نتایج جستجو برای: absorption of lead

تعداد نتایج: 21185480  

Journal: :Cadernos de saude publica 2008
Maria de Fátima Ramos Moreira Eduardo Borba Neves

The aim of this work was to verify whether there are statistically significant correlation between the concentrations of lead in blood (Pb-B) and urine (Pb-U). Electrothermal atomic absorption spectrometry was used in the determination of lead concentration in biological material. Venous blood and spot urine were collected from workers occupationally exposed (95), adults (130) and children up t...

Steel slags are the by products of steel industries, which forms during reduction process of iron melting. The chemical composition of it changes depending to the melting procedure. Its mineralogical composition also varies based on the cooling procedure. Two different types of steel slag were used as absorbing bed for various concentrations of Pb2+ ions in the form of lead chlor...

Journal: :iranian journal of toxicology 0
sanaz pashapour pharmacology & toxicology department, pharmacy faculty, pharmaceutical sciences branch, islamic azad university, tehran, iran zahra mousavi [email protected] parisa ziarati medicinal chemistry department, pharmacy faculty, pharmaceutical sciences branch, islamic azad university, tehran, iran karim ebrahim najafabadi pharmacology & toxicology department, pharmacy faculty, shahid beheshti university of medical sciences, tehran, iran

background: cigarette butts have been shown to release numerous kinds of chemicals such as heavy metals in water and may be a continual source of aquatic environments contamination after discarding. the objective of the present study was to determine the concentration of cd and pb in cigarette filters of different iranian and non-iranian brands in smoked and non-smoked samples. methods: ten dif...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده حقوق 1389

abstract the third millennium has started, but the world is facing with serious challenges in achieving international security and peace. various human rights violations have lead the states to find means to protect human rights. also article 55 of the united nations charter introduces the respect to human rights and fundamental freedom as the most suitable ways to realize peace and security. ...

Journal: :Occupational and Environmental Medicine 1983

Journal: :British journal of industrial medicine 1966
M K Williams

a low haemoglobin but none had symptoms or signs that were likely to be due to lead absorption. A further i8 men had haemoglobins of 89% (13 g./Ioo ml.) or less. None was thought to be low due to lead absorption. The absence of symptoms, signs, and low haemoglobins in association with relatively high blood leads is unlikely to be due to errors in blood lead or haemoglobin estimation. Alternativ...

Journal: :iranian journal of pharmaceutical sciences 0
zahra ramezani jundishapur university of medical sciences, toxicology research center, ahvaz, iran jundishapur university of medical sciences, faculty of pharmacy, ahvaz, iran nasrin aghel jundishapur university of medical sciences, faculty of pharmacy, ahvaz, iran roohollah shiralipour department of chemistry, center of researches & sciences, eslamic azad university, ahvaz, iran reza zadeh dabbagh department of chemistry, center of researches & sciences, eslamic azad university, ahvaz, iran

in this study, 60 composite samples of dill and onion from two different cultivated areas in khozestan province, iran, were collected and analyzed for the presence and determination of lead and cadmium by flame atomic absorption spectrometry. samples were burned according to aoac at 450 °c, and the residue was dissolved in nitric acid. lead and cadmium contents were determined using calibration...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده علوم انسانی 1391

the present study was conducted to investigate the effect of implicit focus on form through input flooding and the effect of noticing, explicit focus on form on linguistic accuracy. to fulfill the purpose of the study, 86 iranian pre-intermediate efl learners of one of the language institutes were chosen by means of administering ket as the homogeneity test. these learners were pretested throug...

Journal: :Postgraduate Medical Journal 1975

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