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

研究成果: Article

抜粋

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 manipulationinjection 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 NO-3 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.

元の言語English
ページ(範囲)1129-1133
ページ数5
ジャーナルAnalytical Sciences
35
発行部数10
DOI
出版物ステータスPublished - 2019

ASJC Scopus subject areas

  • Analytical Chemistry

フィンガープリント Extraction mechanism of lanthanide ions into silica-based microparticles studied by single microparticle manipulation and microspectroscopy' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用