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ID 19967
Eprint ID
19967
フルテキストURL
著者
高柳 俊夫 岡山大学
Wada Eiko 岡山大学
本水 昌二 岡山大学
抄録
A simple, sensitive and separative method for the photometric determination of inorganic anions was developed on the basis of suppressed electroosmosis by using a common silica capillary and a simple migrating solution. During the analysis of analyte anions by capillary zone electrophoresis, electroosmotic flow in a silica capillary was suppressed by using low-pH migrating solutions containing sodium sulfate. The stacking effect of sulfate ion was utilized for analyte concentration. Four kinds of inorganic analyte anions examined were detected in sharp signals, and the separation of a nitrate and a nitrite ion was improved by using the low-pH migrating solution with no decrease in detection sensitivity. Calibration graphs for nitrate and nitrite ions showed good linearity in the concentration ranges from about 10(-5) to 10(-4)mol dm(-3), with the detection limit for nitrate ion 4×10(-6)mol dm(-3). Separations of organic anions, such as aromatic sulfonate and carboxylate ions, were also examined; many of them were well separated by the proposed migrating solution. Those organic anions did not interfere with the determination of the inorganic anions.
キーワード
Capillary zone electrophoresis
inorganic anion
direct photometric detection
suppressed electroosmosis
stacking effect
発行日
1996-08-10
出版物タイトル
Analytical Sciences
12巻
4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
575
終了ページ
579
ISSN
0910-6340
NCID
AA10500785
資料タイプ
学術雑誌論文
オフィシャル URL
http://www.journalarchive.jst.go.jp/english/jnlabstract_en.php?cdjournal=analsci1985&cdvol=12&noissue=4&startpage=575
言語
English
OAI-PMH Set
岡山大学
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
Sort Key
8