ID | 54377 |
フルテキストURL | |
著者 |
Karita, Shingo
岡山大学大学院自然科学研究科
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抄録 | We developed microfluidic paper-based analytical devices (μPADs) for the chelate titrations of Ca2+ and Mg2+ in natural water. The μPAD consisted of ten reaction zones and ten detection zones connected through narrow channels to a sample zone located at the center. Buffer solutions with a pH of 10 or 13 were applied to all surfaces of the channels and zones. Different amounts of ethylenediaminetetraacetic acid (EDTA) were added to the reaction zones and a consistent amount of a metal indicator (Eriochrome Black T or Calcon) was added to the detection zones. The total concentrations of Ca2+ and Mg2+ (total hardness) in the water were measured using a μPAD containing a buffer solution with a pH of 10, whereas only Ca2+ was titrated using a μPAD prepared with a potassium hydroxide solution with a pH of 13. The μPADs permitted the determination of Ca2+ and Mg2+ in mineral water, river water, and seawater samples within only a few minutes using only the naked eye—no need of instruments.
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キーワード | Chelate titration
Microfluidic paper-based analytical device
Hardness
Calcium
Magnesium
Natural water
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備考 | © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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発行日 | 2016-06-14
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出版物タイトル |
Analytica Chimica Acta
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巻 | 924巻
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出版者 | Elsevier B.V.
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開始ページ | 60
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終了ページ | 67
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ISSN | 0003-2670
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NCID | AA00524834
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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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OAI-PMH Set |
岡山大学
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著作権者 | © 2016 Elsevier B.V.
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論文のバージョン | author
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PubMed ID | |
DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1016/j.aca.2016.04.019
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