Determination of trace metals forming large molecular complexes in natural waters as estimated by ultrafiltration/liquid chromatography/atomic spectroscopy.
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概要
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Concentration of trace metals forming complexes with large organic molecules in natural waters have been determined. Natural water samples (sea water and lake water) were filtered through a membrane filter (pore size: 0.45 μm) just after sampling, and concentrated by ultrafiltration. The concentrated natural water samples were fractionated by high performance gel filtration chromatography, and metal ion concentration in each fraction was determined by inductively coupled plasma atomic emission spectrometry and/or by graphite furnace atomic absorption spectrometry. Concentration of zinc forming large molecular complexes (LMC) in sea water was 0.07 ngmL<SUP>−1</SUP>, and that in lake water was 0.06 ngmL<SUP>−1</SUP>. Copper, iron, vanadium, and molybdenum forming LMC in natural waters were also determined. The present results suggest the existences of LMC-forming metal ions, some of which may be metalloenzymes dissolved in natural waters.
- 公益社団法人 日本化学会の論文
著者
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Kobayashi Kensei
Department Of Chemistry And Biotechnology Faculty Of Engineering Yokohama National University
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Haraguchi Hiroki
Department of Agricultural Chemistry, Faculty of Agriculture The University of Tokyo
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Kobayashi Kensei
Department of Physical Chemistry, Faculty of Engineering, Yokohama National University
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Akagi Tasuku
Department of Chemistry, Faculty of Science, The University of Tokyo
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