Synergistic Ion-pair Extraction of Strontium Ion with Tri-n-octylphosphine Oxide and Dicyclohexano-18-crown-6

Mami ONIZAKI; Kotaro MORITA; Naoki HIRAYAMA

doi:10.2116/analsci.32.1367

Notes

Synergistic Ion-pair Extraction of Strontium Ion with Tri-n-octylphosphine Oxide and Dicyclohexano-18-crown-6

Mami ONIZAKI, Kotaro MORITA, Naoki HIRAYAMA

著者情報

キーワード: Synergistic effect, ion-pair extraction, strontium, tri-n-octylphosphine oxide, dicyclohexano-18-crown-6

ジャーナルフリー

2016 年 32 巻 12 号 p. 1367-1370

DOI https://doi.org/10.2116/analsci.32.1367

詳細

抄録

The co-use of two neutral ligands, tri-n-octylphosphine oxide (TOPO) and dicyclohexano-18-crown-6 (DC18C6), for ion-pair extraction of divalent strontium (Sr²⁺) with bis(trifluoromethanesulfonyl)imide anion (Tf₂N^–) showed unique synergistic effect. The extracted species in use of a single ligand is Sr(TOPO)₃²⁺·2Tf₂N^– or Sr(DC18C6)²⁺·2Tf₂N^–, whereas the co-use resulted in extraction enhancement based on additional formation of Sr(DC18C6)(TOPO)²⁺·2Tf₂N^– and Sr(DC18C6)(TOPO)₂²⁺·2Tf₂N^–.

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