نتایج جستجو برای: changes in concentration of heavy metals extractable through 4n nitric acid
تعداد نتایج: 24548005 فیلتر نتایج به سال:
ría and coastal zone are, in particular, vulnerable to heavy metals pollution. concentrations of 10 metals in liver, muscle and kidney of the sole (solea vulgaris) from ría of vigo and its coastal zone (spain) were measured from april 2006 to february 2007 and the relationships between fish size age and metal concentrations in the tissues was investigated. concentrations of the heavy metals in...
ría and coastal zone are, in particular, vulnerable to heavy metals pollution. concentrations of 10 metals in liver, muscle and kidney of the sole (solea vulgaris) from ría of vigo and its coastal zone (spain) were measured from april 2006 to february 2007 and the relationships between fish size age and metal concentrations in the tissues was investigated. concentrations of the heavy metals in ...
Background and Objective: Heavy metal contamination of surface soils has become a serious concern. The aim of this study was to evaluate the potential risk of heavy metal (loid) pollution on human health in the surface soils of Arak industrial areas, the capital of Markazi province in western Iran. Materials and Methods: 235 surface soil samples were collected from a depth of 0-5 cm. Concentra...
The humic substances including humic acid (HA) and fulvic acids (FAs) extracted from a refuse compost were investigated the average conditional concentration quotients of the complexes formed by the reaction of heavy metals with the humic substances. The characteristics of these humic substances were previously investigated by a related study. The concentrations of the free ions of Pb, Cu, Cd, ...
The present study investigates groundwater quality in terms of heavy metals level and microbial contamination as well as the impact of bleaching powder on microbial load of groundwater samples in close proximity to a surface water body inside selected areas of Ibadan Nigeria. To do so, it collects nine water samples from three boreholes and six hand-dug wells from six locations, namely Eleyele,...
nowadays, groundwater resources play a vital role as a source of drinking water in arid and semiarid regions and forecasting of pollutants content in these resources is very important. therefore, this study aimed to compare two soft computing methods for modeling cd, pb and zn concentration in groundwater resources of asadabad plain, western iran. the relative accuracy of several soft computing...
abstract the present thesis seeks to critically read george orwell’s nineteen eighty-four and animal farm in the light of louis althusser’s thought and theory. the present thesis proceeds to examine and demonstrate althusser’s major concepts including ideological state apparatuses (isas), repressive state apparatuses (rsas), the structure, the subject, and ideological interpellation which r...
Airborne particulate matter (PM10 ) was collected from the atmosphere of the city of Isfahan. The concentration of heavy metals and anions associated with airborne particulate matter were determined using atomic absorption spectrometric and ion chromatographic techniques. A comparison was made between the variation in the concentration of PM10 and that for heavy metals and...
Background & Objectives: This paper, discussed the concentrations of heavy metals such as cadmium, copper, lead, zinc, nickel, chromium, iron, and magnesium in surface sediments of the Gulf of Chabahar. Materials & Methods: Samples of coastal sediment and shallow waters were collected from five different stations in summer and winter, 2013. Results: The research found that the concentrations of...
Contamination of soil with heavy metals has detrimental effects on ecosystems, because heavy metals accumulated in soil may persist and affect terrestrial ecosystems for a long time. Phytoremediation, as sustainable, low-cost and environmental friendly technology based on the direct use of plants for in situ remediation of contaminated soil, sludges, sediments, and ground water through contamin...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید