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ID 25966
本文ファイル
著者
Nakatani, Nobutake
Kozaki, Daisuke
Masuda, Wakako
Hasebe, Kiyoshi
Mori, Masanobu
キーワード
ion-exclusion chromatography
phosphate ion
silicate ion
molybdenum-blue
river water
NDC
生物科学・一般生物学
抄録(英)
The simultaneous spectrophotometric determination of phosphate and silicate ions in river water was examined by using ion-exclusion chromatography and post-column derivatization. Phosphate and silicate ions were separated by the ion-exclusion column packed with a polymethacrylate-based weakly acidic cation-exchange resin in the H+-form (TSKgel Super IC-A/C) by using ultra pure water as an eluent. After the postcolumn derivatization with molybdate and ascorbic acid, so-called molybdenum-blue, both ions were determined simultaneously by spectrophotometry. The effects of sulfuric acid, sodium molybdate and ascorbic acid concentrations and reaction coil length, which have relation to form the reduced complexes of molybdate and ions, on the detector response for phosphate and silicate ions were investigated. Under the optimized conditions (color-forming reactant, 50 mM sulfuric acid-10 mM sodium molybdate; reducing agent, 50 mM ascorbic acid; reaction coil length, 6 m), the calibration curves of phosphate and silicate ions were linear in the range of 50 - 2,000 μg L-1 as P and 250 - 10,000 μg L-1 as Si. This method was successfully applied to water quality monitoring of Kurose-river watershed and it suggested that the effluent from a biological sewage treatment plant was significant source of phosphate ion in Kurose-river water.
掲載誌名
Analytica Chimica Acta
619巻
1号
開始ページ
110
終了ページ
114
出版年月日
2008-06-30
出版者
Elsevier Science BV
ISSN
0003-2670
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2008 Elsevier B.V.
関連情報URL
部局名
国際協力研究科