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ID 47037
本文ファイル
著者
Yamamoto, Tomoyuki
Tsunemine, Yusuke
Hayakawa, Fumio
Hasanin, Tamer H. A.
Okamoto, Yasuaki 大学院理学研究科 広大研究者総覧
Ishizaka, Shoji 大学院理学研究科 広大研究者総覧
Fujiwara, Terufumi 大学院理学研究科
NDC
化学
抄録(英)
A flow chemiluminescence (CL) method combined with a liquid–liquid extraction technique is proposed for the indirect determination of antimony in aqueous samples using rhodamine B (RB). In the liquid–liquid extraction process, the antimony(V) chloro-complex anion, [SbCl6]−, was extracted from an aqueous acidic solution into toluene via ion-pair formation with the protonated RBH+ ion. Upon mixing the extract with a reversed micellar reagent solution of cetyltrimethylammonium chloride (CTAC) in 1-hexanol–cyclohexane/water (0.60 mol dm−3 H2SO4) containing cerium(IV), uptake of the ion-pair by CTAC reversed micelles occurred easily, followed by an oxidation reaction of RB with Ce(IV) in the CL process. The CL signal produced was then measured. Using a flow injection system, the detection limits (DL) of 0.25 μmol dm−3 Sb(III) and 0.20 μmol dm−3 Sb(V), and linear calibration graphs with dynamic ranges from the respective DLs to 16 μmol dm−3 for Sb(III) and Sb(V) were obtained under optimized experimental conditions. The proposed method was successfully applied to a mixture of Sb(III) and Sb(V), where total antimony, Sb(III) + Sb(V), was measured using ceric sulfate as an oxidant to oxidize Sb(III) to Sb(V) prior to extraction, Sb(V) was determined directly without the use of an oxidant, and Sb(III) was calculated by difference.
内容記述
This work was partially supported by a Grant-in-Aid for Scientific Research, No. 23550097, from the Ministry of Education, Science, Sports, and Culture, Japan.
掲載誌名
Analytical Sciences
29巻
1号
開始ページ
73
終了ページ
77
出版年月日
2013-01
出版者
The Japan Society for Analytical Chemistry
ISSN
0910-6340
1348-2246
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
2013 © The Japan Society for Analytical Chemistry
関連情報URL
部局名
理学研究科