Hydrophobically modified Y-zeolites were prepared by simple modification with triethoxyfluorosilane (TEFS). These zeolites, used as supports, enhanced the efficiency of deposited TiO(2) for the photocatalytic degradation of organics diluted in water.

S. Liu, L. M. Russell, D. T. Sueper, and T. B. Onasch Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, USA Cooperative Institute for Research in Environmental Studies, University of Colorado, Boulder, Colorado, USA Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, Massachusetts, USA Chemistry Department, Boston College, Che...

this study was performed to explore the presence of heavy metals in some popular herbal medicines of the iranian market. primarily, this study was planned to do the task by the usp method. in the second step, those plants which contained more than 10 ppm of total heavy metals were analyzed by atomic absorption method. in this study, 43 popular herbal medicines were investigated according to the...