Stable Silica Gel-Bound Crown Ethers. Selective Separation of Metal Ions and a Potential for Separations of Amine Enantiomers

Bradshaw, Jerald S.; Izatt, Reed M.; Christensen, James J.; Krakowiak, Krzysztof E.; Tarbet, Bryon J.; Bruening, Ronald L.; Lifson, Shneior

doi:10.1007/978-94-009-0969-4_16

Cited by 3 publications

(6 citation statements)

References 28 publications

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“…However, separation of metal ions using extraction or membrane systems is not considered as a costeffective option due to the gradual loss of the expensive macrocyclic compounds from the organic membrane or layer [125]. The shortcoming was minimized by attaching the macrocyclic compounds to silica gel using a stable hydrocarbon-ether linkage [99, 100,106,125].…”

Section: Operating Route Of Macrocycles In Metal Separationmentioning

confidence: 99%

“…The shortcoming was minimized by attaching the macrocyclic compounds to silica gel using a stable hydrocarbon-ether linkage [99, 100,106,125]. The efficiency of such systems lead to the development of new separation systems with the use of solid supported macrocycles, which are capable of high selectivity or recognition towards a particular species of metal or metalloid [104,125].…”

Section: Operating Route Of Macrocycles In Metal Separationmentioning

confidence: 99%

“…[105,130]. The silica gel-bound macrocycles having different element-selective properties and behaviors can be prepared as shown in the [125]. Macrocycle containing SPE-materials possesses a greater concentration of active sites compared to the conventional elementseparation option in solid-phase as attributable to the enmeshed small microporous particles into the microfibrous matrix.…”

Section: Selective Solid-phase Extraction Of Elements Using Macrocyclmentioning

confidence: 99%

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Selective separation of elements from complex solution matrix with molecular recognition plus macrocycles attached to a solid-phase: A review

Rahman

Begum

Hasegawa

2013

Microchemical Journal

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Microchemical Journal, 110: 485-493, 2013 The original publication is available at: http://dx.doi. org/10.1016/j.microc.2013.06.006 Abstract Solid-phase extraction (SPE) approach was introduced approximately five decades ago, and until then development of SPE materials is seamlessly continued. Lately, the SPE-based research is increasingly focused in developing more explicit materials to achieve meticulous separation of elements from complex solution matrices with high concentrations of interfering ions. One group of SPE materials includes those with macrocyclic ligands immobilized on a solid-phase, which are capable of selective separation and preconcentration of elements, and such selectivity in metal retention is generally termed as molecular recognition. In the process, the designed 'host' material possesses a high degree of recognition to specific elements or groups of elements called 'guest', and the recognition capability remains effective at the very low concentrations of the 'guest' species or when those present in complex matrices. The routes to the development of element-selective SPEs, the operating principles, applications and limitations are discussed in this review. KeywordsSeparation; element-selectivity; Macrocycles; Solid-phase extraction; Molecular recognition 2 Microchemical Journal, 110: 485-493, 2013 The original publication is available at: http://dx.doi.org/10.1016/j.microc.2013.06.006 IntroductionAlthough metals and metalloids are ubiquitous in nature, the environmental concentrations of both toxic and essential elements have been largely increased mostly pursuant to anthropogenic activities related to the industrial development and improved living standards in modern societies. The growing extent of metal pollution also initiated a number of legislative measures, such as, RoHS or ELV directive has been imposed to specify the limit of trace elements in the industrial products, while the EU directive defined the acceptable concentrations of different elements in cultivable soils.Sensitive analytical techniques such as, flame atomic absorption spectrometry, electrothermal atomic absorption spectrometry, inductively coupled plasma mass spectrometry, inductively coupled plasma optical emission spectrometry, and so forth are available for precise analysis of trace elements in solution. An overall analytical process comprises a number of succeeding steps, including sampling, sample preparation, separation and quantification. Among the aforementioned steps, sample preparation is by far the most important error source in modern analytical method development due to the low species concentration or heterogeneous distribution of the analytes in the matrix as well as the complex nature of the sample matrices. Therefore, a clean-up/separation step is often recommended before the analytical determination of trace elements in effluent or industrial waste waters to avoid the interfering effect from the matrix ions or to facilitate preconcentration due to their low concentrations in samples. The t...

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Section: Operating Route Of Macrocycles In Metal Separationmentioning

confidence: 99%

Section: Operating Route Of Macrocycles In Metal Separationmentioning

confidence: 99%

Section: Selective Solid-phase Extraction Of Elements Using Macrocyclmentioning

confidence: 99%

See 1 more Smart Citation

Selective separation of elements from complex solution matrix with molecular recognition plus macrocycles attached to a solid-phase: A review

Rahman

Begum

Hasegawa

2013

Microchemical Journal

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show abstract

“…However, separation of metal ions using extraction or membrane systems is not considered as a costWater, Air, & Soil Pollution, 224(5): 1526. The original publication is available at: http://dx.doi.org/10.1007/s11270-013-1526-0 effective option due to the gradual loss of the expensive macrocyclic compounds from the organic membrane or layer (Bradshaw et al 1989). The shortcoming was minimized by attaching the macrocyclic compounds to solid support using a stable hydrocarbon-ether linkage, which is capable of high selectivity and of use with very diluted solutions , Bradshaw et al 1989, Bruening et al 1991).…”

Section: Introductionmentioning

confidence: 99%

“…The original publication is available at: http://dx.doi.org/10.1007/s11270-013-1526-0 effective option due to the gradual loss of the expensive macrocyclic compounds from the organic membrane or layer (Bradshaw et al 1989). The shortcoming was minimized by attaching the macrocyclic compounds to solid support using a stable hydrocarbon-ether linkage, which is capable of high selectivity and of use with very diluted solutions , Bradshaw et al 1989, Bruening et al 1991). Silica gel is used mostly among the solid support materials due to its high hydrophilic character, large number of binding sites and substantial inert nature.…”

Section: Introductionmentioning

confidence: 99%

Selective Separation of Tri- and Pentavalent Arsenic in Aqueous Matrix with a Macrocycle-Immobilized Solid-Phase Extraction System

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Selective recovery of indium from the etching waste solution of the flat-panel display fabrication process

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Umehara

et al. 2013

Microchemical Journal

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Stable Silica Gel-Bound Crown Ethers. Selective Separation of Metal Ions and a Potential for Separations of Amine Enantiomers

Cited by 3 publications

References 28 publications

Selective separation of elements from complex solution matrix with molecular recognition plus macrocycles attached to a solid-phase: A review

Selective separation of elements from complex solution matrix with molecular recognition plus macrocycles attached to a solid-phase: A review

Selective Separation of Tri- and Pentavalent Arsenic in Aqueous Matrix with a Macrocycle-Immobilized Solid-Phase Extraction System

Selective recovery of indium from the etching waste solution of the flat-panel display fabrication process

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