We believe that the minimal CDOM fluorescence quantum yield observed at [[lambda].sub.ex]~270-280 nm could be partially resulting from absorption of light by chromophoric
groups similar to aromatic amino acids, short peptides, or proteins and thus leading to reduction in humic-like fluorescence excited at this wavelength range.
The black spots are probably formed when catalyst residues from polymer synthesis, like titanium chloride (e.g., Ti[Cl.sub.3]) and chromium (Cr) particles, react with the phenolic antioxidant to produce chromophoric
species, such as titanium phenolates [34-37].
MDA levels were measured at 532 nm for the formation of stable chromophoric
with thiobarbituric acid (TBA).
This reaction has been utilized for creating colorimetric [13-15] and fluorescent [16-20] probes for sensing [H.sub.2][O.sub.2] by directly connecting boronic acid moiety with chromophoric
or fluorophoric compounds.
This assay is dependent on the reducing activity of test compound by an [O.sup.-.sub.2]-dependent reaction that releases chromophoric
Siegel, 2013: Global distribution and dynamics of chromophoric
dissolved organic matter.
44248, 33333 and 30864 [cm.sup.-1] were due to transition of ligand chromophoric
groups in the complex.
"The contribution of phytoplankton degradation to chromophoric
dissolved organic matter (CDOM) in eutrophic shallow lakes: field and experimental evidence".
This reaction is mediated by 30% NaOH which specifically transforms the substitution product obtained with GSH into a chromophoric
thione with the maximal absorbance at 400 nm .
The first spectrum (Figure 27, left) was recorded with an accelerating voltage of 24 kV, typical for the detection of chromophoric
elements in corundum (i.e.
The disappearance of the absorbance peak at 472 nm indicated an unequivocal signal of the nearly complete decolorization and the breakdown in the chromophoric
Reactive dyes are the only colorants designed to bond covalently with the fabrics.These dyes contain chromophoric
groups such as azo, anthraquinone, triarylmethane etc.