heavy metal contamination around the national iranian lead and zinc company (nilz) in zanjan province was evaluated in this paper. collected data were used to appraise the degree of soil contamination and also the source of pollution in the study area based on geoaccumulation index (igeo), and enrichment factor (ef). the levels of fe, zn, cd and pb in the samples exceed those reported in litera...

Plants are the most common bioindicatorsused in air quality biomonitoring studies because they are immobile and they have more sensitive to the most prevalent air pollutants than humans and animals. To identify the concentrations and sources of heavy metals in ornamental plants of Isfahan landscape, samples of leaves and soil around Pinuseldarica and Nerium oleander were collected at different ...

Rapid industrialization in the 1960s caused heavy metals such as cadmium (Cd) to severely pollute soil in Japan. The Agricultural Land Soil Pollution Prevention Law was enacted in 1970 to cope with the heavy metal pollution. Cd, in particular, has been recognized as one of the most detrimental elements in Japan because of the so-called “itai-itai” disease caused through Cd uptake. Recently, the...

this study was carried out for the purpose of investigating the issue of tailings dams as a potential source of contamination by trace elements in soils at the sidi bou othmane mine in the marrakech region, morocco. soil samples taken from depths of up to 15 cm and within a radius of 50 m from the tailings dams, were analyzed for cd, cu, pb and zn using atomic absorption spectrometry. average c...

Effects of heavy metal pollution on the enzymatic activities of soils were investigated in the Ishiagu mining area of Ebonyi State, Nigeria. Soil dehydrogenase, polyphenol oxidase, hydrogen peroxidase, alkaline and acid phosphatases and urease were measured to evaluate the effects of heavy metals mining operations on soil biochemical characteristics. Results showed that the soil pH ranged from ...

In the field of road construction with alternative materials – among which Municipal Solid Waste Incinerator (MSWI) bottom ash the preservation of groundwater and soil quality is a major environmental issue as, under the effect of rainfall infiltration through road structure, heavy metals can leach out of the material and infiltrate into the underlying road soil. The later can act as a pollutio...