ID | 116827 |
著者 |
Wada, Riona
Tokushima University
Yanase, Masatoshi
Tokushima University
Tomiyama, Erina
Tokushima University
Higuchi, Keiro
Ogawa & Co., Ltd.
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キーワード | Amplitude modulated flow analysis
flow rate modulation
triangular-wave control
fast Fourier transform
saturated signal
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資料タイプ |
学術雑誌論文
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抄録 | We have applied our amplitude-modulated flow analysis concept to extend the dynamic range to saturated analytical signals. Sample solution, the flow rate FS of which is periodically varied with a triangular control signal Vc, is merged with a reagent solution delivered at a constant flow rate FR. While the total flow rate FT is kept constant, a diluent with FT – (FS + FR) flow rate is aspirated from the third channel. The analytical signal Vd obtained downstream is processed by fast Fourier transform to obtain the amplitudes of the wave components in Vd. When the sample concentration CS is low, Vd shows a triangular profile like Vc; the sum of the amplitudes ΣA is proportional to CS. When CS is high, Vd shows a trapezoidal profile because of the Vd saturation. A linear calibration curve can also be obtained for such saturated signals by plotting CSΣA against CS. The proof of the concept is validated by applying it to spectrophotometric determinations of a dye (Methylene Blue) and colored complexes of Fe2+−phenanthroline and Fe3+−Tiron.
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掲載誌名 |
Analytical Sciences
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ISSN | 13482246
09106340
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cat書誌ID | AA10500785
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出版者 | The Japan Society for Analytical Chemistry|Springer Nature
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巻 | 38
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号 | 5
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開始ページ | 795
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終了ページ | 802
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発行日 | 2022-03-17
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備考 | This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use (https://www.springernature.com/gp/open-research/policies/accepted-manuscript-terms), but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s44211-022-00097-4
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言語 |
eng
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著者版フラグ |
著者版
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部局 |
薬学系
理工学系
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