Effect of Polyhydric Phenols on the Phase Separation of an Aqueous Nonionic Surfactant Solution and the Cloud-point Extraction of Antimony(V)

DOI Web Site Web Site Open Access
  • IKEHATA Hiroki
    Graduate School of Natural Science and Technology, Kanazawa University
  • HIRAYAMA Naoki
    Graduate School of Natural Science and Technology, Kanazawa University Present address: Faculty of Science, Toho University
  • IMURA Hisanori
    Graduate School of Natural Science and Technology, Kanazawa University

Bibliographic Information

Other Title
  • 非イオン界面活性剤水溶液の相分離に及ぼす多価フェノールの効果とアンチモン(V)の曇り点抽出への応用
  • ヒイオン カイメン カッセイザイ スイヨウエキ ノ ソウ ブンリ ニ オヨボス タカ フェノール ノ コウカ ト アンチモン(Ⅴ)ノ クモリ テン チュウシュツ エ ノ オウヨウ

Search this article

Abstract

The cloud-point extraction (CPE) of Sb(V) with pyrogallol (H3PG) was studied using Triton®X-100 as a nonionic surfactant in sulfuric acid solutions. The phase separation of a 2% (v/v) Triton X-100 solution was studied with respect to the following parameters: H3PG and sulfuric acid concentrations, temperature, and heating time. The cloud point of the surfactant solution increased with an increase in the sulfuric-acid concentration, while it decreased with an increase in the H3PG concentration. The volume of the surfactant-rich phase after heating also decreased with the increase in the H3PG concentration. Consequently, the dehydration of the extractive phase, or the aggregation of micelles effectively occurred in the presence of H3PG. On the basis of such phase separation behavior, the CPE of Sb(V) was investigated using 2% (v/v) Triton X-100. More than 92% of Sb(V) was extracted to the surfactant-rich phase with 0.15 mol L−1 H3PG in 0.9 mol L−1 sulfuric acid by heating for 60 min at 70°C; a concentration factor of 20 was achieved. The Sb(V) species extracted was investigated by ESI-MS, and was found to be an ion-association complex, (H3O · </sub>n</sub>Triton X-100) · Sb(HPG)3.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 65 (2), 65-70, 2016

    The Japan Society for Analytical Chemistry

Related Projects

See more

Details 詳細情報について

Report a problem

Back to top