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2004 | 07 | 2 |
Tytuł artykułu

Chemiluminescence imaging of the formation and photodegradation of humic acid derived from 5-hydroxy-1,4-naphthoquinone [juglone]

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A new model humic acid (HA) have been synthetized from 5-hydroxy-1,4-naphthoquinone (juglone, J), an allelopathic compound occuring in leaves, nut shells, exsudates of roots and barks of Juglans genera. Aqueous solutions of J were autooxidised at different pH 6-10 with mineral matrices: bentonite, glass and silica. The very slow autooxidation reaction was monitored by means of chemiluminescence (CL) imaging and kinetics supported by a highly sensitive CCD camera Molecular Light Imager. In the course of autooxidation that lasted three weeks, an extremely low-intensity of CL was detected The reaction liquid was further treated according to the IHSS protocol to isolate humic acid fractions. Elemental analysis, UV-VIS and FTIR absorption spectra as well as fluorescence excitation and emission spectra were measured to characterise this new HA.
Wydawca
-
Rocznik
Tom
07
Numer
2
Opis fizyczny
http://www.ejpau.media.pl/series/volume7/issue2/environment/art-04.html
Twórcy
autor
  • Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland
autor
autor
autor
Bibliografia
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  • www.ansci.cornell.edu/courses/as625/1999term/boyer/juglone.html
  • www.ansci.cornell.edu/courses/as625/1999term/boyer/
Typ dokumentu
Bibliografia
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