Xu, Xiaotong published the artcileFormation pathway of disinfection by-products of lignin monomers in raw water during disinfection, Synthetic Route of 645-56-7, the publication is Science of the Total Environment (2022), 153706, database is CAplus and MEDLINE.
In this study, the dissolved organic matter (DOM) profiles of water samples from a water source in northeastern China were analyzed by high-resolution mass spectrometry (HRMS), and its changes after chlorination were investigated. The results showed that lignin substances accounted for a significant proportion in DOM and chlorinated products and were the main precursors of disinfection byproducts (DBPs). During disinfection, macromol. DOM was transformed into small mols., and lignin substances have the most obvious and complex changes in reaction. Two lignin monomers 4-propylphenol (4PP) and 4-propylguaiacol (4PG) were used as model compounds to study their reaction kinetics and degradation pathways during disinfection. The degradation of both lignin monomers conformed to pseudo-first-order reaction kinetics, and the reaction rate constant of 4PG was higher than that of 4PP. The effects of chlorine dosage, pH and temperature on the degradation reaction kinetics of two lignin monomers were investigated. The degradation rates of 4PP and 4PG increased with increasing chlorine dosage, pH and temperature The two monomers showed similar properties in the chlorination degradation process, and generated multiple intermediates, which were mainly transformed into small mols. by chlorine electrophilic substitution and nucleophilic substitution, and further generated DBPs.
Science of the Total Environment published new progress about 645-56-7. 645-56-7 belongs to alcohols-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 4-Propylphenol, and the molecular formula is C11H15NO3, Synthetic Route of 645-56-7.
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