Effects of humic substances on photodegradation of bensulfuron-methyl on dry soil surfaces

Photocatalytic degradation of polycyclic aromatic hydrocarbons on soil surfaces using TiO2 under UV light

“…Humic acids (HAs) are complex organic molecules produced by the decomposition of plant and animals remained in soil, they can either enhance [29][30][31][32] or inhibit photolysis [33][34][35]. The influence of HA on the photocatalytic degradation of PAHs in the presence of TiO 2 on soil surfaces was investigated herein.…”

Influence of organic amendment on the adsorption and leaching of ethametsulfuron-methyl in acidic soils in China

“…Humic acid was extracted from another soil containing a higher organic carbon content according to conventional procedures based on NaOH extraction, precipitation by HCl to pH 2, mild purification by successive NaOH-dissolution and HCl-precipitation steps, water washing, and final freeze-drying (Si et al, 2004). The commercial peat used for the soil amended was obtained from Institute of Soil Science, Chinese Academy of Sciences.…”

Investigation of Pentachlorophenol Vertical Transportation in Soil Column During its Phototransformation on the Soil Surface

“…This might be attributed to the high organic matter content of 18%. Previous studies (Gong et al 2001;Romero et al 1998;Si et al 2004) have demonstrated that organic pollutants have lower photodegradation rate in the soils with higher organic matter content due Fig. 9 Average PCP concentrations (a) and water contents (b) in the moist silt soil with average initial water content of 19.7% without UV irradiation (initial PCP concentration: 20 mg/kg) to the photo-quenching effect of the organic matters.…”