このエントリーをはてなブックマークに追加
ID 19982
Eprint ID
19982
フルテキストURL
著者
本水 昌二 岡山大学
Hazaki, Yoshito 岡山大学
大島 光子 岡山大学
桐栄 恭二 岡山大学
抄録
Anionic surfactants in water were determined by a spectrophotometric flow injection technique coupled with solvent extraction. The ion associate which formed between an anionic surfactant and an cationic azo dye was extracted into an organic solvent and the absorbance was measured. The carrier was distilled water, and the reagent solution contained an cationic azo dye and sodium sulfate, the pH of which being adjusted to 5 with acetate buffer. A phase separator with a poly(tetrafluoroethylene) porous membrane (0.8μm pore size) was used to separate the organic phase. Six derivatives of cationic azo dyes and several extracting solvents were examined; a pair of 1-methyl-4-(4-diethylaminophenylazo)- pyridinium cation and chloroform turned out best. The sampling rate was 30 samples per hour. Calibration graphs were linear up to 2×10(-6)M or 3×10(-5)M of anionic surfactant when injection volume was 300 or 100μl, respectively. The relative standard deviation(n=10) was 1.5% for 300μl of 1×10(-6)M sodium dodecylsulfate. The detection limit was as little as 1×10(-8)M of anionic surfactant. Anionic surfactants in river water were determined satisfactorily.
キーワード
Anionic surfactant determination
cationic azo dye
ion associate extraction
spectrophotometry
flow injection analysis
発行日
1987-06-10
出版物タイトル
Analytical Sciences
3巻
3号
出版者
日本分析化学会
出版者(別表記)
Japan Society for Analytical Chemistry
開始ページ
265
終了ページ
269
ISSN
0910-6340
NCID
AA10500785
資料タイプ
学術雑誌論文
言語
English
著作権者
日本分析化学会
論文のバージョン
publisher
査読
有り
DOI