Show the presence of sharp high-intensity bands characteristic in the low molecular weight modifiers–1,4-hydroquinone and 2-methyl-1,4-hydroquinone.The D-Sedoheptulose 7-phosphate In stock shapes in the 13C-NMR spectra had been common for coal HA [21,368]. They may be The shapes of your 13 C-NMR spectra had been common for coal HA [21,368]. They’re characterized by high spectral intensity inside the range of alkyl chains (05 ppm), aromaticAgronomy 2021, 11,This can be indicative from the presence of this structural group in the resulting derivative. For the spectra of hydroquinone derivative–CHP-HQ and FA-HQ you will discover transform within the ratio from the intensities of the regions at 10820 and 12035, which can explain the occurrence of a fragment of hydroquinone in the modification, which has a signal at 115 ppm. Standard FTIR spectra are shown in Figure three. The spectra of each CHP and FA deriva-16 eight of tives did not show the presence of sharp high-intensity bands characteristic with the low molecular weight modifiers–1,4-hydroquinone and 2-methyl-1,4-hydroquinone.Figure 3. 3. FTIR spectra the the parent humic acids (CHP), fulvic acids (FA), Zebularine Activator derivatives with diFigure FTIR spectra of of parent humic acids (CHP), fulvic acids (FA), and and derivatives with hydroxybenzenes (1,4-hydroquinone and and 2-methyl-1,4-hydroquinone). dihydroxybenzenes (1,4-hydroquinone 2-methyl-1,4-hydroquinone).The FTIR spectra CHP and its derivatives show two broad absorption peaks at the FTIR spectra ofof CHP and its derivatives show two broad absorption peaks at 1500550 cm-1 and 1350400 cm-1 characteristic of the carboxylate anion. An intense 1500550 cm-1 and 1350400 cm-1 characteristic on the carboxylate anion. An intense and and peak in the within the of 1000 cm-1 could be may be attributed to silicate impurities of the broad broad peak region region of 1000 cm-1attributed to silicate impurities of the parent parent potassium The spectra ofspectra of FA are characterized with intense absorption potassium humate. humate. The FA are characterized with intense absorption peaks at -1 peaks at cm-1 which can which could be attributed to of signals of stretching on the C-H 2960, 2880 2960,, 2880 cm ,be attributed to the signals thestretching vibrations vibrations from the C-H methyl group inside the The information of data spectroscopy are indicative on the formethyl group inside the modifier.modifier. The FTIR of FTIR spectroscopy are indicative from the formation of modified derivatives of CHP and FA, when they be considered as a mere mation of modified derivatives of CHP and FA, though they cannotcannot be thought of as a mere superposition in the compounds. superposition from the startingstarting compounds. Optical properties the HS derivatives synthesized in this work had been characterized Optical properties ofof the HS derivatives synthesized in this operate were characterized working with UV-vis and fluorescence spectroscopy. The spectra of HA and FA derivatives with working with UV-vis and fluorescence spectroscopy. The spectra of HA and FA derivatives with naphthoquinones include characteristic absorption bands of person quinones and naphthoquinones contain characteristic absorption bands of individual quinones and hyhydroquinones. The spectra CHP CHP derivatives of 2-hydroxy-1,4-naphthoquinone droquinones. The spectra of theof the derivatives of 2-hydroxy-1,4-naphthoquinone concontain a peak at 260 nm. In the characteristic bands for bands for derivatives with tain a peak at 260 nm. In the similar,the same, the characteristicderivatives with hydroquihydroquinones wer.