Selectivity behaviour of a bonded phosphonate–carboxylate polymeric ion exchanger for metal cations with varying eluent compositions

Shaw, Matthew J.; Nesterenko, Pavel N.; Dicinoski, Greg W.; Haddad, Paul R.

doi:10.1016/s0021-9673(03)00111-0

Cited by 33 publications

(18 citation statements)

References 22 publications

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“…This means that the values of log b 1 higher than 4.72 (for Mn 2+ eluted first, [20]) ensure the domination of the chelation mechanism at the surface for the transition metal divalent cation. Similar regularities were observed for Ionpac CS12A column [16] and poly(itaconic) acid cation-exchange column PRP6800 [18].…”

Section: Ionic Strengthsupporting

confidence: 80%

“…A reverse in elution order of the pair Mg 2+ /Ca 2+ on IDA-silica column under HPCIC conditions was noted by Paull and Bashir [27,31] with a variation of column temperature that is connected with a partial change of retention mechanism. Similar trends were also noted for PRPX800 and Ionpac CS14 [31], IonPac CS12A, and Universal Cation [32] commercially available columns [16]. An interesting illustration of the dual mechanism for the retention of alkaline-earth metal cations in diluted eluents was obtained by Kolpachnikova et al [36].…”

Section: The Main Factors Influencing Separation In Hpcic 221 Tempesupporting

confidence: 66%

“…A number of studies have been undertaken for the investigation of temperature effects concerning the separation of alkaline-earth metals [3, 16, 18, 29 -33], Be 2+ [34], transition and heavy metals [16,18,27,33] lanthanides [17,35], both under conventional IC and HPCIC modes. There are several effects of column temperature changes on chromatographic performance in HPCIC, which can be divided into two groups related to kinetic and thermodynamic properties.…”

Section: The Main Factors Influencing Separation In Hpcic 221 Tempementioning

confidence: 99%

“…All investigations involving temperature effects on the retention of metal ions found that the slopes of van't Hoff plots for transition metal ions and lanthanides are usually higher [16,18,35] than for alkaline-earth metals under conditions of HPCIC. This is consistent with the assumption that there is a strong correlation between heats of adsorption and heats of complex formation.…”

Section: The Main Factors Influencing Separation In Hpcic 221 Tempementioning

confidence: 99%

“…They also observed a 13 -44% decrease in retention factors for the same experiment and associated this effect with changes in hydrated radii of the analytes and an increase in pK values for weak acidic functional groups. Shaw et al [16,17] studied the retention of lanthanides on the same column, but under suppressed electrostatic interactions and found changes to peak efficiency minimal in the temperature range between 25 and 408C. Intensive investigations of temperature effects for the range between 27 and 608C on the retention of alkalineearth metal cations on an IonPac CS12A column have also been performed by Hatsis and Lucy [30], who confirmed the decrease in retention times of these cations with increase in the column temperature and noted improvements in peak efficiencies of 14 -34% at 608C as compared with those at 278C.…”

Section: The Main Factors Influencing Separation In Hpcic 221 Tempementioning

confidence: 99%

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Recent developments in the high‐performance chelation ion chromatography of trace metals

Nesterenko¹,

Jones

2007

J of Separation Science

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Review Recent developments in the high-performance chelation ion chromatography of trace metalsThere 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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Section: Ionic Strengthsupporting

confidence: 80%

Section: The Main Factors Influencing Separation In Hpcic 221 Tempesupporting

confidence: 66%

Section: The Main Factors Influencing Separation In Hpcic 221 Tempementioning

confidence: 99%

Section: The Main Factors Influencing Separation In Hpcic 221 Tempementioning

confidence: 99%

Section: The Main Factors Influencing Separation In Hpcic 221 Tempementioning

confidence: 99%

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Recent developments in the high‐performance chelation ion chromatography of trace metals

Nesterenko¹,

Jones

2007

J of Separation Science

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Nanoporous Metal Phosphonate Hybrid Materials as a Novel Platform for Emerging Applications: A Critical Review

Weng

Zhu

et al. 2021

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Nanoporous metal phosphonates are propelling the rapid development of emerging energy storage, catalysis, environmental intervention, and biology, the performances of which touch many fundamental aspects of portable electronics, convenient transportation, and sustainable energy conversion systems. Recent years have witnessed tremendous research breakthroughs in these fields in terms of the fascinating pore properties, the structural periodicity, and versatile skeletons of porous metal phosphonates. This review presents recent milestones of porous metal phosphonate research, from the diversified synthesis strategies for controllable pore structures, to several important applications including adsorption and separation, energy conversion and storage, heterogeneous catalysis, membrane engineering, and biomaterials. Highlights of porous structure design for metal phosphonates are described throughout the review and the current challenges and perspectives for future research in this field are discussed at the end. The aim is to provide some guidance for the rational preparation of porous metal phosphonate materials and promote further applications to meet the urgent demands in emerging applications.

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New method for evaluation of heavy metal binding to alginate beads using pH and conductivity data

Karagündüz

Unal

2006

Adsorption

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Extensive research has been conducted for removal and recovery of heavy metals from wastewater and industrial wastewater in recent years. Due to its low cost and high sorption efficiency, alginate was extensively investigated as a biosorbent. It is known that the sorption of metals to alginate is rate limited. However, the sampling in the beginning of experiments, from 30 seconds to few minutes, is very difficult, if not impossible. In this study, a nontraditional experimental method was used to determine the removal kinetics of metals for short time periods. A relationship among pH, conductivity, and metal concentration was established. It was shown that the sorption mechanism was ion exchange for all metals investigated in this study. A series of experiments was conducted to determine the ion exchange kinetics of different metals at varying pH conditions. Second order pseudo rate kinetics was shown to define the experimental findings well. Results also showed that the extent of exchange significantly reduced as the pH decreased. The selectivity of metal exchange to alginate beads was determined. It was observed that the extent of the ion exchange was greatest for Cu 2+ and lowest for Mn 2+ and Fe 2+ , following the order of Cu 2+ > Zn 2+ ∼ = Co 2+ ∼ = Ni 2+ > Mn 2+ ∼ = Fe 2+ .

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Selectivity behaviour of a bonded phosphonate–carboxylate polymeric ion exchanger for metal cations with varying eluent compositions

Cited by 33 publications

References 22 publications

Recent developments in the high‐performance chelation ion chromatography of trace metals

Recent developments in the high‐performance chelation ion chromatography of trace metals

Nanoporous Metal Phosphonate Hybrid Materials as a Novel Platform for Emerging Applications: A Critical Review

New method for evaluation of heavy metal binding to alginate beads using pH and conductivity data

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