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ID 19950
Eprint ID
19950
フルテキストURL
タイトル(別表記)
Determination of cobalt by ion-pair liquid chromatography with 2-nitroso-1-naphthol-4-sulfonic acid
著者
沢谷 郁夫 岡山大学
大島 光子 岡山大学
本水 昌二 岡山大学
桐栄 恭二 岡山大学
抄録
Cobalt was spectrophotometrically determined as an anionic metal complex of 2-nitroso-1-naphthol-4-sulfonic acid (nitroso-NW acid) on a reversed-phase high-performance liquid chromatograph. An ODS column(4.6 mm i.d.×100 mm) was used, and the mobile phase consisted of 1.4×10(-2) M tetrabutylammonium bromide and phosphate buffer (pH 8,5×10(-3) M) in a mixture of 52 vol% methanol and 48 vol% distilled water. To 7.5ml of sample solution, 1 ml of citrate buffer solution(2 M, pH 5.4) and 1 ml of nitroso-NW acid(4×10(-3) M) were added. After 10 min, 0.5 ml of 2×10(-3) M EDTA was further added, and the resultant solution was diluted to 10 ml with distilled water. One hundred μl of the solution was injected on to the column. Detection was made on a UV detector at 368 nm. The calibration curve was linear in the range of (125)×10(-7) M of cobalt. By the proposed method, cobalt contents in four commercial nickel salts, Ni(NO(3))(2) · 6H(2)O, NiSO(4) (NH(4))(2) SO(4)·6H(2)O, NiSO(4)·6H(2)O, and NiCl(2)·6H(2)O, were determined to be (0.0030.06)% with relative standard deviation of 1.3% (seven determinations of the nitrate salt).
キーワード
determination of cobalt in nickel salts
anionic complex of cobalt-2-nitroso-1-naphthol-4-sulfonic acid
reversed-phase ion-pair liquid chromatography
発行日
1984-02-05
出版物タイトル
分析化学
出版物タイトル(別表記)
Bunseki Kagaku
33巻
2号
出版者
日本分析化学会
出版者(別表記)
The Japan Society for Analytical Chemistry
開始ページ
119
終了ページ
121
ISSN
0525-1931
NCID
AN00222633
資料タイプ
学術雑誌論文
オフィシャル URL
http://www.journalarchive.jst.go.jp/japanese/jnlabstract_ja.php?cdjournal=bunsekikagaku1952&cdvol=33&noissue=2&startpage=119http://www.journalarchive.jst.go.jp/japanese/jnlabstract_ja.php?cdjournal=bunsekikagaku1952&cdvol=33&noissue=2&startpage=119
言語
Japanese
著作権者
The Japan Society for Analytical Chemistry
論文のバージョン
publisher
査読
有り