نتایج جستجو برای: heavy metals in atmosphere
تعداد نتایج: 17011903 فیلتر نتایج به سال:
Chabahar Bay near Makran Sea, with the ports of transactions, has always been under the influence of annual monsoon the Indian Ocean. Density changes and heavy metals copper and zinc of Chabahar bay subtidal sediments were studied in 22 stations and three seasons that include: pre-monsoon, monsoon and post-monsoon during 2014. Polychaeta abundances mean were for premonsoon 1261.49±38.81, monso...
Heavy metals contamination of soil is a widespread global problem. One approach to reduce the accumulation of heavy metals in plants is using of different growing substrates. In order to investigate of different combinations substrate and heavy metals effect on physiological and biochemical traits in bean) cv. Sadri), an experiment was conducted. The first factor included four salt of heavy met...
background: evaluation of heavy metals as toxic pollutants in environment has a significant importance in environmental pollution studies. surficial sediments of water resources have a high potential in releasing heavy metals to the upper water environment, hence sediment analysis presents guidelines to the authorities for monitoring the environmental systems. methods: in this study, total and ...
Background and Objective: Tobacco is a rich source of heavy metals that during its growth the amount of these elements increases. The use of tobacco leaves is one of the major routes of exposure to heavy metals. The aim of this study was to determine the amount of lead, chromium, and cadmium in the samples of aromatic tobacco in the Shiraz market. Materials and Methods: This cross-sectio...
Background and Objective: Heavy metals contamination, particularly in aquatic environments, is an important concern. Since Mahbad river is the source for supplying drinking water to the city and the dam established on it is used for catching fish and sale in the market, heavy metals concentrations in the sediments of Mahabad River and the Dam, and the possible health risk of the fish consumpti...
BACKGROUNDS: Heavy metal toxicity has confirmed to be a critical threat to animals’ health. It has been proved that heavy metals can cause immunosuppression. Although, it is said that damage of immune function plays a contributing role in the increasing incidence of infectious diseases. The increasing use of rural habitats by jackals make them suitable to monitor the impact of anthropogenic on ...
introduction environment is a very great and complexity collection which has been created by a process and evolution of live existences and composer elements of ground area, and so affect the human activities and is affected from that. industrialization and modernization has let lots of heavy elements to entire into the atmosphere. elements of the atmosphere will locate on the surface of soil a...
Background and Aim: Sewage of non-metallic and mineral industrials such as tile and ceramic contain a large amount of heavy metals (e.g. Zn, Cr, Cd, Pb) and minerals which can cause problems such as contaminating underground water and polluting the environment. Thus, the present study was done to evaluate heavy metals concentration in the effluent and sludge of the tile factory in Birjand. ...
Background: Considering the toxic effects of heavy metals and microbial pathogens in industrial wastewaters, it is necessary to treat metal and microbial contaminated wastewater prior to disposal in the environment. The purpose of this study is to assess the removal of heavy metals pollution and microbial contamination from a mixture of municipal and industrial wastewater using membrane biorea...
use of electrokinetic technique for remediation of contaminated soils has recently been highly attended to, but there are still concerns regarding the effect of this process on soil microbial activity. in this study, changes in concentration of heavy metals extractable through 4n nitric acid, microbial biomass-c, and microbial coefficient, following electrokinetic remediation of a native soil c...
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