نتایج جستجو برای: simazine
تعداد نتایج: 259 فیلتر نتایج به سال:
Agricultural chemical transport to surface water and the linkage to other hydrological compartments, principally ground water, was investigated at five watersheds in semiarid to humid climatic settings. Chemical transport was affected by storm water runoff, soil drainage, irrigation, and how streams were linked to shallow ground water systems. Irrigation practices and timing of chemical use gre...
For the first time, Fe-doping (0.05, 1.0, and 2.5 wt.% Fe) was performed on a high-surface-area anatase/brookite TiO2 by adopting simple template-free sol-gel synthesis followed calcination at mild temperature. The powders’ textural surface properties were characterized following multi-technique approach. XRD analysis showed that ratio slightly varied in Fe-doped (from 76.9/23.1 to 79.3/22.7); ...
A high-performance liquid chromatography procedure or the determination of the herbicides simazine, propazine, bromacil, metoxuron, and hexazinone is elaborated. Stationary phases RP8 and RP18 and mixtures of methanol-water (2:1 and 1:1, v/v) as a mobile phase are applied for this purpose. The conditions for solid-phase extraction are established, allowing the separation of phenols and herbicid...
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