نتایج جستجو برای: elimination of toxic mercury ion
تعداد نتایج: 21197212 فیلتر نتایج به سال:
3 ilver-mercury fillings—also called dental or mercury amalgams— ave been used in dentistry since 1832. In 1840, the dental ssociation of the day argued over whether to use mercury as filling material because it was cheap, or to withdraw it ecause it was toxic. The safety debate had already begun and ould be called “Amalgam War I.” In the late 1920s, Dr Alfred tock, a biochemist and researcher,...
conclusions experimental results showed that mcns is an excellent sorbent for removal of mercury ions from petrochemical waste water. in addition, highly complex matrix of this waste does not affect the adsorption capability of mcns. results an effective hg (ii) removal (99.8%) was obtained at ph 6, with 50 mg of mcns for an initial concentration of this ion in petrochemical waste water (5.63 m...
Non-toxic sandwich: By trapping mercury nanodroplets between two graphene monolayers, a new type of two-dimensional sandwich electrode is realized, which non-toxic and stable with interesting electrochemical properties.
Background and purpose: Mercury is a toxic heavy metal which causes irrevocable intense nerve-recognition disturbance to human. Excess contact to mercury causes diseases like tremor, losing sensation, decreasing vision and hearing or growth. WHO recommended the most amount of mercury absorption about 0.3 mg per week and the most concentration in water about 1µg/L. The purpose of this stud...
Mercury is one of the more toxic elements to living organisms. It is encountered at relatively low concentrations in the environment but with its amplifi cation through the food chain, the fi nal concentration in some foods can be relatively high. In addition, its toxicity is not only linked to its total concentration but is also dependent on the species. Mercury speciation in food analysis is ...
the present study is paid to the evaluation of the welfare program of the unemployment insurance in iran. the main purpose which was the main reason for performing this thesis, was the unemployment insurance plan’s challenges in iran such as financial problems of this plan, prolongation of the credit receipt for some insured people, unemployment slow exiting from the unemployment insurance fund...
The effect of selenite administered at various time intervals after mercury treatment on the toxicity and renal content of mercuric mercury in mice was studied. A marked protective effect of selenite on growth depression and renal lesions caused by mercuric chloride was observed in mice receiving mercury and selenite simultaneously. However, growth depression was not protected by post administr...
Mercury is one of the more toxic elements to living organisms. It is encountered at relatively low concentrations in the environment but with its amplification through the food chain, the final concentration in some foods can be relatively high. In addition, its toxicity is not only linked to its total concentration but is also dependent on the species. Mercury speciation in food analysis is ne...
Mercury is a very toxic element that is widely spread in the atmosphere, lithosphere, and surface water. Concentrated mercury poses serious problems to human health, as bioaccumulation of mercury within the brain and kidneys ultimately leads to neurological diseases. To control mercury pollution and reduce mercury damage to human health, sensitive determination of mercury is important. This art...
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