ID | 19969 |
Eprint ID | 19969
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フルテキストURL | |
著者 |
本水 昌二
岡山大学
Susanto, Joko P.
岡山大学
大島 光子
岡山大学
三笠 博司
RC Research Laboratory, Tokuyama Co., Ltd
Hori, Yoshikazu
RC Research Laboratory, Tokuyama Co., Ltd
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抄録 | A sensitive spectrophotometric method for the determination of ultra-trace amounts of phosphate ion is proposed. The colored ion associate formed between molybdophosphate and Malachite Green (MG) was filtered through a tiny membrane filter (cellulose nitrate; poresize, 1.0μm; 9mm diameter), dissolved together with the membrane filter in 1cm(3) or less of Methyl Cellosolve; the absorbance of the solution was then measured at 627nm with a flow-through system equipped with an autosampler. The absorbance, the standard deviation and the relative standard deviation of the reagent blank were 0.0270, 0.0005 and 1.8%, respectively. A calibration graph was linear over the range from 0.018 to 1.0ng cm(-3) (1ppb) of phosphorus using 40cm(3) of sample solutions; the detection limit corresponding to two-times the standard deviation of the reagent blank was 3ppt of phosphorus. By using the proposed method, phosphate ion in pure water samples were determined.
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キーワード | Phosphate determination
filtration-dissolution
molybdophosphate-Malachite Green ion associate
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発行日 | 1995-02-10
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出版物タイトル |
Analytical Sciences
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巻 | 11巻
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号 | 1号
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出版者 | 日本分析化学会
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出版者(別表記) | Japan Society for Analytical Chemistry
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開始ページ | 155
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終了ページ | 160
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ISSN | 0910-6340
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NCID | AA10500785
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資料タイプ |
学術雑誌論文
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言語 |
英語
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著作権者 | 日本分析化学会
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論文のバージョン | publisher
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査読 |
有り
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DOI |