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Kim, D. W.; Jeon, Byeong Kwang; Kim, C. S.; Jeon, Young Shin

doi:10.1023/a:1006792706892

Cited by 9 publications

(6 citation statements)

References 13 publications

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“…In addition, the adsorption capacity of the resin for magnesium ion was 26.8 mg/g dry resin at pH 7. The distribution coefficient (K d ) of magnesium ion on the resin was measured by varying the concentration of the NH 4 Cl solution from 1.0 × 10 −3 to 2.0 M using a batch method (7,8). As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The AM18C6 bonded Merrifield peptide resin was prepared by the method given in the literature (7,8). The 2-aminomethyl-18-crown-6 was purchased from Aldrich Chemical Company, Inc. (USA).…”

Section: Methodsmentioning

confidence: 99%

“…For the determination of the distribution coefficient (K d ), the batch method was employed (7,8). Each portion of 1.0 g of the AM18C6 bonded Merrifield peptide resin, 200 mesh, which had been dried to constant weight at 60…”

Section: Measurement Of Distribution Coefficientmentioning

confidence: 99%

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Adsorption and Isotope Effects by Ion Exchange with Aqueous-2-Aminomethyl-18-Crown-6 Bonded Merrifield Resin

Kim¹,

Kang²,

Jeon³

et al. 2002

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

“…The AM18C6 bonded Merrifield peptide resin was prepared by the method given in the literature (7,8). The 2-aminomethyl-18-crown-6 was purchased from Aldrich Chemical Company, Inc. (USA).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption and Isotope Effects by Ion Exchange with Aqueous-2-Aminomethyl-18-Crown-6 Bonded Merrifield Resin

Kim¹,

Kang²,

Jeon³

et al. 2002

Journal of Colloid and Interface Science

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“…The concentration of lithium ions in the supernatant was determined using ICP. Distribution coefficient, K d was calculated by the following equation: 15,16 V NaOH N NaOH V HCl N HCl -Sample weight % dried matirial/100 where Mp is the mass in g of dry resin indicated, Vsoln the total volume in mL of the solution, Cst is the metal ion concentration of the standard solution.…”

Section: -7mentioning

confidence: 99%

Separation of Lithium Isotopes by Tetraazamacrocycles Tethered to Merrifield Peptide Resin

Jeon¹,

Jang²,

Kang³

et al. 2007

Bulletin of the Korean Chemical Society

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Tetraazamacrocyclic ion exchangers tethered to Merrifield peptide resin (DTDM, TTTM) were prepared and the ion exchange capacity of these was characterized. The isotope separation of lithium was determined using breakthrough method of column chromatography. The isotope separation coefficient was strongly dependent on the ligand structure by Glueckauf's theory. We found that the isotope separation coefficients were increased as the values of distribution coefficients were increased. In this experiment the lighter isotope, 6 Li was enriched in the resin phase, while the heavier isotope, 7 Li in the solution phase. The ion radius of lighter isotope, 6 Li was shorter than the heavier isotope, Li. The hydration number of lithium ion with the same charge became small as mass number was decreased. Because 6 Li was more strongly retained in the resin than 7 Li, the isotopes of lithium were separated with subsequent enrichment in the resin phase.

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“…They also found that the heavier isotopes were enriched into the resin phase, while the lighter isotopes were enriched into the solution phase. Recently, Kim et al [10] reported that the enrichment of magnesium isotopes by triazacrown ion exchanger was investigated.…”

Section: Introductionmentioning

confidence: 99%

The enrichment of magnesium isotopes by AM15C5 bonded ion exchanger

Kim¹,

Kang²

2002

Radiochimica Acta

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Magnesium isotope enrichment was investigated by chemical ion exchange with a synthesized 2 -aminomethyl-15-crown-5(AM15C5) bonded Merrifield peptide resin using elution chromatography. The capacity of the novel crown ion exchanger was found to be 2.3 meq/g dry resin. The heavier isotopes of magnesium were enriched in the solution phase, while the lighter isotopes were enriched in the resin phase. The separation factor was determined according to the method of Glueckauf from the elution curve and isotopic assays. The separation factors of 24 Mg 2+ -25 Mg 2+ , 24 Mg 2+ -26 Mg 2+ , and 25 Mg 2+ -26 Mg 2+ isotope pair fractionations were 1.013, 1.024, and 1.012, respectively.

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Untitled

Cited by 9 publications

References 13 publications

Adsorption and Isotope Effects by Ion Exchange with Aqueous-2-Aminomethyl-18-Crown-6 Bonded Merrifield Resin

Adsorption and Isotope Effects by Ion Exchange with Aqueous-2-Aminomethyl-18-Crown-6 Bonded Merrifield Resin

Separation of Lithium Isotopes by Tetraazamacrocycles Tethered to Merrifield Peptide Resin

The enrichment of magnesium isotopes by AM15C5 bonded ion exchanger

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