Show the presence of sharp high-intensity bands characteristic with the low molecular weight modifiers--1,4-hydroquinone and

Show the presence of sharp high-intensity bands characteristic with the low molecular weight modifiers–1,4-hydroquinone and 2-methyl-1,4-hydroquinone.The shapes from the 13C-NMR spectra had been typical for coal HA [21,368]. They are The shapes of the 13 C-NMR spectra had been typical for coal HA [21,368]. They may be characterized by high spectral intensity within the array of alkyl chains (05 ppm), aromaticAgronomy 2021, 11,This can be indicative of your presence of this structural group in the resulting derivative. For the spectra of hydroquinone derivative–CHP-HQ and FA-HQ you will find adjust inside the ratio of your intensities from the regions at 10820 and 12035, which can clarify the occurrence of a fragment of hydroquinone within the modification, which includes a signal at 115 ppm. Common FTIR spectra are shown in Figure three. The spectra of each CHP and FA deriva-16 8 of tives didn’t show the presence of sharp high-intensity bands characteristic on 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), 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 in the Leukotriene D4 custom synthesis carboxylate anion. An intense 1500550 cm-1 and 1350400 cm-1 characteristic from the carboxylate anion. An intense and and peak in the in the of 1000 cm-1 is often may be AEBSF Biological Activity attributed to silicate impurities of the broad broad peak region region of 1000 cm-1attributed to silicate impurities in 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 may be attributed to of signals of stretching with the C-H 2960, 2880 2960,, 2880 cm ,be attributed towards the signals thestretching vibrations vibrations of your C-H methyl group within the The information of data spectroscopy are indicative with the formethyl group within the modifier.modifier. The FTIR of FTIR spectroscopy are indicative in the formation of modified derivatives of CHP and FA, even though they be viewed as as a mere mation of modified derivatives of CHP and FA, although they cannotcannot be deemed as a mere superposition from the compounds. superposition of your startingstarting compounds. Optical properties the HS derivatives synthesized in this operate were characterized Optical properties ofof the HS derivatives synthesized in this work had been characterized using UV-vis and fluorescence spectroscopy. The spectra of HA and FA derivatives with utilizing UV-vis and fluorescence spectroscopy. The spectra of HA and FA derivatives with naphthoquinones include characteristic absorption bands of individual 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 same,the identical, the characteristicderivatives with hydroquihydroquinones wer.