نتایج جستجو برای: respectively by increasing concentration of heavy metals at 10 mglit

تعداد نتایج: 21905955  

Journal: :journal of rangeland science 2013
mahdieh ebrahimi mohammad jafari gholam reza savaghebi hossein azarnivand ali tavili

environmental pollution with heavy metals is a global disaster that is related tohuman activities. this study was conducted to determine the extent of heavy metalsaccumulation by plant species in lia industrial city (qazvin, iran) and to investigate theremediative capacity of native plant species grown in the contaminated soils. soil andindustrial wastewater sampling was done radially along tra...

Journal: :بهره برداری و پرورش آبزیان 0
عبدالرضا جهانبخشی دانشگاه علوم کشاورزی و منابع طبیعی گرگان سید علی اکبر هدایتی دانشگاه علوم کشاورزی و منابع طبیعی گرگان شیدا احمدوند فارغ التحصیل دانشگاه علوم کشاورزی و منابع طبیعی گرگان

chemical pollutants presence in water may induce severe ecological consequences and consequently affecting aquatic ecosystems integrity. heavy metals are dangerous pollutants for aquatic inhabitants that have a great stability. heavy metals contamination (pollution) of the surface waters happens widely by discharge of mill effluents. the objective of the present study was to determine the 50% l...

Journal: :international journal of environmental research 2010
m.k. ahmad s. islam m.s. rahman m.r. haque m.m. islam

the spatial and temporal distribution of heavy metals in water, sediment and fish (dry weight basis) of buriganga river, bangladesh were determined by atomic absorption spectrophotometer. in water concentration of pb, cd, ni, cu and cr varied seasonally and spatially from 58.17 to 72.45î¼g/l, 7.08 to 12.33î¼g/l, 7.15 to 10.32î¼g/l, 107.38 to 201.29î¼g/l and 489.27 to 645.26î¼g/l, respectively. ...

Journal: :health scope 0
dariush naghipour department of environmental health engineering, faculty of health, guilan university of medical sciences, rasht, ir iran abdoliman amouei department of environmental health engineering, babol university of medical sciences, babol, ir iran; department of environmental health engineering, babol university of medical sciences, babol, ir iran. tel: +98-1112234366, fax: +98-1112234367 shahrokh nazmara department of environmental health engineering, tehran university of medical sciences, tehran, ir iran

materials and methods a total of 40 different bread types such as barbari, sangak, lavash, and baguette produced in 124 bakery shops in rasht city were analyzed for some heavy metals (as, cd, pb, cr, ni, and co) by inductive coupled plasma (icp) instrument (icp-qes). results the mean content of the as, cd, and pb in different breads were respectively as follows: barbari, 0, 0.73, and 0.07; sang...

Extended abstract 1- Introduction Desert dust is formed under the influence of special weather and environmental conditions in desert areas and enters the atmosphere. Local hurricanes caused by surface air instability, passing through dry deserts, remove silt and sand particles from the surface and enter the atmosphere. Desert dust physically, in addition to its ecological effects such as lun...

Cheraghi, M., Reyahi-Khoram , M., Setayesh-Shiri , F.,

The aim of this research was to determine the concentration of cadmium (Cd) and lead (Pb) in the muscle and liver tissues of rainbow trout (Oncorhynchus mykiss) in Hamedan Province (west of Iran) cold water fish farms, and compare the results with the FAO/WHO guidelines. Heavy metal concentrations were determined from the three randomly selected fish farms by Inductively Coupled Plasma Optical ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و زبانهای خارجی 1390

the aim of this study was to identify the problems of translating markedness structures from english to persian in order to look closely at what possible difficulties translators may face. it also seeks to probe the strategies applied accordingly by iranian translators in translating them. from three translation of blindness novel, the sentences with marked structures were elicited and also the...

Journal: :international journal of marine science and engineering 0
a bazzi faculty of marine science, chabahar maritime university, chabahar, iran

levels of the heavy metals copper (cu), zinc (zn), lead (pb), cadmium (cd), chromium (cr), nickel (ni), iron (fe) and manganese (mn) were determined by graphite furnace atomic absorption spectrophotometer (model 67og) in coastal water, sediments and soft tissues of the saccostrea cucullata, from the intertidal zone at five stations in the gulf of chabahar on the iranian coasts along the oman se...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

this study was an attempt to investigate the effect of using c-test passages on the reading comprehension and incidental vocabulary learning of iranian intermediate efl learners. the participants were 60 male efl learners at kish mehr institute in garmsar. in fact, there were two groups, an experimental group and a comparison group with 30 students in each. the participants were pretested throu...

Journal: :محیط شناسی 0
آزاده نصرآزادانی کارشناس ارشد مهندسی کشاورزی خاک شناسی، عضو باشگاه پژوهشگران جوان دانشگاه آزاد اسلامی واحد خوراسگان آرزو طهمورث پور استادیار میکربیولوژی، دانشگاه آزاد اسلامی واحد خوراسگان مهران هودجی دانشیار خاک شناسی، دانشگاه آزاد اسلامی واحد خوراسگان

agricultural and specifically industrial activities have led to a substantial release of toxic heavy metals in the environment which can constitute a major hazard for ecosystem and human health. biosorption of heavy metals is one of the most effective technologies involved in the removal of toxic metals from contamination sites that has used in the last decade. population and microbial activity...

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