نتایج جستجو برای: toxic elements including li
تعداد نتایج: 1315773 فیلتر نتایج به سال:
abstruct anzali wetland in north of guilan provience is an international important wetland that is recorded in ramsar convension. pollution is one of the major problems facing this wetland. in order to investigate the pollution situation, sediment core samples were taken in 7 stations in 4 districts within the wetland, namely abkenar, siakishom, hendekhale and shijan). elements were determined ...
Iron has outstanding biological importance as it is required for a wide variety of essential cellular processes and, as such, is a vital nutrient. The element holds this central position by virtue of its facile redox chemistry and the high affinity of both redox states (iron II and iron III) for oxygen. These same properties also render iron toxic when its redox-active chelatable 'labile' form ...
in this study the environmental problems has been studied in south east of tehran (bibi shahrbanou mount). 31 sediment samples were taken from 10-15 cm extremity of streams and were analyzed by icp. toxic elements studied include: ag, as, cd, cr, cu, ni, pb, sb and zn. the samples were also investigated for mineralogy using xrd. the clay mineral assemblage encountered in the analyzed samples is...
In this study, theoretical investigations of Li2MSiO4 family cathode materials, including Li2MnSiO4, Li2FeSiO4, Li2CoSiO4, and Li2NiSiO4 are performed using density functional theory (DFT), by GGA and GGA+U methods. The materials properties including electrical conductivity and rate cap...
Lithium (Li), the lightest of the alkali elements, has geochemical properties that include high aqueous solubility (Li is the most fluid mobile element) and high relative abundance in basalt-forming minerals (values ranking between 0.2 and 12 ppm). Li isotopes are particularly subject to fractionation because the two stable isotopes of lithium-7Li and 6Li-have a large relative mass difference (...
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