in vascular plants, the soil solution is transported from the roots to the leaves through smalldiameter vessels found in the xylem; this transport not only allows the nutrient uptake but also the accumulation of heavy metals in their shoots. by analogy to this phenomenon, the present study aimed at the evaluation of heavy metals transport (pb, cr, as, cd, zn, ni and al) in ph 4 and ph 8 solutio...

in vascular plants, the soil solution is transported from the roots to the leaves through smalldiameter vessels found in the xylem; this transport not only allows the nutrient uptake but also the accumulation of heavy metals in their shoots. by analogy to this phenomenon, the present study aimed at the evaluation of heavy metals transport (pb, cr, as, cd, zn, ni and al) in ph 4 and ph 8 solutio...

Aims: to investigate and to compare the variation of the bioaccumulation of heavy metals (Cr, Cd, Fe, Mn, Pb and Zn) by two different molluscs species and also heavy metal concentration in sea water and sediment in Timsah Lake-Suez Canal. And finally to study the correlation between metal concentrations in different size classes of each molluscan species. Study Design: Levels of the heavy metal...

background and objectives: despite the increasing impact of heavy metal pollution in persian gulf due to urban growth and agricultural and petroleum activities, few studies have focused on the behavior and relationships of these pollutants in the biotic and abiotic components of aquatic environments. in this study, the amount of some metals (copper, iron, lead, cadmium, zinc and nickel) was det...

Over the last few decades, Anzali wetland has been at risk of pollutants, especially from heavy metals. The present research analyzes some physical and chemical properties and heavy metals concentration in 27 points in nine stations of Anzali wetland. The samples of each station have been mixed, acidic digested, and analyzed by inductively coupled plasma mass spectrometry (ICP-MS). The mean con...

this study examines the transport of seventeen heavy metals between the isipingo estuary andthe adjacent sea. results demonstrate variability of fluxes in terms of prevalence, concentration and seasonality.summer neap and spring tides had approximately twice the number of heavy metals compared to winter andspring seasons. spring and winter seasons yielded higher concentrations and a greater num...

background: the concentrations of heavy metals in the tissues and organs of fishes indicate the concentrations of heavy metals in water and their accumulation in food chains. in the present study, the concentrations of zn, cu, cd, ni, v and pb in three common species of fish and the potential health risks to local residents via consumption of the fishes were estimated.  methods: the concentrati...

background: the purpose of this study is to investigate the concentration of metals (lead, cadmium, chromium, copper, and nickel) in the landfill leachate and heavy metals in wells downstream of municipal solid waste landfill site in the city of mashhad. methods: in both winter and summer seasons in 2009 samples were collected from five wells that were in landfill downstream in mashhad. results...

Background: Persian Gulf is a semi-closed environment which is affected by pollution ‎from heavy metals. Entrance of heavy metals to the water column and binding to ‎sediment particles can affect the benthic organisms that can accumulate these ‎materials in their body. Noticing this ability, mussels are considered as bio-monitoring ‎agents.‎ Methods: The pearl oyster, Pinctada radiate, and sed...