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著作: 黒河 洋平/[竹内 政樹]/[田中 秀治]/Analytical Parameters for Amplitude Modulated Multiplexed Flow Analysis/[Analytical Sciences]

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222608
EOID
904837
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2018年5月14日(月) 14:10:25
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竹内 政樹
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竹内 政樹
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種別 必須 学術論文(審査論文)
言語 必須 英語
招待 推奨
審査 推奨 Peer Review
カテゴリ 推奨 研究
共著種別 推奨
学究種別 推奨 博士前期課程学生による研究報告
組織 推奨
著者 必須
  1. (英) Kurokawa Yohei / (日) 黒河 洋平 / (読) くろかわ ようへい
    役割 任意
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    学籍番号 推奨 ****
  2. 竹内 政樹([徳島大学.大学院医歯薬学研究部.薬学域.薬科学部門.創薬科学系.分析科学])
    役割 任意
    貢献度 任意
    学籍番号 推奨
  3. 田中 秀治([徳島大学.大学院医歯薬学研究部.薬学域.薬科学部門.創薬科学系.分析科学]/徳島大学薬学部創製薬科学科分析科学研究室/徳島大学大学院薬科学教育部分析科学分野)
    役割 任意
    貢献度 任意
    学籍番号 推奨
題名 必須

(英) Analytical Parameters for Amplitude Modulated Multiplexed Flow Analysis

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要約 任意

(英) Analytical conditions of amplitude-modulated multiplexed flow analysis, the basic concept of which was recently proposed by our group, are investigated for higher sample throughput rate. The performance of the improved system is evaluated by applying it to the determination of chloride ions. The flow rates of two sample solutions are independently varied in accordance with sinusoidal voltage signals, each having different frequency. The solutions are merged with a reagent solution and/or a diluent, while the total flow rate is held constant. Downstream, the analytical signal V(d) is monitored with a spectrophotometer. The V(d) shows a complicated profile resulting from amplitude modulated and multiplexed information on the two samples. The V(d) can, however, be deconvoluted to the contribution of each sample through fast Fourier transform (FFT). The amplitudes of the separated wave components are closely related to the concentrations of the analytes in the samples. By moving the window for FFT analysis with time, a temporal profile of the amplitudes can be obtained in real-time. Analytical conditions such as modulation period and system configuration have been optimized using aqueous solutions of Malachite Green (MG). Adequate amplitudes are obtained at the period of as low as 5 s. At this period, the calibration curve for the MG concentration of 0-30 micromol dm(-3) has enough linearity (r(2) = 0.999) and the limit of detection (3.3sigma) is 1.3 micromol dm(-3); the relative standard deviation of repeated measurements (C(MG) = 15 micromol dm(-3), n = 10) is 2.4%. The developed system has been applied to the determination of chloride ions by a mercury(II) thiocyanate method. The system can adequately follow the changes in analyte concentration. The recoveries of chloride ion spiked in real water samples (river and tap water) are satisfactory, around 100%.

キーワード 推奨
  1. (英) Chlorides
  2. (英) Flow Injection Analysis
  3. (英) Fourier Analysis
  4. (英) Spectrophotometry
  5. (英) Water
発行所 推奨
誌名 必須 Analytical Sciences([日本分析化学会])
(pISSN: 0910-6340, eISSN: 1348-2246)
ISSN 任意 1348-2246
ISSN: 0910-6340 (pISSN: 0910-6340, eISSN: 1348-2246)
Title: Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
Title(ISO): Anal Sci
Supplier: 社団法人 日本分析化学会
Publisher: Japan Society for Analytical Chemistry
 (NLM Catalog  (医中誌Web  (J-STAGE  (Scopus  (CrossRef (Scopus information is found. [need login])
必須 26
必須 7
必須 791 796
都市 任意
年月日 必須 2010年 7月 初日
URL 任意
DOI 任意 10.2116/analsci.26.791    (→Scopusで検索)
PMID 任意 20631441    (→Scopusで検索)
NAID 任意
WOS 任意 000280017000011
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指導教員 推奨
備考 任意
  1. (英) Article.Affiliation: Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima 770-8505, Japan.

  2. (英) Article.PublicationTypeList.PublicationType: Journal Article

  3. (英) Article.PublicationTypeList.PublicationType: Research Support, Non-U.S. Gov't