gelbstoffとは 意味・読み方・使い方

名詞

Gelbstoff (uncountable)

1. Alternative letter-case form of gelbstoff.
   • 1966, K. Kalle, “The Problem of the Gelbstoff in the Sea”, in Oceanography and Marine Biology: An Annual Review, volume 4, Boca Raton, Fla.: CRC Press, ISSN 0078-3218, OCLC 889372915, article title, page 91:

     The problem of the Gelbstoff in the sea

   • 1984, M. Ehrhardt, “Marine Gelbstoff”, in Otto Hutzinger, editor, The Natural Environment and the Biogeochemical Cycles (The Handbook of Environmental Chemistry; 1, part 1C), Berlin: Springer-Verlag, ISBN 978-3-540-13226-4; reprinted as Berlin; Heidelberg: Springer-Verlag, 2013, DOI:10.1007/978-3-540-38829-6, ISBN 978-3-662-15235-5, pages 63 and 67:

     [page 63] Kalle concluded that dissolved yellow substances contribute substantially to any deviation from the blue colour of pure water into the longer wavelengths region of the visible spectrum. […] Chemically the material defied unequivocal characterization, a situation which has remained essentially unchanged. Thus, for want of a systematic designation Kalle called the material "Gelbstoff", the German word for "yellow material". […] Marine Gelbstoff is a material formed in the sea wit certain spectral characteristics. It is not derived from terrestrial sources and appears to be composed of fulvic and humic components both of which are structrally different from their terrestrial counterparts. […] [page 67] These are more indications of an autochthonous origin of marine Gelbstoff supported by the interesting observation that Gelbstoff from a bog water precipitated within a week at room temperature when an equal amount of seawater was added to its solution.