نتایج جستجو برای: heavy metal poisoning
تعداد نتایج: 332845 فیلتر نتایج به سال:
poisoning. Gradually the patient became drowsy and developed ptosis, glossitis, stomatitis, alopecia, Mees lines, head tremor and nystagmus. His blood thallium level was 40,980 g/ml and urine 608 g/ml. He was treated with hemodialysis, potassium, laxatives and high-dose multivitamins. Gradually his sensorium improved, and ptosis and head tremor disappeared, but he developed grade 3 quadripleg...
background: evaluation on the toxicity of two mainly contaminant heavy metals, cadmium (cd) and lead (pb) through the food chain was the aim of this study. methods: a total number of 270 healthy common carp (4±1.14 g) in april, 2015 transported to the khatam alanbia university of technology, behbahan, iran. fishes were divided into three groups and transferred to the 20 l aquaria each containin...
در این تحقیق استخراج میکروبی فلز روی از کنستانتره پر عیار سولفیدی روی مورد بررسی قرار گرفت.از میان باکتری های رایج در استخراج میکروبی، باکتری اسیدوتیو باسیلوس فراکسیدانس مورد استفاده قرار گرفت. این پروژه در 3 مرحله دنبال شد. در مرحله اول سینتیک رشد باکتری مذکور مورد ارزیابی قرار گرفت و نشان داده شد که داده های بدست آمده ازمعادلات جونزوکلی ii، تیزیر و مونود اکسپنانشیالی در پیش بینی رشد سلولی تط...
the pollution of water environments is a challenging issue especially in developing countries. contamination of drinking water with heavy metals has been reported in many parts of the world. arsenic, chromium and lead are dangerous heavy metals and also common contaminants of drinking water. in this study, the capacity and performance of the surfactant-modified sabzevar natural nanozeolite (sms...
heavy metal concentrations in surface water, wastewater and sediments collected from mighan lake in markazi province, iran were analyzed, and assessment contamination were evaluated according to the water and sediment quality guidelines. the results showed that the average concentrations of heavy metals in water were ranked as: ni> cr> pb> fe> cu> zn. in comparison with results the background v...
the removal of copper (ii), zinc (ii), and chromium (iii) from wastewater by carrot residues(cr) was investigated to evaluate cation exchange capacity. the effects of solution ph and co- ions werestudied in batch experiments. adsorption equilibria were initially rapidly established, and then decreasedmarkedly after 10 min. column experiments were carried out in a glass column filled with cr toe...
bioaccumulation of heavy metals in the skulls of black-striped field mice (apodemusagrarius) was compared for two localities in serbia differing in the level of pollution. eight heavy metals: fe, mn, co, cd, zn, ni, pb and cu, were quantitatively analyzed by atomic absorption spectrophotometry.four of them (mn, cd, fe and ni) showed significantly higher concentrations at the polluted location t...
considering the point that the existence of heavy metals in the wastewater are so dangerous forthe environment and it would have many bad consequences for all the creatures including human beings, wemust try out the ways that make us capable of adsorbing these heavy metals. in order to accomplish this goal we should use a method called adsorbing. in this study the adsorption of copper ions in h...
in this study metal oxide nano powder namely nio nanopowder was prepared .the producedmetal oxide was characterized and used as potential adsorbent for the removal of pb and zn from aqueoussolution. the rate of uptake of the pb and zn are rapid in the beginning and the time required for equilibrium adsorption is 120 min .the time of equilibrium as well as time required to achieve a definite fra...
microbial cells have been successfully used as biosorbents to remove heavy metals from wastewater. in some cases, dead cells appear to offer more advantages than living cells in the removal and recovery of heavy metal ions from industrial wastewater. maintaining higher biosorption capability and understanding the biosorption properties of dead cells are the keys to heavy metal removal and recov...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید