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Performance Evaluation of Fixed Bed Column Packed with Ionic Liquid Impregnated Silica for Separation of Gadolinium and Neodymium from Aqueous Solutions. Chromatographia 2021. [DOI: 10.1007/s10337-020-04001-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Chen B, He M, Zhang H, Jiang Z, Hu B. Chromatographic Techniques for Rare Earth Elements Analysis. PHYSICAL SCIENCES REVIEWS 2017. [DOI: 10.1515/psr-2016-0057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe present capability of rare earth element (REE) analysis has been achieved by the development of two instrumental techniques. The efficiency of spectroscopic methods was extraordinarily improved for the detection and determination of REE traces in various materials. On the other hand, the determination of REEs very often depends on the preconcentration and separation of REEs, and chromatographic techniques are very powerful tools for the separation of REEs. By coupling with sensitive detectors, many ambitious analytical tasks can be fulfilled.Liquid chromatography is the most widely used technique. Different combinations of stationary phases and mobile phases could be used in ion exchange chromatography, ion chromatography, ion-pair reverse-phase chromatography and some other techniques. The application of gas chromatography is limited because only volatile compounds of REEs can be separated. Thin-layer and paper chromatography are techniques that cannot be directly coupled with suitable detectors, which limit their applications. For special demands, separations can be performed by capillary electrophoresis, which has very high separation efficiency.
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Lad SN, Mohite BS. Analytical application of poly[dibenzo-18-crown-6] for column chromatographic separation of Nd(III) from Ce(III), U(VI) and other elements. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3663-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Deka JR, Liu CL, Wang TH, Chang WC, Kao HM. Synthesis of highly phosphonic acid functionalized benzene-bridged periodic mesoporous organosilicas for use as efficient dye adsorbents. JOURNAL OF HAZARDOUS MATERIALS 2014; 278:539-550. [PMID: 25010459 DOI: 10.1016/j.jhazmat.2014.06.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 06/11/2014] [Accepted: 06/12/2014] [Indexed: 06/03/2023]
Abstract
Periodic mesoporous organosilicas (PMOs) with benzene bridging groups in the silica wall were functionalized with a tunable content of phosphonic acid groups. These bifunctional materials were synthesized by co-condensation of two different organosilane precursors, that is, 1,4-bis(triethoxysilyl)benzene (BTEB) and sodium 3-(trihydroxysilyl)propyl methyl phosphate (SPMP), under acidic conditions using nonionic surfactant Brij-S10 as template. The materials exhibited well-ordered mesostructures and were characterized by X-ray diffraction, nitrogen sorption, TEM, TGA, FTIR, and solid-state NMR measurements. The materials thus obtained were employed as adsorbents to remove different types of dyes, for example, cationic dyes methylene blue and phenosafranine, anionic orange II, and amphoteric rhodamine B, from aqueous solutions. The materials exhibited a remarkably high adsorption capacity than activated carbon due to their ordered mesostructures, a large number of phosphonic acid groups, and high surface areas. The adsorption was mainly governed by electrostatic interaction, but also involved π-π stacking interaction as well as hydrogen bonding. The adsorption kinetics can be better fitted by the pseudo-second order model. The adsorption process was controlled by the mechanisms of external mass transfer and intraparticle diffusion. The materials retained more than 97% dye removal efficiency after use for five consecutive cycles.
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Affiliation(s)
- Juti Rani Deka
- Department of Chemistry, National Central University, Chung-Li 32054, Taiwan, ROC
| | - Chia-Ling Liu
- Department of Chemistry, National Central University, Chung-Li 32054, Taiwan, ROC
| | - Tzu-Hua Wang
- Department of Chemistry, National Central University, Chung-Li 32054, Taiwan, ROC
| | - Wei-Chieh Chang
- Department of Chemistry, National Central University, Chung-Li 32054, Taiwan, ROC
| | - Hsien-Ming Kao
- Department of Chemistry, National Central University, Chung-Li 32054, Taiwan, ROC.
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Daikopoulos C, Bourlinos AB, Georgiou Y, Deligiannakis Y, Zboril R, Karakassides MA. A functionalized phosphonate-rich organosilica layered hybrid material (PSLM) fabricated through a mild process for heavy metal uptake. JOURNAL OF HAZARDOUS MATERIALS 2014; 270:118-126. [PMID: 24565929 DOI: 10.1016/j.jhazmat.2014.01.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 01/14/2014] [Accepted: 01/27/2014] [Indexed: 06/03/2023]
Abstract
A phosphonate-rich organosilica layered hybrid material (PSLM) made of 3-(trihydroxysilyl)propyl methylphosphonate, monosodium salt, as the single silica source, has been obtained from its aqueous solution through a xerogel process and mild thermal aging. The method is simple, affording bulk quantities of powdered PSLM in a single-step. The hybrid is stable in water and possesses a high content of phosphonate groups fixed on the solid matrix. In addition, PSLM shows good thermal stability, which exceeds 300°C in air. The material was characterized using SEM, TEM, XRD, FT-IR and TGA techniques. Potentiometric titrations show that PSLM bears high-surface density of phosphonate groups (3 mmol g(-1)). As a result, the material displays high metal uptake capacity for heavy metal ions such as Cu(2+) (2.72mmolg(-1)), Pb(2+) (1.67 mmol g(-1)) and Cd(2+) (1.00 mmol g(-1)) at neutral pH values e.g. the pH of natural waters. Detailed theoretical modeling using a Surface Complexation Model combined with Electron Paramagnetic Resonance (EPR) spectroscopy shows that the surface distribution of surface bound Cu(2+) ions is rather homogeneous e.g. copper-binding phosphonate sites are arranged in average distances 5-8Å.
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Affiliation(s)
- Chris Daikopoulos
- Department of Materials Science and Engineering, University of Ioannina, Ioannina 45110, Greece
| | - Athanasios B Bourlinos
- Institute of Materials Science, NCSR "Demokritos", Ag. Paraskevi Attikis, Athens 15310, Greece
| | - Yiannis Georgiou
- Laboratory of Physical Chemistry, Department of Environmental and Natural Resources Management, University of Patras, Seferi 2, Agrinio 30100, Greece
| | - Yiannis Deligiannakis
- Laboratory of Physical Chemistry, Department of Environmental and Natural Resources Management, University of Patras, Seferi 2, Agrinio 30100, Greece.
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Department of Physical Chemistry and Experimental Physics, Palacky University, Olomouc 77146, Czech Republic
| | - Michael A Karakassides
- Department of Materials Science and Engineering, University of Ioannina, Ioannina 45110, Greece
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Yurchenko GR, Matkovskii AK, Mel’nik IV, Dudarko OA, Stolyarchuk NV, Zub YL, Alonso B. Adsorption properties of silica-based sorbents containing phosphonic acid residues. COLLOID JOURNAL 2012. [DOI: 10.1134/s1061933x12030179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sánchez Trujillo I, Vereda Alonso E, García de Torres A, Cano Pavón JM. Development of a solid phase extraction method for the multielement determination of trace metals in natural waters including sea-water by FI-ICP-MS. Microchem J 2012. [DOI: 10.1016/j.microc.2011.11.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Karadaş C, Kara D, Fisher A. Determination of rare earth elements in seawater by inductively coupled plasma mass spectrometry with off-line column preconcentration using 2,6-diacetylpyridine functionalized Amberlite XAD-4. Anal Chim Acta 2011; 689:184-9. [DOI: 10.1016/j.aca.2011.01.049] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 01/18/2011] [Accepted: 01/26/2011] [Indexed: 10/18/2022]
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Deepika P, Sivaraman N, Sabharwal KN, Srinivasan TG, Vasudeva Rao PR. Separation of lanthanides and actinides on a bistriazinyl pyridine coated reverse phase column. RADIOCHIM ACTA 2011. [DOI: 10.1524/ract.2011.1819] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
The retention behaviour of uranium, thorium, americium and lanthanides has been investigated, using a reverse phase C18 column modified with 2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine (n-Pr-BTP) with the aim of investigating rapid lanthanide-actinide separations by HPLC technique. Nitric acid and α-hydroxy isobutyric acid (α-HIBA) have been employed as the mobile phase. The influence of mobile phase pH and concentration on the retention of metal ions has been studied. The aim of this study is to investigate the use of BTP coated reverse phase columns as analytical columns for the fast separation of the minor actinides from the lanthanides in the high-level waste (HLW), and to explore whether such columns can be used on a preparative scale for the purification and the recovery of minor actinides from the high-level waste (HLW). It was observed that reverse phase columns modified with BTP showed greater affinity for actinides but exhibited no retention for lanthanides and the lanthanide-actinide separations could be achieved in nitric acid mobile phase, without the need for complexing agents. Americium was separated from the lanthanides with good peak profile and baseline resolution in both nitric acid as well as α-HIBA as the mobile phase. Based on this, the separation of americium from the lanthanides in the HLW was also demonstrated. The retention of a significant amount of thorium by the column in breakthrough studies also indicated that these columns can be used for preparative scale purification of the actinides.
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Affiliation(s)
- P. Deepika
- Indira Gandhi Centre for Atomic Research, Chemistry Group, Kalpakkam 603102, Indien
| | - N. Sivaraman
- Indira Ghandi Centre for Atomic Research, Chemistry Group, Kalpakkam, Indien
| | - K. N. Sabharwal
- Indira Gandhi Centre for Atomic Research, Chemistry Group, Kalpakkam 603102, Indien
| | | | - P. R. Vasudeva Rao
- Indira Gandhi Centre for Atomic Research, Fuel Chemistry Division, Kalpakkam 603102, Indien
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Zaitsev VN, Kobylinskaya NG, Kostenko LS, Gerda VI. Conductometric determination of the concentration of acid centers on functionalized materials. JOURNAL OF ANALYTICAL CHEMISTRY 2008. [DOI: 10.1134/s1061934808080121] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nesterenko PN, Jones P. Recent developments in the high-performance chelation ion chromatography of trace metals. J Sep Sci 2007; 30:1773-93. [PMID: 17623454 DOI: 10.1002/jssc.200700126] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
There have been a number of significant developments in the high-performance chelation ion chromatography (HPCIC) of trace metals in recent years. This review focuses on these developments, while giving important information on the fundamental parameters controlling the chelation sorption mechanism, including type of chelating group, stability constants, kinetics, and column temperature. The discussion pays particular attention to the types and properties of efficient chelating stationary phases which have been fabricated for certain groups of metals. The review also describes a number of major improvements in postcolumn reaction detection including the use of the latest reagents and noise reduction strategies to improve sensitivity and reduce LOD. In the final section, an indication of the applicability of HPCIC to a range of complex sample types is given with some key examples and chromatograms using the latest high-efficiency chelating phases.
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Affiliation(s)
- Pavel N Nesterenko
- Australian Centre for Research on Separation Sciences, University of Tasmania, Hobart, Australia.
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Orescanin V, Mikelic L, Roje V, Lulic S. Determination of lanthanides by source excited energy dispersive X-ray fluorescence (EDXRF) method after preconcentration with ammonium pyrrolidine dithiocarbamate (APDC). Anal Chim Acta 2006; 570:277-82. [PMID: 17723409 DOI: 10.1016/j.aca.2006.04.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2005] [Revised: 04/06/2006] [Accepted: 04/11/2006] [Indexed: 10/24/2022]
Abstract
A new analytical procedure for determination of lanthanides in environmental samples after chemical separation from major matrix elements on DOWEX 50W-X8 resin followed by preconcentration with chelating agent ammonium pyrrolidine dithiocarbamate (APDC) and analyses of thin targets by energy dispersive X-ray fluorescence (EDXRF) method using 109Cd as the source of excitation was presented. Characteristic Lalpha X-ray lines of the lanthanides were used for calculations of the net peak area and mass concentrations. The influence of pH value of the solution and addition of organic matter on the complexation was investigated. Percentage of recovery of each lanthanide after separation on DOWEX 50W-X8 resin was also determined. Accuracy of the method was tested on standard reference materials and real environmental samples (red mud material). For that purpose samples of standard reference materials and red mud were prepared as thick targets and directly analyzed (without the separation step) by EDXRF method using 241Am as the excitation source. In that case lanthanides concentrations were determined over their characteristic Kalpha X-ray lines and results were compared with those obtained after separation/preconcentration step described above. Results showed that selected lanthanides made stable complexes with APDC in the alkaline medium with the maximum recovery at pH=8. The presence of organic matter slightly modified the complexation by means of somewhat higher recovery percentage at pH lower than 7 and approx. 20% lower recovery at pH higher than 7. Recovery of the elements after separation on DOWEX 50W-X8 resin and preconcentration with APDC at pH=8 varied from 91.4% (Pr) to only 24.9% in the case of Dy. Concentrations of lanthanides measured in standard reference material and environmental samples of red mud after microwave digestion, separation on DOWEX 50W-X8 resin, preconcentration with APDC at pH=8 and recalculation on the percentage of recovery were in good agreement with certified values in the case of SRM as well as with the concentrations obtained by direct determination over Kalpha lines using 241Am excitation source in the case of red mud leading to the conclusion that presented method was applicable for the determination of lanthanides in real environmental samples.
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Affiliation(s)
- Visnja Orescanin
- Rudjer Boskovic Institute, Centre for Marine and Environment Research, Bijenicka cesta 54, 10002 Zagreb, Croatia.
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On-line preconcentration of some rare earth elements in water samples using C18-cartridge modified with l-(2-pyridylazo) 2-naphtol (PAN) prior to simultaneous determination by inductively coupled plasma optical emission spectrometry (ICP–OES). Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.03.058] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Soran ML, Hodişan T, Curtui M, Casoni D. TLC separation of rare earths using di(2-ethylhexyl)dithiophosphoric acid as complexing reagent. JPC-J PLANAR CHROMAT 2005. [DOI: 10.1556/jpc.18.2005.2.13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Camel V. Solid-phase extraction. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0166-526x(03)41014-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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