نتایج جستجو برای: atomic absorption spectrophotometer

تعداد نتایج: 216525  

2016
Mozhgan Keshtkar Sina Dobaradaran Farshid Soleimani Vahid Noroozi Karbasdehi Mohammad Javad Mohammadi Roghayeh Mirahmadi Fatemeh Faraji Ghasemi

In this data article, we determined the concentration levels of heavy metals including Pb, Co, Cd, Mn, Mg, Fe and Cu as well as selected anions including [Formula: see text] , [Formula: see text], [Formula: see text] and [Formula: see text] in the most used and popular herbal distillates in Iran. It is well known that heavy metals may pose a serious health hazard due to their bioaccumulation th...

2014
Sanjib Bhattacharya Kishan Pal Singh Pradeep Sharma

The present study was carried out to quantitatively analyze the levels of six potentially toxic heavy metals viz., arsenic (As), lead (Pb), cadmium (Cd), mercury (Hg), chromium (Cr) and nickel (Ni) in ten important Indian medicinal plants. The air dried powdered plant materials were subjected to microwave assisted wet digestion for the preparation of test samples. The samples were analyzed by u...

2012
DHANANJAY DWIVEDI

The adsorption technique using chemically treated powder of bark of Acacia arabica was applied for the removal of toxic heavy metals from polluted waste water. The extent of adsorption found to be dependent on the pH and the time of contact. The adsorbent is effective for the quantitative removal of various toxic metals from the contaminated aqueous sample. The method is quite feasible, economi...

Journal: :The international journal of occupational and environmental medicine 2011
R A Mandour Y A Azab

Fifty-four drinking groundwater samples were collected in April 2010 from some districts of the Dakahlyia governorate, Egypt. The water samples were analyzed by atomic absorption spectrophotometer for iron, manganese, lead, nickel, chromium, zinc, copper, cobalt and cadmium concentrations. All samples but two were found suitable for drinking; from the water sample from Aga district showed sligh...

Journal: :The British journal of ophthalmology 1975
Y Yassur H Zauberman M Zidon

The reliability of aqueous analysis by the atomic absorption spectrophotometer for copper ion content in samples from eyes containing intravitreal pure copper particles was investigated. It was demonstrated that values of copper ions rose well above the normal in the aqueous as well as in the vitreous of such eyes. The standard deviations of the mean values were generally high. It was also foun...

Journal: :Clinical chemistry 1988
M J Peake M Pejakovic G H White

In this evaluation of the Beckman Synchron CX3, the multi-analyte clinical chemistry analyzer exhibited high precision, good linearity, and no carryover for each of the eight analytes measured. Results obtained correlated well with those produced by our routine instrumentation (Beckman Astra, Varian atomic absorption spectrophotometer). The instrument can process up to 75 samples per hour (600 ...

Journal: :physical chemistry and electrochemistry 0
masoomeh emadi young researchers and elite club, marvdasht branch, islamic azad university, marvdasht, iran mohammad alizare zare 1young researchers and elite club, marvdasht branch, islamic azad university, marvdasht, iran omran moradlou 2department of chemistry, college of sciences, alzahra university, tehran, iran maryam iranpour department of science and research branch, islamic azad university, fars, iran

a new and simple method followed by atomic absorption spectrometry has been developedfor indirect determination of ascorbic acid (aa). the proposed method was based on the oxidationof aa to dehydroascorbic acid with cu2+cation(200mgl-1)in an ammonium thiocyanatesolution atph2.4. aa reduces cu2+to cu+followed by the precipitation of cu+ with scn-. then, the excess ofcu2+in the solution was measu...

Journal: :iranian journal of veterinary medicine 2014
hadi pourjafar reza ghasemnejad negin noori khosrow mohammadi

some heavy metals are dangerous to health and there is rising concern about the quality of foodstuffs in some parts of the world. fish, particularly tuna fish, can concentrate huge quantities of several metals from water and they even play a significant role in human nourishment. objectives: in this study, the concentrations of mercury and four trace metals in five brands of canned tuna samples...

Journal: :progress in biological sciences 2012
mohammad ali amoozegar nooshinsadat ghazanfari maryam didari

toxic heavy metals, such as lead (pb) and cadmium (cd) are widely used in industry and their accumulation in the living tissues may cause serious health problems and ecological hazards. twenty four moderately halophilic bacteria isolated from saline environments of iran were used to study their ability to bioremediation of lead and cadmium. amongst them, a gram-negative rod shaped bacterium, de...

Journal: :Urologia 2012
K P Skandhan B N Mazumdar B Sumangala

The iron content in seminal plasma of normal (n19), oligozoospermic (n11), azoospermic (n12), oligoasthenozoospermic (n19), and asthenozoospermic (n17) subjects was estimated by using atomic absorption spectrophotometer. The concentration of iron in normal seminal plasma varied from 265 to 365 mg%. The source of iron in seminal plasma seems to be the adnexal glands and not spermatozoa, as azoos...

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