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ID 19947
Eprint ID
19947
フルテキストURL
タイトル(別表記)
Spectrophotometric determination of nitrate ion using nitrosation/FIA
著者
石 成瑞 岡山大学
本水 昌二 岡山大学
桐栄 恭二 岡山大学
抄録
N, N-Bis (2-hydroxypropyl) aniline (BHPA) reacts with nitrite ion in an acidic medium to form a red product, which has the maximum absorption at 500 nm. On the basis of this color reaction, FIA of nitrate was established. Nitrate ion could be reduced to nitrite ion by passing through the reduction column(2 mm×30 cm) packed with copperized cadmium {Cu(Cd) : particle size, about 0.5 mm}, which was installed just behind the sample injection valve. The carrier solution(10(-3) M EDTA, pH 8) and the reagent solution (8×10(-4) M BHPA, 0.35 M HCl, 0.15 M H(3)PO(4)) were propelled at the flow rate of 0.7 ml/min by using a double-plunger pump. The sample(120 μl) was injected into the carrier stream by using a 6-way injection valve. The reaction coil(0.5 mm×2 m) was kept in a thermostatically controlled water bath(80℃). The cooling coil(0.5 mm×50 cm), which was installed just behind the reaction coil, was kept in a water bath (tap water temperature). A calibration curve was linear up to 2×10(-4) M nitrate. The detection limit corresponding to S/N=2 was 10(-6) M nitrate, and the relative standard deviation (10 injections) was 0.4%, and the sampling rate was 40 samples per hour. Nitrate in river water at concentrations of 10(-5) M level was determined.
キーワード
FIA of nitrate
reduction of nitrate to nitrite on Cu (Cd) column
color reaction of nitrite with N
発行日
1987-03-05
出版物タイトル
分析化学
出版物タイトル(別表記)
Bunseki Kagaku
36巻
3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
207
終了ページ
209
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=36&noissue=3&startpage=207http://www.journalarchive.jst.go.jp/japanese/jnlabstract_ja.php?cdjournal=bunsekikagaku1952&cdvol=36&noissue=3&startpage=207
言語
Japanese
著作権者
The Japan Society for Analytical Chemistry
論文のバージョン
publisher
査読
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