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http://dx.doi.org/10.1016/j.scitotenv.2016.05.119 | DOI Listing |
Environ Pollut
September 2025
State Key Laboratory of Water Pollution Control and Green Resource Recycling, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China. Electronic address:
o,p'-dichlorodiphenyltrichloroethane (2,4'-DDT) is a typical persistent organic pollutant (POP) characterized by environmental persistence and acute toxicity. Its pronounced hydrophobicity drives preferential adsorption onto suspended particulate matter (SPM) in aquatic systems. This study systematically investigated the photochemical transformation mechanism of 2,4'-DDT in the Pearl River SPM-water system.
View Article and Find Full Text PDFInt J Biol Macromol
September 2025
"Materials + Technologies" Research Group (GMT), Department of Chemical and Environmental Engineering, Faculty of Engineering of Gipuzkoa, University of Basque Country UPV/EHU, Donostia-San Sebastian, 20018, Spain. Electronic address:
Colloidal Lignin Particles (CLPs), with their polyphenolic structure, are promising sustainable alternatives to chemical UV filters. This study investigates the photochemical behavior of CLPs under ultraviolet irradiation synthetized from five different technical raw lignins (Alkali, Organosolv, two Enzymatic Hydrolyzed and Softwood Kraft Lignin) via solvent-shift procedure. The suspensions were irradiated using a self-developed UV-pen set-up and a commercially available UV chamber, enabling controlled UV exposure over time.
View Article and Find Full Text PDFEnviron Sci Technol
September 2025
Department of Chemistry & Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada.
Road dust, which consists of brake and tire wear, pavement particles, crustal material, semivolatile vehicle exhaust components, and natural organic matter, can contribute to both airborne particulate matter and urban runoff. To date, research has mainly focused on the health impact of road dust, but little work has been conducted to characterize its role as a reactive surface in the environment. Our group has previously shown that illuminated road dust is a source of singlet oxygen, an important environmental oxidant.
View Article and Find Full Text PDFChem Rec
September 2025
Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 532 10, Czechia.
The last decade unveiled dicyanopyrazine as a purely organic photocatalyst capable of initiating a variety of unprecedented photoredox transformations. The latest discoveries also pointed to a facile Mallory-type photocyclization of the catalyst to quinoxaline-2,3-dicarbonitrile derivative, which proved to be the active catalytic species. Its principal photochemical properties involve the absorption band covering the blue spectral region, a sufficiently long-lived triplet, and the reversible first reduction accompanied by the formation of the corresponding radical anion.
View Article and Find Full Text PDFOrg Biomol Chem
September 2025
Centre for Synthesis and Chemical Biology, UCD School of Chemistry, University College Dublin, Ireland.
A photochemical carbosulfonylative protocol for the formation of C-S and C-C bonds between sulfinate salts and alkenes is reported. This approach couples two alkene molecules to give access to highly functionalized sp sulfone products. Homo-coupled and polarity mismatched cross-coupled products were obtained.
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