Extraction Mechanism of Lanthanide Ions into Silica-based Microparticles Studied by Single Microparticle Manipulation and Microspectroscopy

Toshiki Otaka, Tatsumi Sato, Simpei Ono, Kohei Nagoshi, Ryoji Abe, Tsuyoshi Arai, Sou Watanabe, Yuichi Sano, Masayuki Takeuchi, Kiyoharu Nakatani

Research output: Contribution to journalArticle

Abstract

Single porous silica microparticles coated with a styrene-divinylbenzene polymer (SDB) impregnated with octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) were injected into an aqueous 3 mol/L nitric acid solution containing trivalent lanthanide (Ln(III)), as a high-level liquid waste model. We used the microcapillary manipulation-injection technique; and the extraction rate of Ln(III), as an Ln(III)-CMPO complex, into the single microparticles was measured by luminescence microspectroscopy. The extraction rate significantly depended on the Ln(III), CMPO, or NO3- concentration, and was analyzed in terms of diffusion in the pores of the microparticles and the complex formation of Ln(III). The results indicated that the rate-determining step in Ln(III) extraction was diffusion in the pore solution of the microparticles.

Original languageEnglish
Pages (from-to)1129-1133
Number of pages5
JournalAnalytical sciences : the international journal of the Japan Society for Analytical Chemistry
Volume35
Issue number10
DOIs
Publication statusPublished - 2019 Oct 10

Fingerprint

Lanthanoid Series Elements
Silicon Dioxide
divinyl benzene
Ions
Nitric Acid
Styrene
Oxides
Luminescence
Polymers
Liquids

Keywords

  • complex formation
  • diffusion
  • extraction
  • high-level liquid waste
  • lanthanide
  • microspectroscopy
  • Silica-based microparticle

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Extraction Mechanism of Lanthanide Ions into Silica-based Microparticles Studied by Single Microparticle Manipulation and Microspectroscopy. / Otaka, Toshiki; Sato, Tatsumi; Ono, Simpei; Nagoshi, Kohei; Abe, Ryoji; Arai, Tsuyoshi; Watanabe, Sou; Sano, Yuichi; Takeuchi, Masayuki; Nakatani, Kiyoharu.

In: Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, Vol. 35, No. 10, 10.10.2019, p. 1129-1133.

Research output: Contribution to journalArticle

Otaka, Toshiki ; Sato, Tatsumi ; Ono, Simpei ; Nagoshi, Kohei ; Abe, Ryoji ; Arai, Tsuyoshi ; Watanabe, Sou ; Sano, Yuichi ; Takeuchi, Masayuki ; Nakatani, Kiyoharu. / Extraction Mechanism of Lanthanide Ions into Silica-based Microparticles Studied by Single Microparticle Manipulation and Microspectroscopy. In: Analytical sciences : the international journal of the Japan Society for Analytical Chemistry. 2019 ; Vol. 35, No. 10. pp. 1129-1133.
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abstract = "Single porous silica microparticles coated with a styrene-divinylbenzene polymer (SDB) impregnated with octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) were injected into an aqueous 3 mol/L nitric acid solution containing trivalent lanthanide (Ln(III)), as a high-level liquid waste model. We used the microcapillary manipulation-injection technique; and the extraction rate of Ln(III), as an Ln(III)-CMPO complex, into the single microparticles was measured by luminescence microspectroscopy. The extraction rate significantly depended on the Ln(III), CMPO, or NO3- concentration, and was analyzed in terms of diffusion in the pores of the microparticles and the complex formation of Ln(III). The results indicated that the rate-determining step in Ln(III) extraction was diffusion in the pore solution of the microparticles.",
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AU - Otaka, Toshiki

AU - Sato, Tatsumi

AU - Ono, Simpei

AU - Nagoshi, Kohei

AU - Abe, Ryoji

AU - Arai, Tsuyoshi

AU - Watanabe, Sou

AU - Sano, Yuichi

AU - Takeuchi, Masayuki

AU - Nakatani, Kiyoharu

PY - 2019/10/10

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AB - Single porous silica microparticles coated with a styrene-divinylbenzene polymer (SDB) impregnated with octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) were injected into an aqueous 3 mol/L nitric acid solution containing trivalent lanthanide (Ln(III)), as a high-level liquid waste model. We used the microcapillary manipulation-injection technique; and the extraction rate of Ln(III), as an Ln(III)-CMPO complex, into the single microparticles was measured by luminescence microspectroscopy. The extraction rate significantly depended on the Ln(III), CMPO, or NO3- concentration, and was analyzed in terms of diffusion in the pores of the microparticles and the complex formation of Ln(III). The results indicated that the rate-determining step in Ln(III) extraction was diffusion in the pore solution of the microparticles.

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KW - lanthanide

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KW - Silica-based microparticle

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