نتایج جستجو برای: elimination of toxic mercury ion

تعداد نتایج: 21197212  

Journal: :Journal of Ayub Medical College, Abbottabad : JAMC 2012
Kefi Iqbal Maria Asmat

Mercury is known to be a toxic material with adverse effects on the body as claimed by so many researchers and always projected a negative aspect of this element. It is true that it may cause a several problems when it exceeds the safe limit but along with its negative image, mercury has been playing a positive role in the field of medicine and dentistry. It has many therapeutic uses including ...

Journal: :زیست شناسی جانوری تجربی 0
کبری ایاسه دانشجوی کارشناسی ارشد محیط زیست، دانشکده منابع طبیعی و کویرشناسی رسول زمانی احمد محمودی استادیار گروه شیلات و محیط زیست، دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد فاطمه شهبازی دانشجوی کارشناسی ارشد محیط زیست، دانشکده منابع طبیعی و کویرشناسی، دانشگاه یزد حمید سودائی زاده استاد یار گروه مدیریت مناطق خشک و بیابانی، دانشکده منابع طبیعی و کویر شناسی، دانشگاه یزد

abstract studies have shown that birds due to being in the high trophic levels on the ecosystems, and also high sensitivity to toxic substances are a useful indicator for the evaluation of mercury pollution. the objective of the present study was to evaluate mercury level in the feathers of turdus philomelos and turdus merula in khanikan forests as an indicator of mercury contamination. to atta...

Journal: :international journal of environmental research 0

mercury is one of the most toxic heavy metals present in aquatic systems, exhibiting a complex behaviour in the environment, where it may persist for decades after the source of pollution is stopped. hence, it is important develop new techniques for its removal from the aquatic systems. in this context, a particularly promising line of research is the use of new materials capable of up taking m...

Abdoll Mohammad Attaran Ali Reza Sabouri Homa Shafiekhani Mahmood Payehghadr, Mohammad Kazem Rofouei,

A facile and highly efficient method have been developed for the preconcentration of the mercury content in crude oil and gasoline samples after digestion with microwave-assisted digestion. Octadecyl silica membrane disk has been modified by the recently synthesized triazene ligand, (E)-1-(2-ethoxyphenyl)-3-(4-nitrophenyl) triaz-1-ene (ENT), then the modified membrane was used for the preco...

ژورنال: سلامت کار ایران 2013
ابراهیمی, علی, شیرخانلو, حمید, فقیهی زرندی, علی, بانشی, محمد رضا , کیان, محمد جواد, گلبابایی, فریده ,

Background and aims: Sampling of toxic mercury vapors (Hg0) is necessary for determination of occupational exposure levels of workers exposed to this contaminant. Given the tendency of carbon nanotubes for mercury adsorption, carbon nanotubes can be expected to be suitable sampling media for mercury. The aim of this study was to compare the performance of multi-walled and single-walled carbon n...

Journal: :Chest 1991
B Rowens D Guerrero-Betancourt C A Gottlieb R J Boyes M S Eichenhorn

A family of four was exposed to toxic levels of mercury vapor while attempting to extract silver from mercury amalgam. All four suffered respiratory failure and subsequent death despite chelation therapy with dimercaprol. Histologic findings at autopsy were similar in all four cases demonstrating a progression of acute lung injury that appeared related to postexposure day survival. There were n...

Journal: :Ecotoxicology 2006
Jaysankar De A Sarkar N Ramaiah

Bioremediation of toxic substances includes microbe-mediated enzymatic transformation of toxicants to non-toxic, often assimilable, forms. Mercury-resistant marine bacteria are found to be very promising in dealing with mercury, and a host of other highly toxic heavy metals and xenobiotics. In the present studies we have shown that the Pseudomonas aeruginosa CH07 (NRRL B-30604) has been able to...

Journal: :international journal of environmental research 2014
m. ghadaksaz zadeh m.s. sekhavatjou a. hosseini alhashemi a. taghinia hejabi

mercury is a dangerous and an extremely toxic element, which can transfer to the food chain.presence of this element in the atmosphere particularly during the rainy seasons cause soil and environmental pollution, therefore this research will evaluate the transformation of mercury vapor from the atmosphere through precipitation into the soil. in the present study, mercury concentrations were det...

2005

Dubbed “quicksilver” by Aristotle,[1] mercury is a heavy metal with unusual physical characteristics, such as a low melting point,[2] that make it suitable for a variety of uses. It can be found in countless modern-day products, from thermometers and fluorescent light bulbs to dental fillings. Unfortunately, this unique metal is toxic to humans, and exposure can lead to neurological damage, com...

,

The mercury (II) complex, Hg (Meca2en)I2 (1), containing bidentate Schiff base ligand  Meca2en = N,N′-bis[(E)-2-benzylidenepropylidene]ethane-1,2-diamine, has been synthesized and characterized by elemental analyses (CHN) and 1H-NMR spectroscopy. The crystal structure of 1 was determined using single-crystal X-ray diffraction. Structural investigation shows that 1 crystallizes in a monoclinic s...

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