.0 and then eluted with 1.0 mL of 1% (v/v) HNO3. The resin possesses large sorption capacity for REEs ranging from 81.1 µmol g−1 for Lu and 108 µmol g−1 for Nd. Detection limits (3s) varied between 0.06 ng L−1 for Pr to 0.31 for Ce for preconcentration of 5.0 mL blank solutions (pH 5.0). The relative standard deviation for triplicate measurements was less than 5% at 0.1 µg L−1 level. The method was validated by analysis Nearshore seawater certified reference material (CASS–4). The elemental results were comparable with the values reported in literature. The method was verified by analysis of spiked and unspiked coastal seawater and estuarine water samples.

Solid Phase Extraction of Trace Amounts of Praseodymium Using Transcarpathian Clinoptilolite

“…In recent years, the method of solid phase extraction is used in sample preparation for analysis because of its high recovery, high enrichment factor, rapid phase separation, application of small volumes of organic solvents and low cost [2]. This method of samples pre-treatment is demanded even during the analysis of samples with such selective and highly sensitive methods as energy dispersive X-ray fluorescence and inductively coupled plasma [3][4][5][6][7][8]. The exclusion and regeneration of praseodymium from technological solution is also significant.…”

“…Various sorbents are used for praseodymium preconcentration via solid phase extraction technique, such as modified silica gel [3,4], carbon-ferrite magnetic nanocomposite [5], Muromac A-1 resin [6], Chromosorb 106-TAR resin [7], and Fe 3 O 4 @TiO 2 @P 2 O 4 nanoparticles [8]. Xiong et al [9] studied the adsorption of Pr(III) from aqueous solutions using strongly acidic cation exchange resin D72.…”

Preconcentration of Lutetium from Aqueous Solution by Transcarpathian Clinoptilolite

“…However, it is known that they cause negative consequences for the human health. 7 That is why the determination of Ln in natural waters is important not only from the point of view of analytical chemistry, but also geochemistry, oceanography, and natural science. [8][9][10][11][12] Ln are present in natural objects in small quantities, so often the preliminary treatment of samples is applied for their determination, which in particular includes preconcentration, separation, and exclusion.…”

Simultaneous determination of trace rare-earth elements in simulated water samples using ICP-OES with TODGA extraction/back-extraction

“…Several analytical methodologies have been applied to the determination of REEs in practical samples, such as neutron activation analysis (NAA) [ 8 – 10 ], X-ray fluorescence (XRF) spectrometry [ 11 – 13 ], inductively coupled plasma mass spectrometry (ICP-MS) [ 14 – 17 ] and inductively coupled plasma optical emission spectrometry (ICP-OES) [ 18 – 22 ]. However, NAA not only requires a nuclear reactor, but also a complicated disposal process, so it is not suitable for common sample detection.…”