نتایج جستجو برای: mercury concentration was measured in each sample by using atomic absorption tool

تعداد نتایج: 18714704  

Journal: :بهره برداری و پرورش آبزیان 0
صادق صمصام پور پارک علم وفناوری هرمزگان عبدالواحد رحمانی دانشگاه هرمزگان احسان کامرانی کامرانی معاونت پژوهشی دانشگاه هرمزگان اسما گلمرادی زاده دانشگاه جیرفت میر مسعود سجادی معاونت مالی و اداری دانشگاه هرمزگان

this study was conducted to investigation and determine of cadmium (cd) concentration in the liver of platycephalus indicus (flathead) in minab, qeshm island and khamir port (persian gulf). moreover, the effect of season (winter and summer) and sex (male and female) on cd concentration in flathead were investigated. cd concentration sampling was done in two station (minab, qeshm island and kham...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و علوم انسانی 1391

abstract: one of the most visited & important spaces in different countries by tourist are urban areas. the old tehran which major part is located in district 12 is historical showcase of the capital, but, its hiidden cultural attraction is not used as it should be. this thesis occasionally engage in studying the efficacy of correct installation of travel guide boards in welfare & easily acc...

   The presented study investigates application of polyethylene glycol (PEG)-coated Fe3O4 nanoparticles as an magnetic nanoadsorbent for magnetic solid-phase extraction (SPE) and the selective removal of toxic heavy metals such as mercury (II) from aqueous solutions and their determination using graphite furnace atomic absorption spectrometry (GF-AAS)...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ادبیات و علوم انسانی 1389

abstract this research has been carried out with the purpose of investigating the conditions and related elements of the employment of the educational sciences graduates of hamedan province universities in 1382-1387 academic years. it has been a descriptive research of a correlation kind, and the population number has been 1180 grduates of payam- e noor universites in asad – abaad, kaboudaraha...

Journal: :محیط زیست طبیعی 0
سید مهدی حسینی کارشناسی ارشد، گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان نوراله میرغفاری دانشیار، گروه شیلات، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان نصرالله محبوبی صوفیانی دانشیار، گروه شیلات، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان لقمان خداکرمی کارشناسی ارشد، گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان

heavy metals, in particular mercury, are important for the public health due to their toxicity and endurance in the environment. in the present study, the distribution of mercury was surveyed along the coast of the caspian sea (mazandaran province). twelve stations were selected and from each station 5 samples were randomly collected followed by chemical analyses. an inverse weight-distance met...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده علوم انسانی 1389

abstract this study aimed at analyzing a corpus of emails gathered from iranian students studying in england. the corpus contained 996 emails that were investigated by employing the framework of chen (2006) to find common patterns in the discourse of these emails. another aim of the study was to find how two request acts (want statements and query preparatory) were used in the emails. the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده ادبیات، زبانهای خارجی و تاریخ 1391

the present study sought to examine whether a task-based approach could have an impact on raising awareness of collocations. moreover, it sought to investigate the facilitative role of consciousness-raising tasks of collocations in the communicative instances of use. to this end, 68 intermediate learners of english were selected via a placement test. the participants were taught with classroom ...

Journal: :Clinical chemistry 1974
T Giovanoli-Jakubczak M R Greenwood J C Smith T W Clarkson

A new procedure for alkaline digestion of hair was used for the selectivedetermination of total and inorganic mercury by flameless atomic absorption and the determination of methylmercury by an improved gas-chromatographic procedure. The precision of the measurements by atomic absorption for total, inorganic, and organic mercury (by difference) was 1.9%, 6.5%, and 2.1%, respectively. Recoveries...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1391

phatic communion is a cultural concept which differs across cultures. according to hofstede (2001), the u.s. tends to have individualistic culture; however, asian countries tend to have collectivistic cultures. these cultures view phatic communion differently. in individualistic cultures like u.s., phatic communion reflects speakers’ socio-cultural relationships in conversations. to see whether...

Ahmad Savari, Ali Mehdinia, Homira Agah, S. Mohamad Reza Fatemi,

Monitoring of mercury in environmental samples, with its proven toxicity on the food chain, requires sensitive and accurate analytical techniques. In this study, two methods for identification and quantification of total mercury in biological and sediment samples are compared: i) dry ash preparation and subsequent established procedures for Combustion Atomic Absorption Spectrometry, (AMA 254) ...

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