Determination of a small amount of a biological constituent by use of chemiluminescence. IX Effect of a ligand on a peak shape.
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概要
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The chemiluminescence intensity of a 1,10-phenanthroline-hydrogen peroxide system was systematically examined in the presence of various types of copper(II) chelate-forming ligands. There was a good relation between the peak shape on a recorder chart and the types of ligands; they could be classified into four groups as follows: A) Both bidentate and tridentate ligands gave positive and negative peaks. B) The ligand having more than four donor atoms, as in a quadridentate ligand or protein, gave a single negative peak. C) A liberated porphine ring gave a single sharp negative peak. D) Some metal organic compounds such as vitamine B-12 and ferritin gave broader positive and negative peaks in comparison with those in A). These unique peak shapes were applicable to the estimation of the type of ligand. α-Fetoprotein as a tumor marker could be also easily detected with a detection limit of 250 pg and with a typical coefficient of variation of 3.8%.
- 公益社団法人 日本化学会の論文
著者
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Hara Tadashi
Department Of Chemical Engineering And Materials Sciences Faculty Of Engineering Doshisha University
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Arai Akihiro
Department of Chemical Engineering, Faculty of Engineering, Doshisha University
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Iharada Takeshi
Department of Chemical Engineering, Faculty of Engineering, Doshisha University
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