نتایج جستجو برای: mercury injection

تعداد نتایج: 197989  

Abbas Esmaili- Sari , Amir Mohammad Kazemifar, Jaber Aazami , Nader Bahramifar , Seyed Mahmoud Ghasempouri,

Background: Contagion of aquatic ecosystems to heavy metals especially mercury (Hg) has risen concerns about healthiness of marine organisms. Organic mercury compounds are highly toxic for animals, and its detection in various samples is frequently needed. In present study we have described a new method for measurement of organic mercury and total mercury concentration in great cormorants (ph...

Journal: :Ecotoxicology and environmental safety 1986
E Baatrup M G Nielsen G Danscher

Juvenile rainbow trout (Salmo gairdneri) were exposed to 100 ppb mercury (as HgCl2) in the water for 14 days. Concentrations of mercury in water and fish organs were monitored using radiolabeled mercury. Tissues from kidney and liver were fixed, and sections were developed by autometallography, a method whereby accumulations of mercury sulfides and/or mercury selenides are silver amplified. In ...

Journal: :محیط زیست طبیعی 0
لیلا طیبی دانشجو امیر حسین حمیدیان دانشیار افشین دانه کار دانشیار هادی پورباقر استاذیار

the petrochemical industry is the most important and most widely active industries in the country. due to the variety and complexity of industrial products, it also produces a wild range of pollutants. mercury waste disposal from chlor-alkali units is one of the fundamental problems of this industry. various studies have shown that phytoremediation system for removal of mercury from aqueous sol...

Journal: :iranian journal of pathology 2008
amitis ramezani ali eslamifar latif gachkar zahra pournasiri mohammad banifazl

abstract background and objective: there have been concerns over possible association between mercury and neurodevelopmental outcomes in infants. in this study we aimed to determine whether blood levels of mercury are above safe values in iranian infants or not. materials and methods:  a total of 85 infants (0, 2, 4 and 6 months old) were enrolled in this study. all of them received vaccines ac...

1999
Christopher M.A. Brett Denise A. Fungaro José M. Morgado M. Helena Gil

Various polymer coatings have been investigated for the protection of mercury thin-film electrodes in the square wave anodic stripping voltammetry of environmental samples using batch injection analysis, with injection of untreated samples of volume 50 ml directly over the sensing electrode. Polymer coatings studied include those with controlled porosity, and cation-exchange polymers based on s...

Journal: :Environmental Health Perspectives 1978
M Berlin

Data on mercury and selenium interaction in the mammalian body are reviewed. Experimental data from studies on rats show that selenium interacts with mercury metabolism and toxicity after exposure to mercuric mercury. Autopsy data from workers exposed to mercury vapor indicate an association between mercury and selenium retention in the central nervous system, suggesting the formation of a merc...

Journal: :jundishapur journal of microbiology 0
nima mirzaei department of microbiology, science and research branch, islamic azad university, tehran, ir iran; department of microbiology, science and research branch, islamic azad university, tehran, ir iran. tel: +98-2188984446, fax: +98-2188957409 hilda rastegari department of microbiology, jahrom branch, islamic azad university, jahrom, ir iran mehdi kargar department of microbiology, jahrom branch, islamic azad university, jahrom, ir iran

background mercury is one of the most toxic heavy metals. even a small amount of it is toxic for all living organisms. some of bacteria have developed special resistance mechanisms against mercury, in addition to resistant to different antibiotics. these bacteria usually acquire hg and antibiotic resistance genes via horizontal gene transfer in their habitat. objectives the aim of this study wa...

Journal: :iranian journal of child neurology 0
m. sharifian md associate professor of pediatric nephrology, shahid beheshti of medical university m. noorisafa md assistant professor, shahid beheshti university m. kiahosseini md general practitioner

objective mercury poisoning is one of the important recent causes of mortality and mortality in children worldwide, particularly in industrial environments; mercury is a poisonous metal, especially harmful to the nervous and immune systems and the kidneys and can even be fatal. elemental mercury is present in thermometers, barometer batteries, sphygmomanometers and latex paints. inorganic mercu...

Journal: :The Tohoku journal of experimental medicine 2002
Minoru Yoshida

Mercury vapor is known penetrate the placental barrier more easily than inorganic mercury. A relative amount of mercury accumulates in the fetus after exposure of pregnant animals to mercury vapor. Mercury concentration in fetal organs is much lower than that in maternal organs except the liver, and fetal liver shows significantly higher mercury concentrations than maternal liver. In fetal live...

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