2015年8月
Analyte-Size-Dependent Ionization and Quantification of Monosaccharides in Human Plasma Using Cation-Exchanged Smectite Layers
ANALYTICAL CHEMISTRY
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- 巻
- 87
- 号
- 15
- 開始ページ
- 7944
- 終了ページ
- 7950
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acs.analchem.5b01770
- 出版者・発行元
- AMER CHEMICAL SOC
Smectite, a synthetic inorganic polymer with a saponite structure, was subjected to matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS). Typical organic matrix molecules 2,4,6-trihydroxyacetophenone (THAP) and 2,5-dihydroxybenzoic acid (DHBA) were intercalated into the layer spacing of cation-exchanged smectite, and the complex was used as a new matrix for laser desorption/ionization mass spectrometry. Because of layer spacing limitations, only a small analyte that could enter the layer and bind to THAP or DHBA could be ionized. This was confirmed by examining different analyte/matrix preparation methods and by measuring saccharides with different molecular sizes. Because of the homogeneous distribution of THAP molecules in the smectite layer spacing, high reproducibility of the analyte peak intensity was achieved. By using isotope-labeled C-13(6)-d-glucose as the internal standard, quantitative analysis of monosaccharides in pretreated human plasma sample was performed, and the value of 8.6 +/- 0.3 mu g/mg was estimated.
- リンク情報
- ID情報
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- DOI : 10.1021/acs.analchem.5b01770
- ISSN : 0003-2700
- eISSN : 1520-6882
- Web of Science ID : WOS:000359277900063