Fulvic acid mediated photolysis of ibuprofen in water

Modelling the photochemical fate of ibuprofen in surface waters

“…Moreover, we detected IV in the system IBP + AQ2S that was irradiated under the UVA lamp, where the direct photolysis of IBP should be low to negligible. The same compound has been detected by Jacobs et al (2011) in the presence of irradiated fulvic acids, under conditions where the direct photolysis of IBP was negligible.…”

“…More recently, significant reactivity has been found between IBP and fulvic acids under irradiation (Jacobs et al, 2011). On the other hand, taking k 3CDOM*,IBP ∼ k 3Ri*,IBP = 4.5⋅10 7 M −1 s −1 , the reaction with 3 CDOM* would be minor even at high NPOC.…”

The role of Fe(III) on phosphate released during the photo-decomposition of organic phosphorus in deionized and natural waters

“…To determine the role of Fe 3þ as a natural photosensitizer toward the decomposition of organic phosphorus to release phosphate, the known $OH scavenger isopropanol was added to the photolysis experiments (Jacobs et al, 2011). While isopropanol is not the ideal $OH scavenger (due to its ability to react with other ROS), these data provide us with a rough estimate of the role of Fe 3þ in phosphate released from the photo-decomposition of organic phosphorus in natural water.…”

Photolytic and photocatalytic degradation of tetracycline: Effect of humic acid on degradation kinetics and mechanisms

“…HS may also quench ROS and adversely affect photolytic and photocatalytic degradation of organic compounds [20,21]. Thus, HS has been found to either enhance [16,22,23] or inhibit [15,19,[24][25][26] photolytic and photocatalytic degradation, depending on the balance between the opposite effects.…”