نتایج جستجو برای: in particular mercury
تعداد نتایج: 16994155 فیلتر نتایج به سال:
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...
Effect of Age, Gender, Years of Practice, Specialty and Number of Amalgam restorations on Mercury Concentration in Nails of dentists practicing in Tehran Dr. A. Esmaili Sari* - Gh. Zolfaghari** - S.M. Ghasempouri***- Dr. S.Sh. Shayegh****, Dr. M. Hasani Tabatabei***** * Associate Professor of Environment Dept., Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University ** M.Sc...
Since oxy-combustion is a relatively new technology, many problems associated with the behavior of coal in this novel combustion process still need to be solved. In particular, there is a lack of knowledge regarding the behavior of toxic trace elements, and there is a need to determine whether trace element distribution among the by-products and emissions to the environment, is comparable with ...
the objectives of this study are to investigate chromosomal aberrations of snakehead fish in a leachate-affected reservoir located 100 meters from a municipal landfill which compared to non-affected reservoir. three snakehead fish were collected and chromosomal aberrations were studied using kidney tissue. lead and mercury were measured in water, sediment and snakehead fish from the affected re...
Background and Objectives: The heavy metals pollution in aquatic ecosystems especially mercury, always makes concern about health of aquatic organisms. So, the purposes of this study were determination of total mercury in different tissues of the three species of the most important water birds at north of Iran and comparison with world health standards.Materials and Methods: Generally, 51 birds...
OBJECTIVES A cross sectional survey of dentists in the west of Scotland and unmatched controls was conducted to find the effect of chronic exposure to mercury on health and cognitive functioning. METHODS 180 dentists were asked to complete a questionnaire that included items on handling of amalgam, symptoms experienced, possible influences on psychomotor function, and the 12 item general heal...
Background and Objectives: The present study was designed to determine total mercury concentrations in sediment and the soft tissues of two bivalve species, Saccostrea cucullata and Callista umbonella, in coastline of Bandar Abbas in 2011. Materials and Methods: Generally, 67 bivalves and 10 sediment samples were collected from two stations (terminal of Bandar Abbas and tourism park of Soro). W...
the main objective of the present study is investigation of mercury bioaccumulation relation to length, weight, age and sex factors at liver of zander fish. for this purpose, in winter 2005 at western caspian sea shores (from jefroud fishery station to anzali wetland) 21 numbers zander fish were obtained and then after biometry (measuring length, age and weight) and sex determination, the mercu...
[no abstract available]
severe discharge of sewage and industrial effluents into the persian gulf leads to the deposition of various types of heavy metals, especially lead and mercury, in the muscles of fish. total mercury and methylmercury contents were determined in the edible parts (muscle tissue, fillet) of two different most popular frozen fish species from the persian gulf to ascertain whether the concentrations...
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