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The control of diffuse pollution requires information on the transport processes of those pollutants within a catchment. The characteristics of diffuse nitrogen and phosphorus discharged from a typical rural-agricultural catchment dominated by residential areas, sloping cropland, and forest land were monitored in the hilly area of the upper Yangtze River, China, and analyzed based on a total of eight...
In order to increase the recoveries of steroid estrogens (SEs) for quantitative determination in sewage, response surface methodology (RSM) was adopted to optimize the solid-phase extraction (SPE) procedure. Quadratic models were established for predicting SE recoveries, and the effectiveness of models and the interaction of factors were analyzed. SE concentrations of typical sewage treatment plants...
Guangdong TiO2-SiO2 (TiO2 supported on SiO2) photocatalysts were prepared using an ultrasonic-assisted sol-gel method. These photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and photoluminescence spectra (PL). Their photocatalytic activities were investigated by the method of methyl orange oxidation. It...
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