نتایج جستجو برای: determination of metals
تعداد نتایج: 21175736 فیلتر نتایج به سال:
Modern analytical methods today have been proven to be very useful for accurate determination of metals. It is required to determine optimum concentration of some essential metals as deficiency or excess may cause abnormalities in body. Also there is strict legal requirement to monitor and control levels of metals in food, environment and medicines. Estimation of concentration of metals in body...
Traditional medicines by medicinal plants have always played a key role in world health including Iran buttheir safety profile is a major concern in this regard. In fact some factors such as the method of extraction,contamination with microorganisms, existence of heavy metals, and pesticides may reduce the safety ofherbal based pharmaceutical products. The objective of this research was to dete...
the concentrations of some heavy metals in sediment from the sinop coasts of the black sea were measured to monitor metal pollution in 2013. the distribution of the heavy metals in sediments of the black sea shows a variable pattern. the objectives of the present study were to elucidate the distribution heavy metals such as cu, pb, zn, ni, mn, fe, as, cd, cr, hg and co in sediment from sinop co...
due to environmental problems caused by mining activities, it is necessary to study and investigation the concentrations of the pollutants caused by this activities such as heavy metals. the aim of this study is the determination of the concentration of heavy metals cu, pb and zn in roots of two species of artemisia including artemisia aucheri and artemisia sieberi in the surrounding natural la...
a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...
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