air pollution is today a major problem for modern societies. it has long been recognized as a potentially lethal form of pollution. increasing pollution levels due to rapid urbanization and growth in emission related to vehicular transportation are now caused major concern. the mobilization of heavy metals into the biosphere by human activities has become an important process in the geochemical...

background: soil and sediment serve as major reservoir for contaminants as they possess ability to bind various chemicals together. in this study the concentrations of heavy metals cd, cr and cu were analyzed in surface sediments of agh gel wetland in west of iran. methods: the sediment samples were taken from 10 stations. the samples were subjected to bulk digestion and chemical partitioning a...

Objective: Metal concentrations in 53 soil samples of Shahr-e-Babak were determined.  Methods: Assessment of enrichment factor and geo-accumulation index revealed higher degree of contamination of Cd, Pb, and Cu in soil samples. Moreover, results of metal fractionation study revealed high amount of Cd and Pb are associated in weakly bounds may lead to environmental risk of these metals.  Result...

Agriculture plays an important role in the sustainable development of country. Use chemical fertilizers escalate certain components excess quantity thereby deteriorate productivity and leads to unpredicted outcome. This study makes effort reckon accumulation some selected heavy metals [Lead (Pb), Nickel (Ni) Cadmium(Cd)] related indices [bio concentration factor(BCF) translocation factor (TF)] ...

Objective: Metal concentrations in 53 soil samples of Shahr-e-Babak were determined.  Methods: Assessment of enrichment factor and geo-accumulation index revealed higher degree of contamination of Cd, Pb, and Cu in soil samples. Moreover, results of metal fractionation study revealed high amount of Cd and Pb are associated in weakly bounds may lead to environmental risk of these metals.  Result...

Red Sea coastal development has rapidly accelerated in recent decades that led to a rise the anthropogenic heavy metal levels sediments. A total of 80 surficial sediment samples were collected from shallow waters along eastern coast near Jeddah, Saudi Arabia. These three locations, designated as North, Middle and South assess concentrations six metals: chromium (Cr), manganese (Mn), nickel (Ni)...

objective: metal concentrations in 53 soil samples of shahr-e-babak were determined.  methods: assessment of enrichment factor and geo-accumulation index revealed higher degree of contamination of cd, pb, and cu in soil samples. moreover, results of metal fractionation study revealed high amount of cd and pb are associated in weakly bounds may lead to environmental risk of these metals.  result...

Mining is an activity that involves the use of chemicals and results in unsustainable dangerous conditions for miners, their families, community surrounding ecosystem. This study was done to assess metallic contamination soils sediments Bétaré-Oya gold artisanal mine district, East-Cameroon. A total thirty (30) samples exploited soils, control were taken from mining sites Lom, Mbal Mali. The co...

To better understand heavy metal pollution and the potential ecological risk of mangrove sediments in Nanliu River estuary, speciation distribution characteristics metals Fe, Mn, Zn, Co, Ni, Cd, Cr, Cu, Pb 13 surface study area were determined analyzed using a modified four-step BCR extraction method, was assessed Geo-accumulation Index (Igeo), Potential Ecological Risk (RI), Assessment Code (R...